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Humidity Addition/Control

John Shea
John Shea Member Posts: 247
Are there any economical/practical methods to add moisture to the air in a steam heated home?

Detroit, MI today 20F deg 48% relative humidity

My house: as low as 28% relative humidity.

I read the very informative article in the Library on Humidity in the home, and was amazed at the amount of water the air might require based on numerous factors.
The article states that under some circumstances an average sized home could require as much as 16 gallons/day to maintain 45-50% relative humidity

The suggestions for the addition of moisture ranged from pans with cloth wicks hung on the radiators to portable devices.

It also mentions emitting steam directly from the radiators.

Wouldn't this be non-advisable, due to the constant addition of fresh(untreated) make-up water to the boiler?

Any suggestions or considerations are appreciated.


  • Matt_21
    Matt_21 Member Posts: 140
    go to

    humidity.com. nortec makes a residential electric steam humifier called the resdelux. this is for duct mounted applications but i think it has a kit to alter it to a floor mounted stand alone unit.
  • John Shea
    John Shea Member Posts: 247

    thanks matt, I'm going to check it out.

    In the meantime, I put a wet bath towel on just one radiator and raised the relative humidity from 28% to 41% in less than 24 hours. I found this pretty amazing and actually felt a comfort level difference in the house.

    I'm afraid bath towels aren't very practical, though.
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