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OT: Cooling your home with roof space / loft / attic ventilation.

R

Rich Grise

Jan 1, 1970
0
So it's better to have electrically powered fans that only run when you need
them then ?

I can't understand the logic here - it's certainly cheaper to use vents
that don't need to use power!

As far as "better", that depends on too many variables, like prevailing
winds, average temperature - what I have in mind is, you'll probably need
more ventilation when the winds are calm and the heat is stifling -
convective venting might not be enough, so could use a power assist, but
other than that, I'd invest in one of the passive ones first.

Cheers!
Rich
 
J

James Arthur

Jan 1, 1970
0
I can't understand the logic here - it's certainly cheaper to use vents
that don't need to use power!

As far as "better", that depends on too many variables, like prevailing
winds, average temperature - what I have in mind is, you'll probably need
more ventilation when the winds are calm and the heat is stifling -
convective venting might not be enough, so could use a power assist, but
other than that, I'd invest in one of the passive ones first.

They (roof-mounted attic ventilation fans) are also available solar-
powered, which makes a certain amount of sense: the hotter the sun
shines, the better it works. Not terribly expensive either
($100-200?). I saw some last weekend, but have forgotten the exact
price.

Cheers,
James Arthur
 
K

krw

Jan 1, 1970
0
They (roof-mounted attic ventilation fans) are also available solar-
powered, which makes a certain amount of sense: the hotter the sun
shines, the better it works. Not terribly expensive either
($100-200?). I saw some last weekend, but have forgotten the exact
price.

All reports I've seen say that powered vents and turbines do nothing.
Depending on the area of the country, ridge or gable vents, along
with soffit vents work better. They don't squeak either.
 
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