US Department of Energy on Whole House Fans:
The whole house fan pulls air in from open windows and exhausts it through the attic and roof. It provides good attic ventilation in addition to whole house cooling. A whole house fan provides excellent ventilation to achieve lower indoor temperatures. US Department of Energy, Energy Savers.Gov
With its warm sunshine and cool trade winds, Hawaii’s beautiful climate is moderated by the temperature of the surrounding ocean. In downtown Honolulu the range between the coldest and warmest months averages only a 6° F difference. In the leeward areas, temperatures in the low 90’s may be reached on several days during the year, but temperatures higher than these are unusual. In the windward areas and neighbor islands air temperatures are even more comfortable.
When we leave our homes for the day, the air heats up and stagnates. The hot air then rises and expands, making your home uncomfortable. During hotter days, in-home temperatures can reach 100 plus degrees.
Hot expanding air also accounts for the difficulty in using small fans to blow cool air into the home as these fans lack the volume of air movement needed to rid the home of heat.
In addition, some homes have hot zones or specific areas where there is inadequate air circulation for reasons such as not having windows, a window that faces the afternoon sun, having a poorly constructed ceiling or the lack of a cross-breeze.
Since installing the Whole House Fan and Solar Guard Insulation in August of 2009, I haven’t had to use the A/C once!”–Peter, Ewa Beach, Oahu
I’ve told a dozen of my friends about the Whole House Fan, it’s the best improvement we’ve made to our home.” –Shaina E, Kailua,
A Whole House Fan is the only fan powerful enough to cool your home’s living space and your attic. It does this by exhausting the hot air out of your home and drawing cooler air through your living space.
Whole house fans help cool your home by pulling cool air through the house and exhausting warm air out of the house. Typically, these very large fans are installed by professionals in the attic of the home.” –The Environmental Protection Agency (EPA), Green Homes
The Whole House Fan is also remarkably Energy Efficient. With energy consumption starting at 47 watts, and HECO rates of 35 cents per KWH, Whole House Fan use pennies of energy per hour.
A Whole House Fan can take advantage of a home’s PV solar system for power. As the main purpose of the Whole House Fan is to provide on-demand cooling, having the fan grid tied allows the homeowner to use it in the evenings and night when the sun has gone to bed.
CFM (cubic feet per minute) is the measure of air that is moved by a fan. Fans with a higher CFM can cool an area more effectively. The Whole House Fan is sized to remove the air volume of the room to be cooled in three minutes or less. While a smaller fan can move 600-1200 CFM, a Whole House Fan will move from 1500 to over 10,000 CFM. Summary: A Solar Attic Fan is great as an attic vent, but the energy efficient Whole House Fan has a greater impact on home cooling.
Most homes have some type of passive attic ventilation. These passive vents require wind or hot rising air to drive them. Of course on very hot days with little wind, the hot rising air escapes slowly.
An advantage of the Whole House Fan is that there is usually no need to create roof holes, simply install in the attic and vent through attic vents. This leads to greater flexibility and allows for installation in Town Homes, Condos and other CCR communities. Our experts can determine during the home consultation, if existing attic vents are sufficient.
During the summer, when temperatures can soar, your attic is 145 degrees and the temperature on your new roof is nearly 180 degrees. It is now more important than ever for a total roof ventilation system. When it comes to ventilation, more is always better. Choices are many in ventilation.
Ventilation is Key to Roof Lifespan–Hawaii News Now
Whole House Fans Are:
- Manufactured in America
- Highest CFM (airflow) on market
- Patented design have the quietest operation
- Energy efficient motors draw as little as 47 watts per hour
- Fans are maintenance free
- Weather and insect proof dampers
- Digital 8 hour countdown timer, programmable timer and remote options
- Over a dozen different sizes -in stock
- Cool your bedroom or office space with a Quiet Cool area fan
- Insulated duct and damper provide an alternative to A/C
A Quiet Cool Way to Cool Your Home–How to install a Quiet Cool Fan–by Quiet Cool.Com
Watch a Whole House Triangle Fan Being Installed By A Happy Customer