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Posted by A. Pismo Clam on July 4, 2006, 9:29 pm
Hello All,
Since we do not have the room in our attic [or our hallway] to mount a
whole house fan, we have decieded that we should go with one of these
fans. Since we are doing this ourselves and very new to this, we are
asking for your help, please! Today, we are about 104 degrees by our
outdoor thermometer.
Our home faces north. As a consequence the east side of the house gets
the sun first. We have two static attic vents, one at each end of the
home as well as several vents at the eaves. So here are my questions:
[here's the link]
http://www.bvc.com/products/cool/gablemount/cx1600.html
When we mount one of these attic fans should we place it on the east
end of the house, bringing in cool air from the west side of the house,
or should we mount the fan on the west side of the house, thereby
exhausting the hot air already in the attic?
By the way, they have a 2.1 amp PSC attic fan that really sounds great.
However, what does "PSC" mean.
Many thanks for taking the time to respond!
Norm & Loretta
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Posted by Joseph Meehan on July 4, 2006, 9:42 pm
A. Pismo Clam wrote:
show/hide quoted text
> Hello All,
> Since we do not have the room in our attic [or our hallway] to mount a
> whole house fan, we have decieded that we should go with one of these
> fans. Since we are doing this ourselves and very new to this, we are
> asking for your help, please! Today, we are about 104 degrees by our
> outdoor thermometer.
> Our home faces north. As a consequence the east side of the house gets
> the sun first. We have two static attic vents, one at each end of the
> home as well as several vents at the eaves. So here are my questions:
> [here's the link]
> http://www.bvc.com/products/cool/gablemount/cx1600.html
> When we mount one of these attic fans should we place it on the east
> end of the house, bringing in cool air from the west side of the
> house, or should we mount the fan on the west side of the house,
> thereby exhausting the hot air already in the attic?
> By the way, they have a 2.1 amp PSC attic fan that really sounds
> great. However, what does "PSC" mean.
> Many thanks for taking the time to respond!
> Norm & Loretta
Do you want to use this as a whole house fan or just an attic fan to try
and reduce the heat in an unoccupied attic?
If the first, you have the wrong fan and it will do very little. If the
second I suggest that proper passive (no fans) venting is usually far better
as there is little difference in real results of a active or passive system,
assuming they were both well designed and the passive is maintenance free,
energy free and silent.
--
Joseph Meehan
Dia duit
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Posted by Al Bundy on July 7, 2006, 12:44 am
show/hide quoted text
> A. Pismo Clam wrote:
>> Hello All,
>> Since we do not have the room in our attic [or our hallway] to mount
>> a whole house fan, we have decieded that we should go with one of
>> these fans. Since we are doing this ourselves and very new to this,
>> we are asking for your help, please! Today, we are about 104 degrees
>> by our outdoor thermometer.
>> Our home faces north. As a consequence the east side of the house
>> gets the sun first. We have two static attic vents, one at each end
>> of the home as well as several vents at the eaves. So here are my
>> questions:
>> [here's the link]
>> http://www.bvc.com/products/cool/gablemount/cx1600.html
>> When we mount one of these attic fans should we place it on the east
>> end of the house, bringing in cool air from the west side of the
>> house, or should we mount the fan on the west side of the house,
>> thereby exhausting the hot air already in the attic?
>> By the way, they have a 2.1 amp PSC attic fan that really sounds
>> great. However, what does "PSC" mean.
>> Many thanks for taking the time to respond!
>> Norm & Loretta
>
> Do you want to use this as a whole house fan or just an attic fan
> to try
> and reduce the heat in an unoccupied attic?
>
> If the first, you have the wrong fan and it will do very little.
> If the
> second I suggest that proper passive (no fans) venting is usually far
> better as there is little difference in real results of a active or
> passive system, assuming they were both well designed and the passive
> is maintenance free, energy free and silent.
>
>
Hey Joseph:
I don't understand how a fan would not be better. Moving 1600 cfm of
super heated air from an attic has got to help. I'll agree it isn't going
to drop the indoor temp 5 deg but moving 1600 (or even 1200 accounting
for inefficiencies) has got to be a good thing for at least the shingles.
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Posted by Joseph Meehan on July 7, 2006, 7:59 am
Al Bundy wrote:
show/hide quoted text
> > .. I suggest that proper passive (no fans) venting is usually far
>> better as there is little difference in real results of a active or
>> passive system, assuming they were both well designed and the passive
>> is maintenance free, energy free and silent.
> Hey Joseph:
> I don't understand how a fan would not be better. Moving 1600 cfm of
> super heated air from an attic has got to help. I'll agree it isn't
> going to drop the indoor temp 5 deg but moving 1600 (or even 1200
> accounting for inefficiencies) has got to be a good thing for at
> least the shingles.
Note that I wrote: ".. there is little difference in real results of a
active or passive system..." The difference is just not worth the cost in
reliability (if the fan fails then it is blocking the passive vent) cost of
the fan, power usage, vibration and noise. Yes even a small decrease would
be good, but not enough good to outweigh the cost in most situations.
--
Joseph Meehan
Dia duit
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Posted by Al Bundy on July 7, 2006, 11:04 pm
show/hide quoted text
> Al Bundy wrote:
>> > .. I suggest that proper passive (no fans) venting is usually far
>>> better as there is little difference in real results of a active or
>>> passive system, assuming they were both well designed and the
>>> passive is maintenance free, energy free and silent.
>> Hey Joseph:
>> I don't understand how a fan would not be better. Moving 1600 cfm of
>> super heated air from an attic has got to help. I'll agree it isn't
>> going to drop the indoor temp 5 deg but moving 1600 (or even 1200
>> accounting for inefficiencies) has got to be a good thing for at
>> least the shingles.
>
> Note that I wrote: ".. there is little difference in real results
> of a
> active or passive system..." The difference is just not worth the
> cost in reliability (if the fan fails then it is blocking the passive
> vent) cost of the fan, power usage, vibration and noise. Yes even a
> small decrease would be good, but not enough good to outweigh the cost
> in most situations.
>
>
>
Now noted that you are speaking of all components over time. Thanks for
the reply.
But the home inspector when you sell checks the "Excellent" box for attic
ventalation. Impresses the buyer. Some buyers probably even think that
means it air conditioned up there :-)
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> Since we do not have the room in our attic [or our hallway] to mount a
> whole house fan, we have decieded that we should go with one of these
> fans. Since we are doing this ourselves and very new to this, we are
> asking for your help, please! Today, we are about 104 degrees by our
> outdoor thermometer.
> Our home faces north. As a consequence the east side of the house gets
> the sun first. We have two static attic vents, one at each end of the
> home as well as several vents at the eaves. So here are my questions:
> [here's the link]
> http://www.bvc.com/products/cool/gablemount/cx1600.html
> When we mount one of these attic fans should we place it on the east
> end of the house, bringing in cool air from the west side of the
> house, or should we mount the fan on the west side of the house,
> thereby exhausting the hot air already in the attic?
> By the way, they have a 2.1 amp PSC attic fan that really sounds
> great. However, what does "PSC" mean.
> Many thanks for taking the time to respond!
> Norm & Loretta