Monday 25 August 2014

quiet cool fans

Posted in : quiet cool fans

These fans really are a smart option for homeowners who wish to cut costs cooling their homes in summer.

Operating Principle:
Found in the ceiling between the living area of a home and also the attic, it moves air from the living space into the attic. Typically used during the night when the temperature and humidity of the air outdoors is more favorable than the conditions indoors, the fan pulls cool air in to the living space through open windows and forces heat into the attic after which out of the home through your attic's soffit, gable, or ridge vents.

Benefits:

These fans attract and circulate fresh air via a home, providing an inexpensive cooling effect when conditions outdoors are cooler and less humid than conditions indoors. The circulated fresh air also dilutes and any airborne contaminants in the home.

Things To Consider

 The financial savings due to reduced air conditioning unit load depends on the price of electricity in your town, humidity and temperature of the outdoor air, and the quantity of ventilation your whole house fan is able to provide. A typical installation will often pay for itself in savings within 1-2 summers of use.
 Some whole house fans are quiet, others are loud. Take this into account along with your intended use then picking out a fan. If you intend to operate the fan for a short time before bed to cool the house and then turn it off prior to going to sleep, noise might not be a concern. If you intend to run the fan continuously at night, choose a quiet model.
 During winter, an uninsulated unit will allow cold air form the attic to leak in to the living space and will allow warm air from the living space to leak out. In areas with cold winters, it is recommended fans be sealed and insulated during winter months. Many fans include insulated motorized doors that automatically open once the fan turns on and close when it turns off, eliminating this problem.
 If outdoor air is contaminated or polluted (pollen or smoke/fumes), the fan should not be used because it will suck these contaminants into the home.
 As many windows as you possibly can must be opened to allow fresh air in, and properly sized attic vents are required to allow air to exit the attic.
 Fireplace dampers and/or doors and furnace/water heater room doors must be closed when the whole house fan is on. The suction of the whole house fan is really great that it may draw air externally via a chimney. Since this air is likely to be contaminated with soot and ashes, possible airflow paths from chimneys to the home should be sealed.


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