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Room ventilation help

Posted on 2/18/16 at 12:20 pm
Posted by couv1217
Baton Rouge, LA
Member since Sep 2007
3594 posts
Posted on 2/18/16 at 12:20 pm
My laundry room originally had no AC/heater supply line or duct heading to it so during the winters it's very cold and and in the summer it pours heat out into the living area. It's got mini fridge, upright freezer, washer and dryer, and hot water heater so there is a good bit of heat being put out. Buddy and I added a supply line wyeing off a current line and it's just not getting very good flow.

I'm looking to put a vent in that just allows for the heat to escape through the ceiling rather than under the door. My questions are:

1) What do I need to buy?
2) Can it vent just into the attic?
3) Does it need to vent through the attic out the roof?

TIA
Posted by AUbagman
LA
Member since Jun 2014
11182 posts
Posted on 2/18/16 at 12:25 pm to
You can just vent it into the attic. Make sure you properly size the vent for your square footage. Also, if it's getting extremely humid in there, I'd check the dryer vent and make sure it's free and clear and sealed up adequately.

Measure the square footage of the room then purchase a bathroom ventilation fan that is sized accordingly. You have the option of getting one with heating output, they're just more expensive.
This post was edited on 2/18/16 at 12:28 pm
Posted by couv1217
Baton Rouge, LA
Member since Sep 2007
3594 posts
Posted on 2/18/16 at 12:27 pm to
Any recommendations on what to buy?
Posted by CaptainsWafer
TD Platinum Member
Member since Feb 2006
59450 posts
Posted on 2/18/16 at 12:27 pm to
I'd vent outside, not straight into the attic. If it's dry air it would probably be ok, but I'd want it going outside.

ETA You DO NOT want to vent a dryer or a bathroom (basically warm moist air) into the attic.
This post was edited on 2/18/16 at 12:29 pm
Posted by Shexter
Prairieville
Member since Feb 2014
21814 posts
Posted on 2/18/16 at 12:28 pm to
Keep it simple. I'd just replace the current light fixture with a bathroom light/vent combo from Home Depot. Just vent it into the attic.

Posted by AUbagman
LA
Member since Jun 2014
11182 posts
Posted on 2/18/16 at 12:30 pm to
I don't see a use in it, that is assuming he has soffit/roof vents. It won't produce that humidity a bathroom would. As humid as an attic is in the south, a laundry room won't really alter it too much.
Posted by couv1217
Baton Rouge, LA
Member since Sep 2007
3594 posts
Posted on 2/18/16 at 12:31 pm to
quote:

ETA You DO NOT want to vent a dryer or a bathroom (basically warm moist air) into the attic


It's not wet warm air. It's just hot air.
Posted by CaptainsWafer
TD Platinum Member
Member since Feb 2006
59450 posts
Posted on 2/18/16 at 12:31 pm to
Yea it'll probably be fine straight in. I'd do it outside if I could, but that's just me.
Posted by AUbagman
LA
Member since Jun 2014
11182 posts
Posted on 2/18/16 at 12:32 pm to
It's my understanding he's not venting a dryer into the attic, just the room itself, hence why it should be perfectly fine to vent into the attic.

And on that token OP, inspect your dryer vent and ensure it is vented and sealed to the outside - that's from the back of the dryer to the vent.
Posted by couv1217
Baton Rouge, LA
Member since Sep 2007
3594 posts
Posted on 2/18/16 at 12:33 pm to
If I just want to put a simple vent that exits into the attic, what would I purchase from HD?
Posted by tigeraddict
Baton Rouge
Member since Mar 2007
15176 posts
Posted on 2/18/16 at 12:34 pm to
Get a 50 CFM bathroom exhaust fan like this one:

LINK

and then run the exhaust discharge over to one of your soffit vents

Posted by couv1217
Baton Rouge, LA
Member since Sep 2007
3594 posts
Posted on 2/18/16 at 12:34 pm to
quote:

your dryer vent and ensure it is vented and sealed to the outside - that's from the back of the dryer to the vent.

Yea that's good to go.
Posted by CaptainsWafer
TD Platinum Member
Member since Feb 2006
59450 posts
Posted on 2/18/16 at 12:37 pm to
Yea. I've agreed with you and said that from the start.

I got it.
Posted by couv1217
Baton Rouge, LA
Member since Sep 2007
3594 posts
Posted on 2/18/16 at 12:38 pm to
quote:

Get a 50 CFM bathroom exhaust fan like this one:

Do I necessarily NEED that? Wasn't thinking something with a fan that needed to constantly run. Was just thinking a vent where the heat can escape into.
Posted by AUbagman
LA
Member since Jun 2014
11182 posts
Posted on 2/18/16 at 12:38 pm to
Just as Shexter said, use the spot your current light fixture is (already hooked up to a switch), install an exhaust fan/light combo, and vent it into the attic. If you decide on getting one with a heater, you'll probably have to run another wire from the fan to the switch to control the heating option:

Posted by tigeraddict
Baton Rouge
Member since Mar 2007
15176 posts
Posted on 2/18/16 at 12:41 pm to
also, keep in mind. it is not the best idea to have an exhaust fan running 24/7. if you are exhausting 50 CFM all the time, you are then pulling in 50 CFM through any opening in the house where air can leak.

I suggest getting a t-stat on the exhaust so it only runs when the temp gets too high in the room
Posted by AUbagman
LA
Member since Jun 2014
11182 posts
Posted on 2/18/16 at 12:42 pm to
quote:

Do I necessarily NEED that? Wasn't thinking something with a fan that needed to constantly run. Was just thinking a vent where the heat can escape into.


You have to overcome the pull from your central heating/air return. If you just put a hole in the ceiling, odds are it'd still just vent under the door.
This post was edited on 2/18/16 at 12:43 pm
Posted by couv1217
Baton Rouge, LA
Member since Sep 2007
3594 posts
Posted on 2/18/16 at 12:43 pm to
The only issue with replacing the current situation with a light/vent combo is that there is no switch in there. It's an old school light hanging with a chain to turn on and off.
Posted by The Mick
Member since Oct 2010
45198 posts
Posted on 2/18/16 at 12:47 pm to
Easier probably to split off an a/c duct in the attic and actually climate control the room. A manual vent with no fan sucking the air out of that room isn't going to do anything.
Posted by zmanthetigerfan
Prairieville, LA
Member since Oct 2015
889 posts
Posted on 2/18/16 at 12:48 pm to
Only read the title but i suggest you just go outside to smoke your ganga.
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