Building Ventilation

Energy recovery systems have become a popular way to heat and cool homes as well as commercial buildings. Energy recovery applications typically use two fans that provide air through a heat exchanger that "treats" the air by heating or cooling it before it enters the building. Buffalo Blower's plenum and forward curved fans are typically used for energy recovery applications and offer a wide range of performance and flexibility. Generator rooms require a wide range of fans to optimize the performance of generators and other equipment. Exhaust fans are used to prevent heat buildup within the generator room, while supply fans are used to provide fresh air for combustion and efficient generator performance. Room size, space limitations, and mounting capabilities will determine the exact type of fan needed for each specific application. As a leading manufacturer of air moving equipment, Buffalo Blower offers numerous fan types for meeting any generator room specification.

Rooftop exhaust fans are designed to remove heat and odors from buildings to improve air quality and occupant comfort. Areas such as cafeterias, locker rooms, office spaces, restrooms and warehouses often have unique requirements specified by local codes and utilize a wide range of rooftop exhaust fans. To accommodate these various types of environments and ventilation systems, Twin City Fan offers a complete line of products to support every rooftop exhaust application. These applications can range from clean airstreams with minimal filtration all way to high density offices and health care facilities that must comply with extremely stringent regulations. Gravity ventilators are used to equalize a building's positive or negative pressure created by other fans in the system. These ventilators provide natural ventilation and are used for intake and relief applications. Twin City Fan offers both spun aluminum and hooded ventilators, featuring a low silhouette for low roof-lines. Louvered penthouse ventilators are available when aesthetics are not an important factor and feature extruded aluminum louvers. Sidewall exhaust and supply applications require panel fans to move large volumes of air at low static pressures. Panel fans are commonly used on the walls of warehouses and manufacturing facilities to supply outside air or to remove hot or noxious gases in exhaust configurations.

Ceiling Metal Pipe Exhaust Fan

Five exclusive features of a class a motor home

If you are looking for a Recreational Vehicle (RV) that allows you to enjoy all the comforts of home on the go yet fits your budget, used Class A motor homes are a great option. While you do get RVs that come with just the basic amenities, Class A motor homes are high-end versions that offer the sophistication and convenience that you would typically not associate with motor homes. Highly maneuverable and compact in size, despite their feature-packed interiors, these Class A vehicles are easy for you to drive over long distances, too. Take a look at five exclusive features that you can expect in your pre-owned Class A motor home.

Shower and changing room:

A reasonably spacious shower lets you clean up quickly and efficiently in your used Class A motor. However, if you are also looking for some extra space and privacy while changing, many Class A's also come with a special feature — a private changing room as an extension of the shower! Now, traveling with your family and friends is easier than ever.

Driving safety:

The exteriors of top notch Class A RVs come with some very attractive features that enhance your safety on the road. Panoramic windshield improves your field of vision while the side mirror cameras ensure that you are never taken by surprise by vehicles bearing down upon you in your blind spot. If lane changes are a challenge for you when you are driving your RV, these exclusive features eliminate these troubles for sure.

Living area:

The last thing you would expect in a compact motor home is a living area where you can chill with your partner or buddies but that's exactly what you will always find in a high-end used Class A motor home. Some of these come with compact cockpit seating, complete with a stowaway table. This living-sitting area is positioned so that it takes up minimum space within the RV.

 Bthroom window mounted exhaust fan

Exhaust Fans

Exhaust fans help to force out stale air and pull fresh, clean air through your facility for a more comfortable working environment. Belt-driven exhaust fans have durable galvanized steel blades to handle large volumes of air at low static pressures, and are available in vertical roof and horizontal mount wall configurations.

They feature variable pitches and adjustable pulleys to optimize performance. Direct-drive models are available in a wide range of sizes and airflows. These medium-performance and high-performance exhaust vent fans can be found with polypropylene propellers and fiberglass frame construction for corrosion resistance.

High quality window-mounted exhaust fan, with indicator, with Italy hot switch to control the front shutter
Installation: Wall window Mounted
Material: ABS
Power (W): 20
Voltage (V): 220-240
Size: 6''
Motor: Full copper motor
Certificate: CE/CB/SASO

Auto-shutter bathroom exhaust fan

Dry Ice Blasting -- a Better Cleaning

What Is Dry Ice?

Dry ice pellets are made by taking liquid carbon dioxide (CO2) from a pressurized storage tank and expanding it at ambient pressure to produce snow. The snow is then compressed through a die to make hard pellets.

The Process

With the dry ice blasting process, dry ice (CO2) particles are propelled to supersonic speed impacting and cleaning a surface. The particles are accelerated by compressed air, just as with other blasting methods. Overall, there are three steps involved in dry ice blasting. Also, it can viewed in diagram form (see below).

Step #1 - Energy Transfer

Dry ice pellets are propelled out of the blasting gun at supersonic speed and impact the surface. The energy transfer knocks off the contaminant without abrasion. The force of this impact is the primary means of cleaning.

Step #2 - Micro-Thermal Shock

The cold temperature of the dry ice pellets hitting the contaminant creates a micro-thermal shock (caused by the dry ice temperature of -109F) between the surface contaminant and the substrate. Cracking and delamination of the contaminant occurs furthering the elimination process.

