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Robert J Durham

07:38PM | 09/02/03
Member Since: 09/01/03
2 lifetime posts
Bvhvac
I have an old, gas powered, gravity furnace and a new gas hot water heater in my unfinished basement. I would like to seal the basement as much as possible to prevent humid air from entering, to prevent mold, and to allow the dehumidifier to work more efficiently.

Does a gas furnace and water heater need a certain amount of fresh air in order to burn safely and efficiently?

Robert J Durham

04:51PM | 09/05/03
Member Since: 09/01/03
2 lifetime posts
Thank you; that was very helpful.

LDoyle

05:42PM | 09/05/03
Member Since: 06/03/01
327 lifetime posts
Sealing the house is not a good idea. Many have found that 'sick homes'result and mold is one such problem. What you really need is a good fresh air supply. The problem with that is the loss of heat/cool when such fresh air is introduced. The solution is an 'energy recovery ventilatior'. This brings in fresh air and the stale air is expelled while heat/cool is recovered in the process. A newer style multi speed furnace is also a good part of this process as you can then run the fan on low speed 24/7 and really get fresh air through out your house.
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