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Posted by on June 20, 2006, 7:35 pm
I have a 1700 sq. foot house without A/C, I installed (2)whirly-bird
ventilators last year, I counted 12 -- 4 X16 soffit vents. My house
has many ceiling fans but it does warm up in the afternoon if the
outside temp. reaches 80F and above, my attic temp. reaches about
110-120F on those warm/hot days. Would a power attic fan (roof
mounted) be better or a whole house fan work with my current vents??
Home is in Southern California, warm 80F-90F days and 65-75F nights....
Thanks.
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Posted by scott moore on June 20, 2006, 7:51 pm
res0wutv@verizon.net wrote:
> I have a 1700 sq. foot house without A/C, I installed (2)whirly-bird
> ventilators last year, I counted 12 -- 4 X16 soffit vents. My house
> has many ceiling fans but it does warm up in the afternoon if the
> outside temp. reaches 80F and above, my attic temp. reaches about
> 110-120F on those warm/hot days. Would a power attic fan (roof
> mounted) be better or a whole house fan work with my current vents??
> Home is in Southern California, warm 80F-90F days and 65-75F nights....
> Thanks.
>
I'm a "fan" of my whole house fan. It solves two problems at once,
getting outside air into the house when the house overheats, and
getting the hot attic air out at the same time.
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Posted by John Grabowski on June 20, 2006, 9:27 pm
> I have a 1700 sq. foot house without A/C, I installed (2)whirly-bird
> ventilators last year, I counted 12 -- 4 X16 soffit vents. My house
> has many ceiling fans but it does warm up in the afternoon if the
> outside temp. reaches 80F and above, my attic temp. reaches about
> 110-120F on those warm/hot days. Would a power attic fan (roof
> mounted) be better or a whole house fan work with my current vents??
> Home is in Southern California, warm 80F-90F days and 65-75F nights....
> Thanks.
>
I vote for a whole house fan. It will keep the temperature down in your
attic and house.
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Posted by Joseph Meehan on June 20, 2006, 9:43 pm
res0wutv@verizon.net wrote:
> I have a 1700 sq. foot house without A/C, I installed (2)whirly-bird
> ventilators last year, I counted 12 -- 4 X16 soffit vents. My house
> has many ceiling fans but it does warm up in the afternoon if the
> outside temp. reaches 80F and above, my attic temp. reaches about
> 110-120F on those warm/hot days. Would a power attic fan (roof
> mounted) be better or a whole house fan work with my current vents??
> Home is in Southern California, warm 80F-90F days and 65-75F
> nights.... Thanks.
I would say you are doing well. I would not go to a power roof fan.
If you like and you are not using central air, I would consider a whole
house fan mounting in the ceiling into the attic. It not only will help
reduce the temperature in the attic, but it will bring fresh (hopefully
cooler) air into your home.
--
Joseph Meehan
Dia duit
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Posted by Edwin Pawlowski on June 20, 2006, 9:57 pm
>I have a 1700 sq. foot house without A/C, I installed (2)whirly-bird
> ventilators last year, I counted 12 -- 4 X16 soffit vents. My house
> has many ceiling fans but it does warm up in the afternoon if the
> outside temp. reaches 80F and above, my attic temp. reaches about
> 110-120F on those warm/hot days. Would a power attic fan (roof
> mounted) be better or a whole house fan work with my current vents??
> Home is in Southern California, warm 80F-90F days and 65-75F nights....
> Thanks.
>
Ideal is both.
If you have no AC, go with the whole house fan. The advantage is that it
will draw in cooler air from outside and push the hot air out of the attic.
The disadvantage is that on a very hot day, it will draw in the hot outside
air and replace what may be cooler inside. That is when the power vent in
the attic is best.
If you do add AC, you don't want to use a while house fan at the same time.
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