Step #3 - Gas Pressure

The final phase has the dry ice pellet explode on impact, and as the pellet warms it converts to a harmless CO2 gas, which expands rapidly underneath the contaminant surface. This forces off the contaminant from behind. The contaminant is then relocated, typically falling to the ground. Since the dry ice evaporates, only the contaminant is left for disposal.

Operating Details

To operate dry ice blasting equipment a few details need to be considered. First, though using dry ice is extremely safe, basic safety matters need to be followed including wearing hand, eye and ear protection. First, the process is noisy and ear protection should be used. Second, the temperature of dry ice is -109 degrees Fahrenheit. Gloves should always be worn when working with it. Thirdly, in dusty areas, a mask is recommended for eye and nose protection. Otherwise, wearing standard eye and ear protection would be acceptable just as with sand blasting or pressure washing. Fourthly, the gun should never be pointed at another individual or serious injury could occur.

Also, blasting in an enclosed area is safe with proper ventilation. Because CO2 is 40% heavier than air, placement of exhaust fans at or near ground level is necessary when blasting in an enclosed area. In an open shop environment, existing ventilation is sufficient to prevent undue CO2 buildup.

Window mounted copper motor round exhaust fan

Selecting the Proper Bathroom Exhaust Fan

A bathroom exhaust fan provides good ventilation, which prevents moisture and excess build-up of mold and mildew.

Bathroom ceiling fans are called intermittent ventilation and are used to capture and remove pollutants quickly at the source. The purpose is to exhaust excessive moisture or pollutants before they can spread to other parts of the house. Areas requiring this type of ventilation are bathrooms, kitchens, utility rooms, exercise rooms, workshops, garages and home offices.

Q. Where should I install the fan?

A. Typically the exhaust points should be located over or near the shower or tub and in an enclosed water closet.

Q. If mirrors stay steamed up or the grill is dripping water, is the fan(s) operating correctly?

A. You could try leaving the bathroom fan on longer to carry out more moisture, or check the design of the duct work. Poor design or damage may prevent the fan from moving the moisture out. You can insulate the ducts and check the roof jack which may be allowing rain to come into the duct, or it could be that condensation from warm, humid air in the house is striking the cold duct surface.

Q. What is a sone level

A. Sound levels are measured in sones. The higher the sone level, the noisier the fan. Buy as quiet a fan as you can afford. The way a fan is installed will affect its noise level. A low-sone fan attached to a duct that twists and turns, or is kinked or too small, will be just as noisy as the noisiest model.

Ceiling Metal Pipe Exhaust Fan

Restaurant Kitchen Exhaust Cleaning

In order to maintain high standards of cleanliness in your kitchen, it is important that the Stewarding Department regularly do kitchen exhaust cleaning. In fact, every establishment is advised to do this. This is important for public safety. You will be able to avoid possible customer complaints.

In truth, public safety is not the sole reason why you should regularly clean your kitchen exhaust. You will be able to get more insurance discounts if you clean your exhaust regularly. Lower rates on insurance coverage are definitely something you should take advantage of. When there is less insurance risk, insurance companies are willing to offer lower insurance rates. You just have to make sure that you clean your exhaust four times a year. If you show compliance to insurance requirements, there is no reason why you would not be able to enjoy discounts on your rates.

When cleaning your kitchen exhaust, you have to shut down your restaurant before you do anything else. So, it is best to schedule the cleaning on days when business is slow. It is important that you do the cleaning fast and thorough. Restaurants cannot shut down for long periods of time. This is particularly true if the restaurant is in a hotel with a lot of hungry guests.

Compact Axial Flow Fan

How to Clean Kitchen Exhaust Fan

Turn off the power at the fuse or breaker box.
Remove fan cover if it removable. Place the fan in hot water mixed with ammonia. If it is not removable, just use sponge to wipe what you can clean. Make sure to dip the sponge in hot water mixed with ammonia. Soak for 20 minute and then brush the fan. Use a sponge dipped in the same mixture for cleaning the fan blades. Use a soft-bristled brush. Use rubber gloves at all times. It is also best to do this in a well-lit area.
Place the fan on a dry cloth or newspaper. Wipe it dry and remove excess grease or dirt. Avoid getting the motor wet. Remove the filters and soak it in hot water mixed with dishwashing detergent for 15 minutes. Afterwards, rinse the filters and dry.
We will do a series on kitchen cleaning, so you can probably train your stewards on how to do this properly. Again, it is important that you clean your kitchen exhaust at least 4 times a year in order to make sure that your kitchen is safe from potential danger which can be caused by filthy exhausts.

Ceiling Metal Pipe Exhaust Fan

Selecting the Proper Bathroom Exhaust Fan

A bathroom exhaust fan provides good ventilation, which prevents moisture and excess build-up of mold and mildew.

Bathroom ceiling fans are called intermittent ventilation and are used to capture and remove pollutants quickly at the source. The purpose is to exhaust excessive moisture or pollutants before they can spread to other parts of the house. Areas requiring this type of ventilation are bathrooms, kitchens, utility rooms, exercise rooms, workshops, garages and home offices.

Q. Where should I install the fan?

A. Typically the exhaust points should be located over or near the shower or tub and in an enclosed water closet.

Q. If mirrors stay steamed up or the grill is dripping water, is the fan(s) operating correctly?

A. You could try leaving the bathroom fan on longer to carry out more moisture, or check the design of the duct work. Poor design or damage may prevent the fan from moving the moisture out. You can insulate the ducts and check the roof jack which may be allowing rain to come into the duct, or it could be that condensation from warm, humid air in the house is striking the cold duct surface.

