I was very impressed by the fast service in getting a phone call and an appointment scheduled.  Today, May 21st, was a 90 degree day.  I live in a dormered cape and generally days like this make the 2nd floor unbearable without A/C.  I had no windows open and it was at least 10-15 degrees than before the fan was installed.  This is awesome and will help me minimize the amount of energy I use to cool my house!  I highly recommend this to anyone who wants to reduce their energy costs and help the environment by using Mother Earth’s natural energy.
~ Maureen, Nashua NH

CATHEDRAL CEILINGS:  REDUCE HEAT GAIN WITH SOLAR ROOF  FANS 
GREEN SUSTAINABLE ARCHITECTS BUILDERS IMPROVE LEED SCORE
SOME POSSIBLE QUESTIONS AND ANSWERS

Having been in the business of providing attic ventilation for almost thirty years, one of the most difficult (and, in fact, impossible) situations to deal with in completed construction is heat buildup in rooms (or finished attics) with “up to the peak” cathedral ceilings.  If you’re an architect, builder or homeowner contemplating using cathedral ceilings, I have some thoughts and recommendations you might consider .The present theory in attic ventilation, as reflected in most building codes, is that hot air will travel by convection up through the styrofoam “spacers” between the insulation and the roof sheathing, exiting through the ridge vent, thereby pulling fresh air in the soffit vents.
Our experience has been that this theory does not work well.  In fact, the air below the roof sheathing can reach 150 degrees F.  That hot air is rapidly expanding.  Unable to escape through the soffit and ridge vents quickly enough, it pushes through the porous insulation, heating up the ceiling and creating a tremendous heat gain in the living area. Very often even a well-designed air conditioning system can’t keep up.

SUGGESTION; Design a small attic over the cathedral ceiling. A solar-powered roof fan will exhaust heat from the “attic”, creating a vacuum, thereby pulling in cool air from the soffits through the spacers. This creates an envelope of cool air around the living space. (If you already have a flat ceiling, just add the solar fan)  

 (These heat gain forces are the same in a regular “stand-up” attic. Same Solution.     .
The living area will be AT LEAST 10 deg.F cooler with proper insulation, soffit vents and a SOLAR ROOF FAN, without the air conditioning turned on. Just a note: Insulation contractors should insure UNOBSTRUCTED airflow from soffit vents to “attic space”.

SolarFanMan.com is the Factory Certified Dealer/Installer for SunriseSolar, manufacturer of USA  made, high quality, powerful, 1250 CFM SOLAR POWERED ROOF VENT FAN.   
These are Bill Keith’s fans as seen on  ABC News With Charles Gibson.

Solar Fan Man
PO Box 485
Marshfield, MA 02050

1-800 FANS 123