A whole house fan is a type of fan or exhaust system that is installed in the attic of a home that is designed to circulate, exhaust, and ventilate air. Whole house cooling using a whole house fan can substitute for an air conditioner most of the year in most climates. Look at the circuit breaker or fuse box to see if a switch has flipped. Best of all, whole-house fans use only one-tenth of the energy that air conditioning does. The main function of a whole house fan is not simply to replace hot air with cooler air - it is to cool down the entire structure by drawing off the heat. This helps cool the home and attic by up to 30 degrees, and sometimes more, allowing them to stay much cooler the following day (the principle of Thermal Mass Cooling). The best fans to cool a bedroom, apartment, or house from brands like Vornado, Lasko, Dyson, and Honeywell with electric cooling fans, oscillating fans, tower fans, and more. It provides good attic ventilation in addition to whole house cooling. But when the fan isn't working the way it should, follow these steps to troubleshoot the problem. Whole house fans are easy to use, economical and good for the environment. You'll need 2 to 4 times the normal area of attic vents, or about one square foot of net free area for every 750 cubic feet per minute of fan capacity. In fact, whole house fans reduce cooling costs by 50 to 90 percent. Avoid using whole-house fans if air pollution outside is high. Generally, the more blades you have, the quieter the fan runs. How to Troubleshoot a Whole-House Fan. An older house fan is a perfect escape for the air you are paying to heat in the wintertime. In general, a large-capacity fan running at low speed makes less noise than a small fan operating at high speed. Let’s start off with the whole-house fan installation process. But in actuality, the whole house fan is an innovative approach to cooling your home that isn’t nearly as rudimentary as the term might imply. Less expensive models often have fewer blades and no anti-hum feature. Understand that, with a whole house fan, it's normal for attics to be 20 degrees hotter than the outside temperature. You may be able to use the heating and air conditioning ducts in your home as a means of whole house ventilation. When Is The Best Time Of Day To Run A Whole House Fan? The only drawback is that the whole house fans only work when the air outside is cooler than inside. If your fan doesn't come with a tight-sealing winter cover, you should either buy one or build one. The net free area of a vent takes into account the resistance offered by its louvers and insect screens. While quality Attic fan is designed specifically for the removal of air on the attic with the … Whole house fans (also occasionally called 'home cooling fans') are not particularly common in Australia, but are a very effective way to ventilate your entire house and force rapid air changes. A whole-house fan is a fairly simple device. Whole house units to extract or input fresh air (Positive input ventilation) from or too several rooms continually at a low rate to ensure good air quality. It’s common for our cooling technicians at Vegas Strong Heating & Cooling, Plumbing to meet homeowners who have never heard of a whole-house fan, but have heard of an attic fan. We are always here to give expert advice and assistance regarding our Whole House Fan Ventilation System. Make sure there is at least 30 inches of clearance above the blades of the fan, or air will be forced back through the shutter. If enough ventilation isn't provided, the fans can cause a backdraft in your furnace, water heater or gas-fired dryer, pulling combustion products such as carbon monoxide into your living space. But when the fan isn't working the way it should, follow these steps to troubleshoot the problem. The benefits are quick, quiet, and efficient home cooling for your entire home. By pulling in cooler air, a whole-house fan reduces or eliminates the need for air conditioning. While some of my neighbors air conditioners turned on as early as 9:00 this morning, I knew I would not have to run mine until much later, significantly saving on my cooling bill. Whole-house fans are also typically used to provide cooling by pulling air through open windows and doors and exhausting it through the roof. Like window fans, they are operated during the coolest part of the day (typically during the nighttime period, late evening and early morning), when outside temperatures are … Make sure the exhaust vents lie near the ridge of the roof. Tahoe Series Whole House Fans are high performance, energy saving residential cooling systems that offer a quiet and efficient cooling. Whole house fans work best when the outside temperatures are more relaxed, which is in the morning and evening. Although a whole house fan is not designed to completely replace air conditioning, it can help reduce the need for it, even during a heat wave. All whole house fans should be installed with rubber or felt gaskets to dampen noise. Cooling With A Whole House Fan. This energy-efficient system works by pulling cool, outdoor air into your home and out your attic vents. A damper would control exhaust air from your home into the attic. More air helps the shutters open all the way. Higher temperatures can result from darker shingles as well. Whole house fans can be