Q. What is a sone level

A. Sound levels are measured in sones.  The higher the sone level, the noisier the fan. Buy as quiet a fan as you can afford. The way a fan is installed will affect its noise level. A low-sone fan attached to a duct that twists and turns, or is kinked or too small, will be just as noisy as the noisiest model.

 Full PP material copper motor ventilation fan

Learn How To Start A Handyman Business And Earn A Great Income

There are literally hundreds of reasons why people hire handymen but the whole point here is this.  People who do not have the skills, or do not have the time, or simply cannot do the work themselves, will gladly trade you dollars for your skills.  These people are your willing, paying customers!

Now I want to clear something up right here.  When we talk about a handyman, we usually think of men performing the work.  This is not always the case!  There are many equally talented women making a great living in the handy"person" occupation.  So do not think for a minute that this field is for men only.  Nothing could be further from the truth.
What skills do you need to start a handyman business?

To be a good handyman, you do not need to have skills in every type of repair work.  You will not be building a house by yourself and you probably will not be performing full-blown home renovations.  What you want to focus on providing the best possible service with the skills you already have.  Of course, you can always learn other types of repair work, if you want to.

But focusing on a couple of specific niche areas can be very, very lucrative.  Carpentry, simple plumbing and electrical work are the Big Three of handyman work.  Don't let the electrical stuff scare you.  These services can include simple stuff like changing light fixtures, installing ceiling and exhaust fans, replacing outlets and switches.  Most, if not all, of these components come with complete installation instructions.

Avoid trying to be "all things to all people".  Focus on being very efficient and quality oriented at those services you do provide and you should make out just fine.

Ok… Let's move on.

Besides skills, of course, what do you need to start a handyman business?  No, you do not need to start out with a big white panel van.  This is especially true if you narrow your services (in the beginning) to things like minor plumbing and electrical work.  Your car trunk will be more than adequate to carry all the tools and parts you need to perform this type of work.

Here are a few tool tips:

Buy the best tools you can afford.  Good tools make the work easier and they definitely last longer than the cheaper grades.
It is always wise to have both a corded and a cordless drill with you at all times.  Some jobs just don't lend themselves to using a drill with a cord, but… a dead battery charger for you cordless drill will cost you time.  Yes, time is money and you don't want to be running home or to your shop to get more tools.
Invest in an array of flat-bladed and Phillips screwdrivers.  Also get a set of the smaller jeweler type screwdrivers.  Other small tools you should carry with you at all times are slip-joint pliers, channel lock pliers, vise grips, flashlight, trouble light, hammer, utility knife & blades, hacksaw, pry bar and a voltmeter (if you are doing electrical work).
Buy an assorted machine screw and nut kit.  These kits contain all of the most commonly used screw sizes and they will come in really handy for many jobs.  These kits are available at Lowes, Home Depot , hardware stores and even Ebay.
You should also carry a roll of black electrical tape, masking tape and McGyver (duct) tape with you at all times.  You will use one of the just about every day.
Bring your own black plastic trash bags, a bucket, sponge, rags, plastic sheeting and a shop vacuum to every job.  Thoroughly cleaning up after yourself is a definite sign of quality workmanship and your customers will be quite pleased with the care you show for their home.
What about advertising your new handyman business?

Ultra-thin window mounted ventilation fan

The Difference Between Charcoal, Gas and Electric Barbecue Grills

There are two alternatives to charcoal fired barbecue grills are those that are heated by either gas or electricity. These barbecue grills are available in all sorts of shapes and sizes from compact countertop type bbq grills to bigger free standing grills that are suitable for balconies or patios.
Probably the most obvious benefits of using a gas or electric grill is you don't have to light any fires or clean up any ash after wards. Also, there is less time to wait for pre-heating the grill or griddle then a charcoal grill.

Electric grills are the most popular indoors grills because they are easy to setup and use. And you all able to use them when due to hire fire danger season when open barbecue grills are not permitted.
Indoors, permanently installed gas or electric units are often located near range tops so that they can share the existing overhead exhaust fan. Some barbecues have their own, though.

Gas grills are simple to use and are very convenient because they can be ready at a moments notice. Volcanic rock is usually spread out below the grill and is heated by gas burners to give the food an authentic barbecue flavor. Rotisserie cooking is also an option for most of the larger gas grills. Most gas grills have cooking surfaces that are normally half open grill for direct open flame cooking and the other half a griddle.

You may want to include a grill basket for holding and turning fish and smaller meat cuts and vegetables, packages of aluminum pans in different sizes to use as drip pans under large roasts and when rotisserie food, a meat thermometer and a roast holder is a must for cooking roast, turkeys lamb or vegetables.

If in case you have a fat fire and your gas grill is a natural gas type, shut off the supply at the mains, put out any open flame. if the smell continues, without delay phone your gas supplier or fire department.

 Compact Axial Flow Fan

Silo Waterproofing

Silos are storage structures of agricultural products such as grain and wheat. It is necessary that silos are waterproof because grain and wheat would be useless if they become wet in storage due to rains or storms. It is therefore important that silo waterproofing must be done in all existing silos.

The silo waterproofing process for grain storage is divided into two parts. The first part is the structural upgrade while the second is the actual waterproofing process.

