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Posted by Stormin Mormon on March 27, 2008, 10:34 am
> Please tell us about your heating system. Gas, oil? Radiators?
> Forced air?
It is a forced air system. I had it installed about 7 years ago. It
is in the attic. Central heat and air. The house is a one story
wood house built in 1950 here in Atlanta Ga. Atlanta is pretty humid
in the summer, but not in the winter.
CY: yes, I'd have to guess, GA can be humid.
> Since dehum dump the heat into the room, they are a heat gain,
> as well as using a bunch of electric.
I have had lots of warning about the electricity. Just how bad is
it? Is it worse than a window unit AC for example?
CY: Typically dehum run 1/5 to 1/4 HP compressor. I'm not sure what the
running amps is, probably 4 to 5 amps. So, 600 to 700 watts while it's
running. About the same as a window AC. So, for that matter, might make more
sense to run a window AC if you need the cooling.
If I do add a
denum to my central heat and air, will it increase my electric bill in
the summer by 50% or 100% or what?
CY: No way for us to be sure. Figure about 600 watts while it's running.
> Plastic in the crawl space. Just to mention the obvious. If the plastic is
> on the ground, then put the dehum on top of the plastic may help. If the
> plastic is stapled to the bottom of the floor, that's different.
The plastic is on the ground. I put it out myself several years ago.
At the time someone told me you are supposed to leave 10% of the
ground uncovered. I didn't understand why but I did it that way. I
think I will go back and put down more plastic and make sure 100% of
the ground is covered unless someone here tells me you are not
supposed to.
CY: I havn't heard either way or the other. I'd want to cover all the
ground.
> The last time I had some serious allergy problems, I had to take apart the
> AC, clean it out and sanitize it.
I am going to have someone who knows what they are doing do that.
Also, I was told I need to replace the plenums with metal plenums.
The ones there now feel like some kind of heavy cardboard and I was
told that is not good.
CY: Metal, with insulation is good. Foam board, for example. Don't want to
absorb a bunch of heat from the attic. You do have attic venting, I hope?
Maybe electric vent, set to a temperature switch?
> If you have central AC, may be long past time to have the indoor coil
> taken out,
> and cleaned. Not a job for a home owner.
The system is 7 years old. How often should that be done?
CY: Totally depends on the situation. Dust level, run time, etc. Might
easily be time.
>Please also look under your
> refrigerator. Open the doors, and snap off the "kick plate". Often they
> have a tray for the condensate. This tray lifts and pulls out. Scrub it,
> and
> sanitize with a blast of clorox bleach.
Will do.
CY: If your fridge is "frost free" it will have a pan some where. Some are
behind the kick plate, and others are on the back, welded to the top of the
compressor. Any case, they do grow algae and crud.
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