Reasons why a Heat exchanger would plug up?

Discussion in 'HVAC Heating & Cooling' started by yngwie_69, Feb 17, 2014.

  1. yngwie_69

    yngwie_69 New Member

    Joined:
    Sep 8, 2009
    Location:
    Prince Rupert, BC
    Im changing a 13 year old heat exchanger in a furnance, and was wondering why it rusted and plugged up in the first place? Its the second heat exchanger with the smaller fins.... My only guess would be if the unit was slopped backwards and condenstate built up there
     
  2. Tom Sawyer

    Tom Sawyer In the Trades

    Joined:
    Nov 29, 2010
    Location:
    Maine
    Insufficient firing rate
    Moist environment
    Excessive draft
     
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  4. Reach4

    Reach4 Well-Known Member

    Joined:
    Sep 25, 2013
    Location:
    IL
    Dust making it past the air filter? I am presuming it was the air side that clogged.
     
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