Before a silo can be made waterproof, the structure itself should be assessed first. Most grain silos are not equipped with the mechanism to control the atmospheric conditions inside the storage, so modifications will be done before the actual silo waterproofing process begins. The structural upgrade begins with the repair of existing damages within the structure, such as the covering of holes and other openings. The silos will also be strengthened. Then, silo features such as doors, exhaust fans, conveyor belts and ventilators will be altered to prevent leakage from those areas. Structural upgrade also includes the following: fitting of internal pressure controls; the installation or modification of a fumigation system; the upgrade and improvement of lighting, safety and maintenance devices. It is during the assessment of the silo that the extent of the waterproofing work will be determined.

The process of silo waterproofing begins with the filling out of large gaps and voids, specially the parts between the roof and walls. The next part is the application of a membrane seal over smaller holes and joints. Afterward, there will be the sealing of wall and floor surfaces. Then, there will be an application of the heat reflective coating on exterior surfaces. The last procedure of silo waterproofing is the sealing of the doors and other openings that are essential with loading and maintenance operations.

Full ABS material copper motor ventilation fan

Lowering Your Home's Humidity Can Drastically Lower Your Air Conditioning Cost

The muggy summer heat can make air conditioning a very welcome treat but you could get burned once you see your next electric bill. Living comfortably inside an air conditioned house has its own downside

- an increased monthly electrical consumption. You can decrease your air conditioner's work load - as well as your monthly power bill - by lowering the humidity level in your home which your air conditioner would otherwise do. The air conditioner's two-way cooling process An air conditioning unit delivers comfortably cool air in your home through two processes:

- By lowering the air temperature - By taking out humidity from the air inside your home. Cold air cannot tolerate high humidity levels, unlike warm air. Humidity of 30 to 50% level in the air makes it feel more refreshing. During the hot summer months, the air inside your house can carry humidity level of 80% or higher.

- Always keep your doors and windows shut, especially on sweltering hot weather. Keep going in and out of the room at a minimum because humidity comes every time a door is opened. - Install exhaust fans in "moist" areas of your house like the bathroom, laundry room and kitchen. They will blow humid air outside your home and thus free the air conditioner from doing the job.

- Go outside and check if any water from outdoor is making its way in through your walls. Also ensure that drainpipes and downspouts are directing water away from your house.

- Cook according to the weather you're having. On hot days, don't raise the temperature inside your house further by boiling water in the kitchen.

- Take your houseplants out during the summer to decrease the humidity in your home.

Ultra-thin window mounted ventilation fan

The Basics of Hazmat Incident Management

Whether at home or work, there is a chance you could be impacted by a hazardous materials incident (such as a chemical spill, train derailment, or industrial explosion). It is important that you think ahead and know what to do to ensure safety. If you are at work, chances are your employer will have a detailed emergency action plan and information for you to follow. But, if you are not at work - or even if you are, the more you know, the better - it is vital you are educated on what to do in such an emergency.

You should add the following supplies to your disaster kit:

Plastic sheeting
Duct tape
Scissors

During an incident:
Listen to local radio or television stations for detailed information and instructions. Follow the instructions carefully. You should stay away from the area to minimize the risk of contamination. Remember that some toxic chemicals are odorless.

If you are asked to evacuate:

Do so immediately.
Stay tuned to a radio or television for information on evacuation routes, temporary shelters, and procedures.
Follow the routes recommended by the authorities - shortcuts may not be safe. Leave at once.
If you have time, minimize contamination in the house by closing all windows, shutting all vents, and turning off attic fans.
Take pre-assembled disaster supplies.
Remember to help your neighbors who may require special assistance - infants, elderly people, and people with disabilities.

If you are caught outside:

Stay upstream, uphill, and upwind! In general, try to go at least one-half mile (usually 8-10 city blocks) from the danger area. Move away from the accident scene and help keep others away.
Do not walk into or touch any spilled liquids, airborne mists, or condensed solid chemical deposits. Try not to inhale gases, fumes, and smoke. If possible, cover mouth with a cloth while leaving the area.

Stay away from accident victims until the hazardous material has been identified.
If you are in a motor vehicle
Stop and seek shelter in a permanent building. If you must remain in your car, keep car windows and vents closed and shut off the air conditioner and heater.
If you are requested to stay indoors
Bring pets inside.
Close and lock all exterior doors and windows. Close all vents, fireplace dampers, and as many interior doors as possible.
Turn off air conditioners and ventilation systems. In large buildings, set ventilation systems to 100 percent re-circulation so that no outside air is drawn into the building. If this is not possible, ventilation systems should be turned off.
Go into the pre-selected shelter room. This room should be above ground and have the fewest openings to the outside.
Seal gaps under doorways and windows with wet towels or plastic sheeting and duct tape.
Seal gaps around window and air conditioning units, bathroom and kitchen exhaust fans, and stove and dryer vents with duct tape and plastic sheeting, wax paper, or aluminum wrap.
Use material to fill cracks and holes in the room, such as those around pipes.
If gas or vapors could have entered the building, take shallow breaths through a cloth or a towel. Avoid eating or drinking any food or water that may be contaminated.
After an incident
Return home only when authorities say it is safe. Open windows and vents and turn on fans to provide ventilation.
Act quickly if you have come in contact with or have been exposed to hazardous chemicals.

