The QUIETCOOL QC-1500 (U.S. Patent #7497774) is an innovative whole house fan that is not mounted to the ceiling but instead is suspended in the attic with straps from the roof rafters. It's connected to an attractive ceiling grill with a patented acoustical insulated flexible duct, thus eliminating all vibration, rattle and noise in the house. It is so quiet in operation that it can be installed in a bedroom or sleeping room without a sleeping person being able to hear it. With the bedroom door closed you can enjoy privacy and individual control.

This cleverly engineered system can be installed almost anywhere in a ceiling or vertical wall in less than 1/3 the time it takes to install a Typical whole house fan. It has a damper with insulated doors that prevents cold air intrusion in the wintertime.

The Quiet Cool whole house fans are 100% made in the USA and come with a 10-year manufacturer warranty.

The fans work by pulling cool, outside air inside through open windows and by creating a positive pressure in the attic, which exhausts the hot air through the attic to the outside, through your existing attic vents. Whole house fans are used to both cool and ventilate your house.

The best time to use whole house fans are during the hours when the outdoor temperatures are lower than indoor temperatures.

In summer, the air inside a home is heated during the hot part of the day. During the morning, late evening, and night, the outside air is often cooler and can be used to replace the inside air. Operating the whole house fans at these times will cool interior materials.

As daytime temperatures rise, the whole house fans can be turned off. The cool materials (along with ceiling or circulating fans, which create an additional cooling effect) will help keep the interior more comfortable.

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The “QuietCool” multi-fan and multi-location system is designed to cool and ventilate the entire home. More versatility means more convenience and more effective results.

A whole house fan system is able to cool your house in three ways:

• The fans draw cooler outside air in through your open windows which lowers the room temperature by as much as 10 to 20 degrees F. Your open windows serve as intake “vents” which allow you to control the air flow by selecting how many or which windows you open.

• Moving air, blowing through the house cools the occupants. The cooling breeze can lower the skin temperature by 5 to 10 degrees F.
• The cooler air, after passing through the living space, is forced into the attic which pushes the hot attic air out through the attic vents. This can lower the attic air temperature by as much as 40 degrees F.

  The attic can reach temperatures in excess of 150 degrees F. in summer, and that air, if allowed to remain undisturbed, will radiate heat down through the insulation to heat the living space. That is the main reason that a home, without the use of a whole house fan, remains uncomfortably warm in summer evenings, and that the upper floor of a multi-floor house is always warmer.

Whole house fans are rated according to the amount of air they can move. This is measured in cubic feet of air per minute, or CFM. In order to be effective, a whole house fan’s CFM rating should be 2 to 3 times the square footage of the house. For example, a 1,500 square foot house should have a whole house fan system capable of 3,000 to 4,500 CFM.

Overall attic venting is the only limiting factor on how many CFM can be efficiently moved. However, attic venting can be easily increased. Too many CFM for the attic venting can cause undue stress on the whole house fan and pressurizes the attic and walls. Too little CFM will not provide the desired minimum of 10 air exchanges per hour as recommended by the House Ventilation Institute, and may not provide the cooling draft to lower house, attic, and skin temperatures in a timely fashion. Order your QuietCool whole house fans today.