Whistling/Shreiking heater

Discussion in 'Heating / Cooling Systems' started by Snowman, Oct 7, 2018.

  1. Snowman

    Snowman Member

    123
    9
    Jul 12, 2017
    Boulder, CO
    Hey Folks,
    Just got back from a campout today with our '98 Santa Fe and it was cold and rainy most of the weekend. Consequently, the heater was on overnight and it wasn't exactly quiet. When it would cycle on, the heater would make a whistling sort of sound which would last several minutes into the cycle before calming down. After the cycle ended the heater would turn on again a while later when Tstat called for heat and it would again get noisy. Any thoughts what this could be? I appreciate any help that you can provide.

    Thanks!
     
  2. Raycfe

    Raycfe Waterford Ct.

    13,642
    809
    Oct 3, 2007
    Waterford, Ct
    Blower motor bushing/bearings dry. Sometimes just a little oil on the shaft next to the bushings and move the shaft in and out will do the trick.
     
    Sjm9911 likes this.
  3. Snowman

    Snowman Member

    123
    9
    Jul 12, 2017
    Boulder, CO
    Great, thanks! Is there a manual or something online that will show me where to find the shaft or bushings/bearings?
    Thanks!
     
  4. joet

    joet Well-Known Member

    3,355
    450
    Mar 16, 2011
    Elkins WV area
    The bushings/bearings are behind the blower wheel. If you cant get to the bushings, try spraying PB Blaster on the shaft
     

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