Results 1 to 3 of 3

Thread: furnace noise

  1. #1
    Join Date
    May 2001
    Hey guys I was at a freinds house and they started there forced air natural gas furnace and it made a loud humming noise I know it wasn't the fan it sounded like it's comming from the heat exchanger the burner flames looked good.
    I have never heard this before I wounder if this is a sign of a bad heat exchanger.
    I didn't have any tools and I mainly work on commercial equipment so I don't have a huge amount of experience on furnaces and if it could be dangeres I'd like to let them know.

  2. #2
    Join Date
    Nov 2001
    east kansas
    I've heard a harmonic in cold HXers before.
    Beware of advice given by some guy on the Internet.

  3. #3
    Join Date
    May 2001
    did it go away after things warmed up?
    thanks for the reply

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts

Related Forums

Plumbing Talks | Contractor MagazineThe place where Electrical professionals meet.
Comfortech 365