Ultra-thin window mounted ventilation fan

Heat Guns – More Than Just Safely Removing Paint

Uses Of Heat Guns

Apart from removing paints, heat guns are often used in home and workshops for various other purposes. A few among them are mentioned below:

1. You can buy heat gun online for removing old floor tiles, bumper stickers, decals and several other materials that are fixed with glue.

2. Floor tiles are fragile when cold and can break down when cut to fit into clenched places such as around pipes or molding. Heating the tile with a heat gun makes the process of cutting much easier and more precise.

3. Heat gun is often used to soften the putty around doors and windows. This makes the compound easier to scrape off.

4. To thaw frozen pipes, buy a heat gun, easily available online, as it is much safer than a torch with an open flame. Be careful on soldered joints as the gun can heat the solder if held in place for too long.

How To Use a Heat Gun?

Heat gun is known to remove paint quickly, thereby creating less of a mess than a chemical remover. The gun can work both on latex or oil-base finishes. However, it cannot remove a stain that has soaked into wood.

Install the nozzle before turning the heat gun on. Generally, there are two types of nozzles - one with wide-flare used for most paint-removing jobs, and the round nozzle that works great where heat must be more localized. It is up to you to determine which nozzle is best for a particular job. However, if you need to change nozzles later, cool it for at least five minutes before removing the hot nozzle.

It is necessary to heat only a few square inches at a time and scrape the softened paint off immediately. Prevent the use of nozzle in one place for too long. This will char the paint and wood.

Safety Tips

Once you buy a heat gun online and start using it, you must be aware about the safety precautions you need to follow.

1. You must wear a respirator mask to protect yourself from fumes of the paint.

2. While using this tool, it is necessary to work in a well-ventilated area. That said, opening a window must not be the only option. Either work outdoors or turn on your exhaust fans.

3. Wear a separate set of work clothes and make sure they cover your arms and legs. Be extra cautious by wearing gloves and safety goggles.

4. Heat guns reach high temperature sometimes. Stick to the handle and don't touch the airflow of the tool or the barrel.

5. If you are using an extension cord, make sure it is a heavy duty cord that can carry the load.

6. It is vital to remove paint that has stuck into the nozzle, or else it may create a fire hazard.

Whether you are a professional or have started using this efficient tool from some time now, following the above mentioned safety tips will ensure that neither your work nor productivity gets hampered.

Full PP material window mounted exhaust fan

Avoiding Seasonal Allergies All Year Long

There are several different things that can bring annoying and at times unbearable allergy symptoms. To avoid allergens first you have to identify the culprit. When trying to identify the cause of allergy symptoms the most commonly known allergens are looked at first. Identifying the cause of your allergies can make it possible to remove them and enjoy an allergy symptom free life. In this article we will be looking at common causes of allergies and how to avoid them in your home.

Seasonal allergies are commonly a problem in spring, although they can also happen at other times of the year. This is because of the time that plants are pollinating. If you have seasonal allergies in the spring you are most likely allergic to the pollen in the air. Allergy problems in the fall can be due to the decomposition of leaves and other plants. The process can have an increase of mold spores as the last of the moisture in these leaves causes a breakdown.

Dead plants, trees and fallen branches are also commonly ignored allergens. When thinking of items that might cause allergies most people don't give proper credit to the decomposition process as being the allergen producing process that it is. Remove these when they fall, or when they first die, to reduce the amount of mold that is growing around your home since mold causes an increase in allergy symptoms.

Wiping the window daily to remove moisture and cleaning the window track with vinegar or chlorine bleach can reduce allergens in the air by killing the mold and mildew. This condensation can also happen around the faucets and near exhaust fans. Wiping these areas with a solution of water and either chlorine bleach or water and vinegar can keep mildew under control. Using dehumidifiers to keep the humidity down can be helpful when trying to control mold growth as well.

Allergy symptoms are annoying. Once you identify the cause of your seasonal allergies you can avoid them. Cold weather usually increases the symptoms of seasonal allergies. If you remove one possible allergen and your allergy symptoms do not change you need to keep looking for the trigger. By removing one possible allergen at a time you will be able to identify the cause of your allergy symptoms.

Ultra-thin window mounted ventilation fan

Selecting the Proper Bathroom Exhaust Fan

Bathroom ceiling fans are called intermittent ventilation and are used to capture and remove pollutants quickly at the source. The purpose is to exhaust excessive moisture or pollutants before they can spread to other parts of the house. Areas requiring this type of ventilation are bathrooms, kitchens, utility rooms, exercise rooms, workshops, garages and home offices.

Q. What size bathroom exhaust fan will I need?

A. For bathrooms up to 100 square feet in area, it is recommended that an exhaust fan provide 1 cfm per square foot at approximately eight air changes per hour. For proper ventilation, the fan should be left on for around 20 minutes after usage; you may want to install an automatic timer.

For an 8'x5' room with an 8' ceiling = 40 sq ft, you will need a fan rated at 40cfm. For larger bathrooms install a 150cfm fan so that the air can be pulled through the entire room and exhausted at a central location. Or, you can install multi fans; one over the toilet, in the shower, and over the tub. This second method is very effective and provides ventilation where and when it's needed, but both methods work well.