noisy, especially if improperly installed. The motor is running but the fan blades do not spin. Check that a whole-house fan is receiving electrical power when it doesn't work at all. The fan is mounted in the ceiling of a central hallway (in the top floor of a two-story house) and draws cool outside air in through open doors and windows while forcing the hottest indoor air out the existing intake and exhaust vents on the roof. | Photo courtesy of Allison Casey. If you switch between air conditioning and cooling with a whole house fan as the summer weather changes, build a tightly sealed, hinged door for the fan opening that is easy to open and close when switching cooling methods. An attic fan cools the home by focusing strictly on keeping the attic temperatures cooler. Open windows throughout the house to prevent a powerful and concentrated suction in one location. The whole house fan will always cool the air in your house faster, whereas the air conditioning unit takes longer to bring the cooling effect. Hunker may earn compensation through affiliate links in this story. Open windows if the shutter rattles. By creating an account you agree to the Hunker. The whole house fan pulls air in from open windows and exhausts it through the attic and roof. If this doesn't fix the problem, a burned-out fan motor may need replacing. And this takes time. Iliving speed shutter exhaust fan is 18 inches in length and has … This whole-house fan is installed on the ceiling between the attic and living space. A whole house fan is a ventilation cooling system that uses less energy than a traditional air conditioner. If your fan doesn't come with a tight-sealing winter cover, you should either buy one or build one. The basic design is simple: An attic-mounted fan pushes hot air out through attic vents and draws cooler, outside air in through open doors and windows. The whole house fan cools the house by both pulling fresh air into the home and by cooling the attic as it exhausts cooler air into it. Like exhaust ventilation systems, supply ventilation systems do not temper or remove moisture from the make-up air before it enters the house. The whole house fan motor belt may be loose or broken, in which case it will need replacement. Best of all, whole-house fans use only one-tenth of the energy that air conditioning does. Frequently Asked Questions. You can set a multi-speed fan to a lower speed when noise is a problem. Whole-house fans are large ventilation fans, typically installed in the attic, able to cool an entire house at a fraction of the cost of air conditioners. Use alone or with an air conditioner You can use a whole-house fan as a cooling system by itself, or you can combine it with your central air conditioner to help cool the house more quickly. If you can't find any leaks, but the humidity seems high in the attic, look for improper venting. Whole house fans combined with ceiling fans and other circulating fans provide acceptable summer comfort for many families, even in hot weather. During the warmer months, using the Solatube Whole House Fan not only cools the air in your house, but also the structure and contents. This would involve installing an intake duct to pull air into an attic-mounted system that directs the air into your heating and cooling ducts. Whereas Attic fans are highly active during the day when the temperatures are very high. Whole-house fans have helped cool homes for a century. Usually the heavier the fan and louvers, the less of a problem this will be. Be cautious when operating these large exhaust fans. The louvers close when the fan is not operating. The fan operates for a while and then stops. If you switch between air conditioning and cooling with a whole house fan as the summer weather changes, build a tightly sealed, hinged door for the fan opening that is easy to open and close when switching cooling methods. Whole house fans can also be faster for cooling a hot home than most air conditioners. This process enacts Thermal Mass Cooling, keeping your … QuietCool whole house fans are mounted away from the ceiling to reduce fan sound. While a whole house fan is known for saving money on the cooling bill, it can possibly lead to a higher heating bill in the winter, especially for older whole house fans. A fan consumes less energy. This is a self-contained duct system that is compact and doesn’t take up… Whole House Fan is the Power Saving Healthy Alternative to Air Conditioning Cool like the Breeze Naturally through your Entire Home for around 10c an hour (02) 9943 0650 email@example.com In addition to whole house fans, the ducts of your central heating and cooling system can be modified to provide whole house cooling. Whole house fans work much faster than air conditioning systems, you can begin to experience the cooling effects in a matter of minutes. Tahoe Series Features: PSC Motor: Economical and reliable Permanent Split Capacitor (PSC) motors that operate with up to 90% less energy than traditional air conditioning and offer a quiet cool with less noise. US Department of Energy, Energy Savers.Gov The whole house fan pulls air in from open windows and exhausts it through the attic and roof. An annoying hum is a common complaint with whole-house fans. A whole house fan operates at a fraction of the cost of air conditioning. Replace a loose or broken belt in the fan