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Old 02-06-2009, 08:24 PM   #1
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Recommend whole house dehumidifier?


I have a 1200 SF ranch with forced air oil heat and our house couldn't be drier. Both of us have constant dry skin, and we can't get off of the couch without becoming charged with 100,000 volts! Also, our hardwood floors have seperated in spots no doubt due to the lack of moisture in the air-they were fine in the summertime. Next winter we'll be burning wood via an add-on furnace so it will only get drier. Can someone recommend a whole house humidifier that will distribute humidity via the ductwork?

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Old 02-06-2009, 09:46 PM   #2
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Recommend whole house dehumidifier?


How much you willing to pay me for the information?

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Old 02-06-2009, 09:58 PM   #3
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Recommend whole house dehumidifier?


I just bought an AprilAire 700a for my house, it should arrive Monday.

I picked it because it is a powered unit and has an outdoor temp probe so that it can adjust the inside humidity levels to avoid condensation on the windows.
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Old 02-07-2009, 05:48 AM   #4
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Recommend whole house dehumidifier?


Look in to the Honeywell tru-steam.
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Old 02-07-2009, 06:05 AM   #5
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Recommend whole house dehumidifier?


Before you get a humidifier.

Tighten up your home.

Caulk around all your windows, seal all switches and receps on outside walls, repair/replace all worn door seals.
Check for air leaks at all recessed lighting.
Make sure all exhaust fans have dampers that are closing when not running.
You have low humidity, because you have a high fresh air infiltration rate.

You may need to use a steam humidifier once you start using the wood stove. If it uses inside air for combustion.

The EWC Autoflo S2020(22 gallons a day), should handle the load.
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Old 02-07-2009, 06:06 AM   #6
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Recommend whole house dehumidifier?


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Look in to the Honeywell tru-steam.
The Truesteam are TOO small.
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Old 02-07-2009, 06:06 AM   #7
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Recommend whole house dehumidifier?


Quote:
Originally Posted by AndrewF View Post
I just bought an AprilAire 700a for my house, it should arrive Monday.

I picked it because it is a powered unit and has an outdoor temp probe so that it can adjust the inside humidity levels to avoid condensation on the windows.
I don't think you have enough room on your supply plenum for a 700.
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Old 02-07-2009, 06:18 AM   #8
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Recommend whole house dehumidifier?


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The Truesteam are TOO small.
For a 1,200 sq. ft. ranch?
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Old 02-07-2009, 06:51 AM   #9
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Recommend whole house dehumidifier?


Even if he only has 8' ceilings. The amount of combustion air that wood stove will need, is more rehumidification then the Truesteam 512 can deliver.
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Old 02-07-2009, 08:09 AM   #10
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Recommend whole house dehumidifier?


A little more information-we do have 8 foot ceilings and I've been working to try to tighten up the house. Pretty much all I have left is to seal the recessed light cans in the attic and caulk around the bay window in the front. Also, the add-on furnace will be installed next to the oil burner which is walled off from the rest of the basement. I plan to make this room tight and install a grated outside air intake 10" in diameter to supply combustion air to the oil burner and wood burner. Also, the wood burner's blower will draw air from the regular house return.
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Old 02-07-2009, 08:15 AM   #11
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Recommend whole house dehumidifier?


Where is the wood burners supply going to be connected?
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Old 02-07-2009, 09:45 AM   #12
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Recommend whole house dehumidifier?


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Where is the wood burners supply going to be connected?
The hot air from the woodburner will be piped into the plenum on top of the furnace. The woodburner has an 850 CFM blower that will primarily work to get the air into the main furnace plenum. I'll then use the furnace fan to distribute air throughout the house. Basically, the woodburner distributes air just as the oil furnace does, so as long as the humidifier is installed in the plenum it will carry the humidified air. Here is the furnace just for reference:

http://www.englanderstoves.com/28-3500.html
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Old 02-07-2009, 02:05 PM   #13
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Recommend whole house dehumidifier?


Won't work.

If you tie the 2 returns together, and then try to have teh wood stove blow its air into the supply plenum, or duct while using teh furnaces blower.
One or the thers motors will burn out, from the other one over powering it.
Not to mention that one will not get the return air it should.
And can make the duct system noisey.
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Old 02-07-2009, 02:41 PM   #14
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Recommend whole house dehumidifier?


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Won't work. If you tie the 2 returns together, and then try to have teh wood stove blow its air into the supply plenum, or duct while using teh furnaces blower. One or the thers motors will burn out, from the other one over powering it. Not to mention that one will not get the return air it should. And can make the duct system noisey
I suppose in that case I'll just fabricate a filter box out of sheet metal to shroud the blower on the wood stove in a way that will allow me to mount a decent size HVAC filter on the outside. My main concern is not blowing dirty basement air through the ductwork and upstairs. Anyway, considering all of that is the Autoflow 2020 still my best bet?
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Old 02-08-2009, 01:58 AM   #15
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Recommend whole house dehumidifier?


Quote:
Originally Posted by beenthere View Post
I don't think you have enough room on your supply plenum for a 700.
I dont, so I am putting it in the return and feeding it hot water from the water heater that is about 3' away...as that is my only option.

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