With the usual type of furnace, new filters should be installed each fall, and 
depending on the situation, possibly mid heating season.  Visually inspect 
cold air returns, especially if floor grates, on frequent basis.
Bruce in Eden.

------- Original Message -------
From    : Michalina Wasung Townshend Treasurer[mailto:[log in to unmask]]
Sent    : 12/24/2007 12:26:35 PM
To      : [log in to unmask]
Cc      : 
Subject : RE: Building air duct cleaning

 Would any of you who work in an old(ish)building with hot air heat let me 
know how often (if at all) the hot air ducts, cold air returns, furnaces (air 
part) get cleaned?  Also furnace filter replacement or cleaning?
Thank you ever so much, Miki - Townshend Treasurer

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