motor if your whole-house fan runs, but doesn't produce any airflow. Many clients report reducing their reliance on air conditioning by anywhere from fifty to ninety percent. Whole House Fans Hawaii is operated by Island Cooling, an eco-cooling company known for excellent customer service.Serving Honolulu, Oahu and all Hawaii islands for over 10 years. Installing a whole house fan is tricky and should be done by a professional. This rapid air exchange—large fans can purge a house of hot air in two to three minutes—not only removes built-up heat but also creates a pleasant breeze. Office of Energy Efficiency & Renewable EnergyForrestal Building1000 Independence Avenue, SWWashington, DC 20585. The louvers close when the fan is not operating. Eliminate damp smells from the fan by checking your attic for leaks. A whole house fan can quickly ventilate your entire home. Fuel Efficient & Alternative Fuel Vehicles. Thus, they may contribute to higher heating and cooling costs compared with energy recovery ventilation systems. A fan for your whole house might sound like a layman’s description of an air conditioning unit “ or maybe like an A/C alternative that couldn’t possibly pass muster. The Whole House Fan creates a powerful updraft as fresh air is drawn in through windows and doors cooling you as it flows through your home to the roof space and is pushed outside under pressure through vents. Check with a local professional to find out if this option is right for you. Whole house fans solve that problem altogether. If not, you can hire an electrician or handyman to install it for you. How to Troubleshoot a Whole-House Fan. Ensure that your fan can run at higher settings by checking the exhaust ventilation. The air-change rate you will choose depends on your climate and how much you will depend on the whole house fan for cooling. An experienced professional should take your attic measurements and install your dedicated circuit wiring and, if needed, your new attic vents. This is because the hot air is literally removed and replaced with cooler air from the outside, while air conditioners cool down the air in the home. A whole house fan is often confused with an attic fan which only exhausts the hot air inside the attic rather than the entire volume of air inside of the home. The thing is that these two systems are similar. Whole house cooling using a whole house fan can substitute for an air conditioner most of the year in most climates. More vent area is better for optimal whole house fan performance. QuietCool Whole-House Installation. A whole house fan provides excellent ventilation to achieve lower indoor temperatures. Whole house fans should provide houses with 3 to 6 air changes per hour (varies with climate, floor plan, etc.—check with a professional to determine what is appropriate for your home). You should see intake vents in the overhang or just below. When operated as intended, with open windows, these devices produce substantial increases in ventilation with outdoor air throughout a house. Compared to the attic fan, which only exhausts air from the attic and doesn’t provide a cooling solution to the living area. It provides good attic ventilation in addition to whole house cooling. Using a whole house fan is a cost effective and efficient way to cool your home. You do not need to leave your fan on the whole day, but the ac unit should be on for long to bring the cooling effect. In addition to the energy savings of whole house fans, they are also vital tools for removing fumes, moisture, and environmental pollutions from the home leaving the air inside your home not only cooler, but also healthier to breathe – regardless of where you live. This whole-house fan is installed on the ceiling between the attic and living space. They cost very little to operate and deliver a lot of benefits. Compared to a complete air conditioning system, whole … Our Oahu warehouse carries advanced whole house fans for self-install. They are efficient, last long and require almost no added maintenance. Stop fan humming by using the anti-hum feature if it's available. Even with very high air flow - say 3000 cfm - your house can only shed pent-up heat at a limited rate. Whole house fans are usually installed in an attic and are commonly referred to as attic fans. In this case, running the fan on low can reduce or eliminate humming. Whole house fans are a cheaper solution to cold air ventilation and can provide just as much cooling power as an air conditioning unit, some removing hot air from a room in about two to three minutes. While there are many different types and styles of these fans available in the marketplace, if you are looking to purchase a whole house fan – consider investing in a system that is … A whole house fan has more than a goal because they keep both the building and the entire house cool. This option is also rather modestly priced. If not, the problem is probably inside the fan itself -- such as loose wiring or a burnt out motor (the costliest of all whole house fan repairs). Other possibilities include damage to the wiring or a switch, best repaired by an electrician. By pulling in cooler air, a whole-house fan reduces or eliminates the need for air conditioning. Iliving Speed Shutter Exhaust Fan. Attic ventilation will usually need to be increased to exhaust the fan's air outdoors.