Q. Where should I install the fan?

A. Typically the exhaust points should be located over or near the shower or tub and in an enclosed water closet.

Q. If mirrors stay steamed up or the grill is dripping water, is the fan(s) operating correctly?

A. You could try leaving the bathroom fan on longer to carry out more moisture, or check the design of the duct work. Poor design or damage may prevent the fan from moving the moisture out. You can insulate the ducts and check the roof jack which may be allowing rain to come into the duct, or it could be that condensation from warm, humid air in the house is striking the cold duct surface.

Ultra-thin window mounted ventilation fan

Exhaust Fan at Your Home

Healthy and comfortable home is not only determined by the quality of its cleaning and lighting but also the air circulation. In order for air distribution went well, the room must be supported by a good ventilation system.

But  sometimes is not enough ventilation, therefore, needed a simple tool known as Exhaust Fan
This tool serves to suck the hot air inside the room and throw it out and at the same time sucking fresh outdoor air into the room. Another function is to regulate the volume of exhaust fan air be circulated in the room. To be healthy every room air circulation needs differ according to function.

Turnover air space needed depends on the function of the measured air change per hour. In the bedroom, for example, 2 / 3 volume of space should be replaced with new air every hour. When the vast room 3 x 4 x 3 = 36 m, meaning it requires a change of room air 24 m2/jam.
the presence of exhaust fan is an artificial attempt to optimize changing the air in the room .
TYPES OF EXHAUST FAN
Based on the exhaust fan assembly divided by 3 is: WALL MOUNT, WINDOW MOUNT, CEILING MOUNT.
WALL MOUNTED, mounted on a wall at the back of the wall must deal directly with outside air to exhaust air.
WINDOW MOUNT,  mounted on a glass window (thickness 3-7 mm). When installed in the room in one big room, make sure there is access out into the air in the huge room.

Auto-shutter bathroom exhaust fan

How Paint Spray Booths Work

A spray booth is quite simply a pressure controlled environment which is used to spray paint vehicles in a bodyshop, anything from a family car through to a fighter jet has been sprayed in a spray booth. To ensure the ideal spray booth working conditions which are temperature, air flow and humidity, the environment is equipped with extremely efficient ventilation, made up of at least one or more motors and a couple of burners to heat the air that is blown through.

One of the most fundamental components of the Spray Booth is a good supply of air. Spray Booths require a fair amount of air to be pumped in so as to have a good air supply through the booth. The National Fire Protection Association requires a minimum of 100 feet per minute of air flow past the operator of the spray booth. For the majority of spray booths this essentially means you require a volume source of air somewhere in the region of 8,000 to 10,000 cubic feet of airflow per minute which is typically more air than most buildings can naturally supply.


It is advisable to avoid cheaper filters or fit a filter that doesn't fit properly within its frame as the overspray will not be captured properly and will lead to a build up in the exhaust and on the fan stack, this is a potential fire hazard due to a phenomenon called composting.

The exhaust is the third and final important part of the spray booth setup.  The National Fire Protection Association requires a sturdy steel exhaust chamber with steel filter holding frames as a bare minimum. The size of the exhaust fan which is measured in CFM, is determined by the air required to produce 100 FPM air flow throughout the booth. The CFM measure gives the size of the fan required for a balanced operation of the spray booth.

It is advisable to have the fan mounted high in the exhaust stack and not directly against the exhaust chamber, doing this allows for quieter operation of the fan.

Plastic Ceiling Exhaust Fan

How to Improve Your Bathroom's Ventilation

If your current bathroom doesn't seem to offer you the right amount of ventilation, you can take certain steps to increase air flow and improve your bathroom environment. Blair Harris is the director of Sales and Marketing at A&R Mechanical Services, a Plumbing, Heating and Air Conditioning company that has been serving Amarillo, Texas since 1992, and she thinks that anyone with poor bathroom ventilation ought to try the following in order to combat the problem:

Using an Exhaust Fan

When it comes to improving bathroom ventilation, the use of a fan is truly key. If your bathroom comes equipped with a built-in exhaust fan, don't wait until after you've emerged from the shower to turn it on. Instead, make a habit of running your bathroom fan while you shower so that it can combat all of that added moisture in the air and help keep the atmosphere as cool as possible. If you don't have an exhaust fan in your bathroom, bring in a local plumbing and HVAC company to see if installing one is an option.

Installing a Bathroom Window

You may add a window on one of your bathroom's exterior walls. Not only can a window improve your bathroom's appearance, it can also help tremendously on the ventilation front. If you're not keen on the idea of having a permanent draft in your bathroom, keep in mind that just because you choose to install a bathroom window doesn't mean that you'll always have to leave it wide open. By cracking the window for even a few minutes, you can introduce a stream of fresh air into your bathroom and make it more comfortable in the process.

Cleaning Your Vents
If your bathroom air doesn't seem to be circulating well, clogged or dirty air vents could be to blame. To remedy this, try giving your vents a thorough cleaning. If you're not sure how to tackle the task yourself, hire a local air duct cleaning company to do the job for you. You might be surprised at what a difference a single vent cleaning makes.

Your bathroom is one of those places that you just can't avoid, so you should do what it takes to make it as comfortable as possible. If the air flow in your bathroom isn't what you'd like it to be, contact an experienced plumbing and HVAC company to learn about your options for improving the situation.

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Seasoning a Wok With Ease

7. Reduce the heat to low volume and let it sit for about 15 minutes for it to absorb the oil. Color changes will continue in time, especially with frequent usage.

