Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Roofing/Siding

CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!

Reply
 
Thread Tools Search this Thread Display Modes
Old 06-02-2010, 08:01 PM   #1
Member
 
Join Date: Aug 2009
Posts: 155
Rewards Points: 152
Default

Whole House Fan


Hey Guys - recently moved in (about 1yr ago) to my first house. Its a split level where there is a ground level area, a mid level, then an upper level (where the bedrooms are). I'm not concerned wit hthe ground level as it always stays fairly cool down there.... What I would like is to install a whole house fan to 'cool' the rest of the house.

Anyone have details on them, ie where to install, how they are installed, if its a DIY job or other??

tb582 is offline   Reply With Quote
Old 06-02-2010, 09:08 PM   #2
Member
 
Join Date: Jul 2008
Location: NW of D.C.
Posts: 5,990
Rewards Points: 2,000
Default

Whole House Fan


What is the volume of your house? It should be something on the order of 5000 to 10,000 cubic feet.
I guess you want at least 15 air changes per hour which would be >2500 CFM/500 watts for 10k cubic feet.


Last edited by Yoyizit; 06-02-2010 at 09:15 PM.
Yoyizit is offline   Reply With Quote
Old 06-03-2010, 09:19 AM   #3
Member
 
Join Date: Aug 2009
Posts: 155
Rewards Points: 152
Default

Whole House Fan


Quote:
Originally Posted by Yoyizit View Post
What is the volume of your house? It should be something on the order of 5000 to 10,000 cubic feet.
I guess you want at least 15 air changes per hour which would be >2500 CFM/500 watts for 10k cubic feet.
hmm ok thanks -

anyone got any links to house fans, recommend a good one?
tb582 is offline   Reply With Quote
Old 06-03-2010, 10:50 AM   #4
Member
 
Join Date: Jul 2008
Location: NW of D.C.
Posts: 5,990
Rewards Points: 2,000
Default

Whole House Fan


Links
http://www.google.com/search?client=...UTF-8&oe=UTF-8
Yoyizit is offline   Reply With Quote
Old 06-03-2010, 04:58 PM   #5
Member
 
Join Date: Jan 2007
Posts: 2,384
Rewards Points: 1,000
Default

Whole House Fan


www.airvent.com is a good source for all ventilation needs and specifications.

Ed
Ed the Roofer is offline   Reply With Quote
Old 06-03-2010, 06:40 PM   #6
Member
 
Join Date: Jul 2008
Location: NW of D.C.
Posts: 5,990
Rewards Points: 2,000
Default

Whole House Fan


Quote:
Originally Posted by Ed the Roofer View Post
www.airvent.com is a good source for all ventilation needs and specifications.

Ed
This formula from the link

"Calculate the interior square footage of living area (do not include garage, attic or basement) and multiply the total square footage by three. This will give you the CFM number required for the whole-house fan."

gives 22 ACH, assuming 8' ceilings. Isn't this a bit on the high side?

I'd think at some point it'd be stealing combustion air.

Last edited by Yoyizit; 06-03-2010 at 06:51 PM.
Yoyizit is offline   Reply With Quote
Old 06-03-2010, 09:37 PM   #7
Member
 
Join Date: Jan 2007
Posts: 2,384
Rewards Points: 1,000
Default

Whole House Fan


Quote:
Originally Posted by Yoyizit View Post
This formula from the link

"Calculate the interior square footage of living area (do not include garage, attic or basement) and multiply the total square footage by three. This will give you the CFM number required for the whole-house fan."

gives 22 ACH, assuming 8' ceilings. Isn't this a bit on the high side?

I'd think at some point it'd be stealing combustion air.
It can, which is why you need to open as many windows as possible. I never saw any ratings on how many and what size would be required per the CFM or ACH though.

Ed
Ed the Roofer is offline   Reply With Quote
Old 06-04-2010, 09:31 AM   #8
Newbie
 
Join Date: May 2010
Posts: 20
Rewards Points: 10
Default

Whole House Fan


Just remember you'll need enough attic ventilation (roof) to get rid of the moist air from the living space. You'll get mold if you don't have intake/exhaust venting for roof. Ridge vents or another powered fan on roof should do it.

igneous1 is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
My house's previous owner - DIY horror stories Leah Frances General DIY Discussions 128 03-18-2014 06:41 AM
replumbing an old house simonfrog Plumbing 7 01-30-2012 04:45 AM
New house drywall DISASTER pharm07 Off Topic 13 03-25-2011 02:24 PM
I have Central Heating & Air, but house won't cool down..HELP!! exiledone1 HVAC 13 07-10-2009 10:09 PM
Moving a House 70 miles- Practical? GOTHICrevivalRULES Building & Construction 19 11-27-2008 08:58 PM




Top of Page | View New Posts

Copyright © 2003-2014 Escalate Media. All Rights Reserved.