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Old 10-11-2010, 01:41 PM   #1
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Baseboard/wall heater for basement


Hi,
I need to heat approximately 800 square feet of basement. All I'm looking for is about a 5-10 degree increase in temp - it's not unbearably cold down there to begin with, just cooler than I'd like.

I guess it'd be nice to mount something in the wall where I have an existing opening I could use. I could mount the heater pointing into the living area and protruding into the utility room.

One problem is that in this utility room, I also have the gas fired boiler system for the rest of the house, so a fan pulling air over a heating coil and pushing it from the utility room out to the main basement creates negative presure in my utility room, pulling the exhaust from the main house heater back into the utility room. This is why I've been told not to use the existing in wall heater there.

So, how can I avoid creating negative pressure in my utility room and how much BTU do I need for a 5-10 degree temp increase over 800 square feet (works out to about 6400 cubic feet)? Can I get a purely electric system that would use the already-there thermostat for this?

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Old 10-11-2010, 02:18 PM   #2
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Baseboard/wall heater for basement


Use a 220 volt convection baseboard heater

http://www.dimplex.com/productshow.asp?id=167

Or Honeywell or a similar type. Can use a wall tstat if it is rated in a high enough wattage rating to equal the heater or get one with a built in tstat. I would guess you need around 2000 watts or more.

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Old 10-11-2010, 03:51 PM   #3
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can something like this be mounted within a couple feet of the ceiling? I'd like to put a couch against the same wall.
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Old 10-11-2010, 04:41 PM   #4
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No. Hot air rises so it needs to get its cold air from the floor, heat it and rise up the wall and create a convection current to disperse throughout the room.
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Old 10-11-2010, 05:12 PM   #5
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figured as much, but thought I'd ask. thanks.
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Old 10-11-2010, 05:58 PM   #6
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Baseboard/wall heater for basement


Can you box the back of the existing heater in. So that it doesn't pull air from the utility room.

Maybe make it a little bigger then the heater. And cut a return in the wall so it pulls it air from the room your heating.
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Old 10-11-2010, 06:18 PM   #7
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I guess I hadn't really considered that. That would be cheap
I'm handy enough to pull it off, I'm sure. Does the efficiency of the system suffer if the return and the output are so close together? Any other concerns?

I like this idea if it'd function well.

Last edited by ROB_IN_MN; 10-11-2010 at 06:18 PM. Reason: typo
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Old 10-11-2010, 06:47 PM   #8
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Can you take some pics of the unit and area and post them.
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Old 10-12-2010, 09:15 PM   #9
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Baseboard/wall heater for basement


Here's a picture of the rather unique installation done by the previous owner. sorry, it's a little blurry.

I think I can probably frame around it. How close to air tight would I need to get this?
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Old 10-12-2010, 09:51 PM   #10
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IMO you may be creating a fire hazard if you do not get the proper rated CFM of air thru that heater that it is designed for. I would not personally experiment with boxing it in. If it overheats and a limit fails or is inaccurate then you may have a fire and problem with your ins co. etc. No way to accurately measure the airflow thru it and waiting till it overheats and cuts out on the high limit control is not a safe way to run it/monitor it.
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Old 10-13-2010, 04:16 AM   #11
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Baseboard/wall heater for basement


Thats a fan coil unit. Designed for installation in ceilings or other tight spaces.

The enclosure should have 4" of space behind the blower, and 4" of space on either side of the housing. The box out should extend 2' below the housing.

Then use a filter grille in the wall to hold an air filter to keep from clogging up the hydro coil.
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Old 10-13-2010, 06:28 AM   #12
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Makes sense seeing he has a gas boiler.
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Old 10-13-2010, 06:30 AM   #13
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Yea. Should NEVER have been installed like it is. Previous owner must have had a death wish.
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Old 10-13-2010, 06:37 AM   #14
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I would still be worried if anything happened to it, motor wise. Doubt the ins. co would be real happy to see that hack job. Not likely it had an electrical inspection/permit. Ignorance of the rules/law is no excuse when problems/fires occur and the lawyers/adjusters get involved.
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Old 10-13-2010, 01:00 PM   #15
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hey guys,
I think I'm going to punt on the existing heater, get it taken out and look into a convection baseboard heater. I've already disconnected the power to it.

thanks for all the advice.

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