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Punta Gorda - Port Charlotte Charlotte County
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Old 07-11-2013, 02:20 PM
 
Location: Sunny FLA
688 posts, read 1,610,683 times
Reputation: 302

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Hey all, hope everyone is enjoying the dry weather (for now)!
With keeping both cars outside of the garage right now, I was wondering if it would be good or bad to put a 12"x12" vent in the ceiling of the closed garage.
Specs:
2 car garage
CBS house, single level, 4 vents in roof
A/C is hung from the ceiling inside the garage
Pull down stairs to attic in garage (could put a vent right in the pull down stairs)

I noticed some slight mold on the outside of our a/c unit from condensation. Wondering if the garage had some venting it may stop this.

Anyone with any ideas? The vent is my idea and don't want to upset the integrity of the house or ventilation. (note-condensate drain is clear, this is from humidity/heat in garage)

Thanks!!!!!!
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Old 07-11-2013, 02:59 PM
 
Location: Lemon Bay, Englewood, FL
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I doubt a vent will help remove the humidity, unless you actually run an A/C vent into the garage (which would be a huge waste of money)
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Old 07-11-2013, 03:03 PM
 
Location: Florida
1,643 posts, read 2,651,484 times
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You mean a vent and not an A/C register right? I don't see how just a vent to the attic will help as the heat and humidity is probably worse up there. Unless you have a big attic fan the heat from the garage won't rise to the attic as there is already hotter air up there.

A window might work better? My garage has two windows (I keep them shut) and the back door is a jalousie type that I keeped cracked open. Or a small fan near the A/C unit would probably work if that is all you are worried about. The best option would be to "barely" A/C the garage with a very small register but of course that will cost a little more on your electric bill, and you'll have to worry about insulating it.

I'd probably just spray the air handler with some mold inhibitor, if there is such a thing....?

The outlet plenum of the air handler should be very well insulated to keep condensation down and efficiency up. If it's not, do it!
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Old 07-11-2013, 03:35 PM
 
Location: Punta Gorda Isles
177 posts, read 408,089 times
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Default Vent

If you were building a new home in Charlotte County today, I'm about 98.6% sure that venting in the garage (or garage door) would be required to meet building specs. Drive by a new house under construction and you'll see what I mean.
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Old 07-11-2013, 04:14 PM
 
Location: sittin happy in the sun :-)
3,638 posts, read 6,506,480 times
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think you might find that's more to do with flood zones/elevations
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Old 07-11-2013, 04:24 PM
 
Location: Lemon Bay, Englewood, FL
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Yep, flood gates in the garage door
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Old 07-12-2013, 03:33 AM
 
Location: sittin happy in the sun :-)
3,638 posts, read 6,506,480 times
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designed to let water out if the garage is below the flood zone level and water get in


BUT here's my thinking ...if they let water out.....wont the also let it in, in the first place ?????? Also some people just leave knock outs in the blocks -great big holes ,with no mesh.....ideal for snakes and rodents etc to get through
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Old 07-12-2013, 05:23 AM
 
Location: SUNNY FLORIDA
219 posts, read 639,725 times
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Default Venting

I put a small whole house fan in the garage with a thermostat control,it sucks the heat into the attic and it gets vented out the attic vents works great. The problem is you won't find them around here I ordered online and MAKE SURE YOU HAVE NO GAS APPLIANCES IN THE GARAGE AS IT WILL CAUSE THE FLAME TO GET SUCKED OUT
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Old 07-12-2013, 06:17 AM
 
Location: Port Charlotte, FL - Dallas, PA
3,708 posts, read 3,640,595 times
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Quote:
Originally Posted by mr&mrssunshine View Post
designed to let water out if the garage is below the flood zone level and water get in


BUT here's my thinking ...if they let water out.....wont the also let it in, in the first place ?????? Also some people just leave knock outs in the blocks -great big holes ,with no mesh.....ideal for snakes and rodents etc to get through
Yes. My understanding is that they allow water to get both in and out, thus relieving the pressure created by the water against only one side of the walls.
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Old 07-12-2013, 07:11 AM
 
Location: Sunny FLA
688 posts, read 1,610,683 times
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Thank you all for the ideas! Yes, just a vent and not a register.
Guess I'll leave it as it is. Would like a thermostat controlled fan but that will have to wait.
A/c is insulated, both the return and supply. Inside the unit has the factory insulation.
The outside cleans up easily, guess I'll just keep it on my routine list.
Appreciate the help!!!!
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