8. Turn off the heat and allow cooling down onto room temperature before you start the next round of seasoning. Wipe out excess oils with a paper towel when it cools. Do not use cold water when cooling the wok. It can damage and undo the process. Hence, cool the wok with boiling or very hot water. Wipe it with a sponge.

9. Dry the wok thoroughly and store.

10. Repeat the process for about 3 to 4 times more. A beautiful black sheen will happen with proper usage.

Another method is to brush the wok with polyunsaturated cooking oil on the surface and place it in an oven. This will take about four hours at 150 degrees Celsius. Every hour, brush the wok with oil around the sides and continue heating. Woks with plastic and wooden handles are not advisable to put inside an oven.

For continuous care
Do not scrub off the protective layer of carbon on the surface of the wok. Scouring pads and detergent soaps are the worst enemies of a seasoned wok. It is best to wash it with hot water and clean the surface with bamboo brush. Dry this with paper towels and lightly put vegetable oil coating before storing.

The bottom part of the wok can be scoured with steel wool so as to take away the burnt materials or residue. If there is an accidental burning of food inside the wok, scour it out and re-season the wok again.

Woks that are new may cause a slight metallic taste onto the first two or three dishes. The metallic taste disappears after several usages. A wok with proper seasoning can make perfect omelets without sticking. For better results, the process of seasoning a wok should be done with patience.

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Seasoning a Wok With Ease

Seasoning a wok is the best way to prepare for convenient and conventional cooking. It is more of an art and less of an earthly task.

Woks are prone to rust and buildups of sticky foods, especially if not seasoned properly before usage. Seasoning a wok permits the food to glide smoothly over its surface. Iron and steel woks should be seasoned properly before use.

Stainless steel types need to be treated because they are less porous than iron. Corn and peanut oil are also ideal cooking oils for seasoning because they possess a high heating point. Some even prefer to season woks with the use of an oven.


To start the process, two methods for seasoning are used. The first method is to season a new one or to re-season an old and rusty wok. Below are steps you can follow:

1. Scrub thoroughly the inside and outside surfaces using soap and a steel wool scouring pad. It will remove the new wok's manufacturer's protective coating or even rust on an old wok. The initial coating of a wok prevents rusting during retail display.

2. Rinse with water.

3. For some coatings that are hard to remove, place the wok on a stove with water. Boil until the protective coating dissolves. Pour the water out and scrub with soap and steel wool.

4. Next, heat the wok over high heat until the edges are nice and hot. It will change from a shiny steel gray to blue, then purple to red. Then it will turn into black.

5. Smoke will appear. Turn on the ventilation fan.

6. Using a brush or a sheet of wadded-up paper towel, dip it into corn oil and coat the inside surface with a thin layer of oil. You can tilt the oil in all directions. This can make the surface shine upon each application.

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Exhaust Fan Timers Provide A Simple Way to Save Energy

After a long day, sometimes there is nothing better than a good shower, right? Afterwards, you turn on the exhaust fan to prevent moisture. An hour later, you've made something to eat, watched an episode of Glee, and called your friend to chat about it. You hear a faint humming, but can't quite place it. A ha! That bathroom fan is still on, both exhausting air and increasing energy bills. Instead of beating yourself up about it, install exhaust fan timers to eliminate this problem while also reducing energy use.

Enough is enough, and too much is a waste

So, exactly how much is enough? Following a shower or bath, the exhaust fan should be left on no longer than 20 minutes. In this time, the fan is able to exhaust out moisture to prevent mold and the build-up of condensation. Keeping the fan on for less than this can result in the condensation problems that exasperate respiratory-related health issues such as asthma.

Choosing the right timer

Exhaust fan timers come in both mechanical and digital models. A mechanical timer operates the same way in which a classic oven-timer works, with the wind-up mechanism. These typically cost less than the digital timers, and can be set by the minute. Digital timers allow you to choose the operation settings with the push of a button. This type of exhaust fan timer does not allow for minute operation, but can only be set based on five or ten minute intervals.

Time for installation

Saving energy at home is actually much simpler than it may at times appear. The use of exhaust fan timers is a great example of this. By simply setting the timer, you are promoting healthy indoor air quality at home, reducing energy use and costs, and eliminating that horrible feeling of forgetfulness all at the same time.

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Building Ventilation

Energy recovery systems have become a popular way to heat and cool homes as well as commercial buildings. Energy recovery applications typically use two fans that provide air through a heat exchanger that "treats" the air by heating or cooling it before it enters the building. Buffalo Blower's plenum and forward curved fans are typically used for energy recovery applications and offer a wide range of performance and flexibility. Generator rooms require a wide range of fans to optimize the performance of generators and other equipment. Exhaust fans are used to prevent heat buildup within the generator room, while supply fans are used to provide fresh air for combustion and efficient generator performance. Room size, space limitations, and mounting capabilities will determine the exact type of fan needed for each specific application. As a leading manufacturer of air moving equipment, Buffalo Blower offers numerous fan types for meeting any generator room specification.

