Thread: attic fan?
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Old Jun 18, 2009 | 04:23 PM
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waldig
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Joined: Feb 2008
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From: VA
Talking Re: attic fan?
Being in the trade, attic fans help, they fail they make noise and they can overheat, though fires are very rare.

The attic needs to be cooled to suppress the heat load of the a/c system amd to EXTEND THE LIFE OF THE ATTIC PLYWOOD THAT AGES FASTER WITH HEAT OF 150 AND HIGHER. Try using an Infared gun to gauge the actual temperature. I do.

The fan should be set high enough that it shuts off by morning and does not make a noise all day and night. 95 is a start point and the 45 watts is nothing compared to a compressor, 3 tons is about 3 horsepower.

I PREFEER the passive fans that are called turbines and go with the wind. THey allow heat to go out when there is no wind and really help with a breeze. They take no energy, can not burn, dont get stuck, stall, last a long time and are even available with thermostatic vent controls that shut in the winter, THOUGH you want ventilation in the winter to keep the humidity down.

BTW The air going out needs to come in and you need to confirm that the house has vents in the soffet to allow air IN THE ATTIC also.

I was at COSTCO today looking at the attic fans that are solar, neet and a nice try, but dont work in the evening when the heat is starting to fall off outside, so they are CUTE and expensive.

Iam all about turbine fans.

OH BTW did I tell you that we are using LEAK STOP for air conditioners now. WOO WOO it seems to to work, I have been testing it for 2 years on my truck fleet, office heat pump and now on my customers systems with good results to KEEP AN OLD SYSTEM RUNNING A few more years. Though some really need to be discarded and the old R22 freon is gone at the end of the year and its time to go with the newer R410 freon.

IF you got a leaker or car that seems to go down, the leak stop is one item I can recommend, bought 5 cases so far this season.

ENJOY, W DY
 
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