Rooftop exhaust fans are designed to remove heat and odors from buildings to improve air quality and occupant comfort. Areas such as cafeterias, locker rooms, office spaces, restrooms and warehouses often have unique requirements specified by local codes and utilize a wide range of rooftop exhaust fans. To accommodate these various types of environments and ventilation systems, Twin City Fan offers a complete line of products to support every rooftop exhaust application. These applications can range from clean airstreams with minimal filtration all way to high density offices and health care facilities that must comply with extremely stringent regulations. Gravity ventilators are used to equalize a building's positive or negative pressure created by other fans in the system. These ventilators provide natural ventilation and are used for intake and relief applications. Twin City Fan offers both spun aluminum and hooded ventilators, featuring a low silhouette for low roof-lines. Louvered penthouse ventilators are available when aesthetics are not an important factor and feature extruded aluminum louvers. Sidewall exhaust and supply applications require panel fans to move large volumes of air at low static pressures. Panel fans are commonly used on the walls of warehouses and manufacturing facilities to supply outside air or to remove hot or noxious gases in exhaust configurations.  Other typical applications include removing carbon dioxide from produce storage facilities, greenhouse ventilation, and parking garages. Panel fans can be mounted directly to the wall panel, which is especially useful when ductwork is unnecessary. Each fan can be customized to the individual needs of the customer, including aluminum or stainless steel construction, explosion proof motors, gravity or motorized dampers, corrosion resistant coatings, and fully reversible propellers.

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Restaurant Kitchen Exhaust Cleaning,

When cleaning your kitchen exhaust, you have to shut down your restaurant before you do anything else. So, it is best to schedule the cleaning on days when business is slow. It is important that you do the cleaning fast and thorough. Restaurants cannot shut down for long periods of time. This is particularly true if the restaurant is in a hotel with a lot of hungry guests.


How to Clean Kitchen Exhaust Fan

Turn off the power at the fuse or breaker box.
Remove fan cover if it removable. Place the fan in hot water mixed with ammonia. If it is not removable, just use sponge to wipe what you can clean. Make sure to dip the sponge in hot water mixed with ammonia. Soak for 20 minute and then brush the fan. Use a sponge dipped in the same mixture for cleaning the fan blades. Use a soft-bristled brush. Use rubber gloves at all times. It is also best to do this in a well-lit area.
Place the fan on a dry cloth or newspaper. Wipe it dry and remove excess grease or dirt. Avoid getting the motor wet. Remove the filters and soak it in hot water mixed with dishwashing detergent for 15 minutes. Afterwards, rinse the filters and dry.
We will do a series on kitchen cleaning, so you can probably train your stewards on how to do this properly. Again, it is important that you clean your kitchen exhaust at least 4 times a year in order to make sure that your kitchen is safe from potential danger which can be caused by filthy exhausts.

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Exhaust Fan at Your Home

Healthy and comfortable home is not only determined by the quality of its cleaning and lighting but also the air circulation. In order for air distribution went well, the room must be supported by a good ventilation system.

But  sometimes is not enough ventilation, therefore, needed a simple tool known as Exhaust Fan

Turnover air space needed depends on the function of the measured air change per hour. In the bedroom, for example, 2 / 3 volume of space should be replaced with new air every hour. When the vast room 3 x 4 x 3 = 36 m, meaning it requires a change of room air 24 m2/jam.
the presence of exhaust fan is an artificial attempt to optimize changing the air in the room .

HOW DOES EXHAUST FAN WORK
• Exhaust Fan will function on the mode of ‘exhaust' or suck, not mode ‘fan' as ordinary fan.
• When enabled, Exhaust Fan Exhaust Fan will suck air from the room and throw it out of the room.
• The air is sucked and wasted air ‘dirty' which had previously been in the room.
• With exploited and outcast of volume / amount of dirty air in the room will be reduced.
• Each time the air (dirty) air sucked out of the net from outside the room will go into the room through the ventilation holes, and so on, it is possible because when the air is sucked out of the PRESSURE AIR TOTAL in the room becomes smaller than the air pressure outside room, so the room will get a supply of air from outdoors.
• This will continue over and over during the EF in the ON state. Thus, the air inside the room will feel more refreshed and cool of course, because the volume of dirty air is always sucked out and replaced with clean air at all times.


Because clean air circulation associated with family health, so the installation of exhaust fans at home is a wise choice. Good Luck…

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Five exclusive features of a class a motor home

If you are looking for a Recreational Vehicle (RV) that allows you to enjoy all the comforts of home on the go yet fits your budget, used Class A motor homes are a great option. While you do get RVs that come with just the basic amenities, Class A motor homes are high-end versions that offer the sophistication and convenience that you would typically not associate with motor homes. Highly maneuverable and compact in size, despite their feature-packed interiors, these Class A vehicles are easy for you to drive over long distances, too. Take a look at five exclusive features that you can expect in your pre-owned Class A motor home.

Shower and changing room:

A reasonably spacious shower lets you clean up quickly and efficiently in your used Class A motor. However, if you are also looking for some extra space and privacy while changing, many Class A's also come with a special feature — a private changing room as an extension of the shower! Now, traveling with your family and friends is easier than ever.

Driving safety:

The exteriors of top notch Class A RVs come with some very attractive features that enhance your safety on the road. Panoramic windshield improves your field of vision while the side mirror cameras ensure that you are never taken by surprise by vehicles bearing down upon you in your blind spot. If lane changes are a challenge for you when you are driving your RV, these exclusive features eliminate these troubles for sure.

Living area:

The last thing you would expect in a compact motor home is a living area where you can chill with your partner or buddies but that's exactly what you will always find in a high-end used Class A motor home. Some of these come with compact cockpit seating, complete with a stowaway table. This living-sitting area is positioned so that it takes up minimum space within the RV.

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