Forum Discussion

Bluebeard's avatar
Bluebeard
Explorer
Apr 28, 2016

Noisy Furnace

My 2001 Arctic Fox 5er came with a Suburban SF 30F furnace and when it runs, the fan is very noisy. I am contemplating insulating the unit to make it quieter. I noticed that Suburban now makes a "quiet" version of the same furnace. Anyone have any experience between noise levels of the quiet vs the normal? Or perhaps insulating the old one vs the "quiet" one?
  • RV_daytrader's avatar
    RV_daytrader
    Explorer
    Apr 28, 2016
    SCVJeff wrote:
    I have NEVER seen a sleeve bearing that once is sticky or noisy be rescued by oil. At that points its simply a bandaid


    But if he oils the bearings and it gets quiet, then he knows that replacing the motor will make it quiet...a lot cheaper than buying a new furnace.
  • SCVJeff's avatar
    SCVJeff
    Explorer
    Apr 28, 2016
    I have NEVER seen a sleeve bearing that once is sticky or noisy be rescued by oil. At that points its simply a bandaid
  • Bluebeard's avatar
    Bluebeard
    Explorer
    Apr 28, 2016
    The camper is new to us, so don't know history. I called Suburban, and woman wouldn't give me any idea of how quiet it is. She said they were buying motors from another newer supplier. She suggested I go to a deealership and listen to a camper that has the quiet one installed.
  • j-d's avatar
    j-d
    Explorer II
    Apr 28, 2016
    Always been noisy? Or has it gotten progressively noisy over time? If over time, motor bearings are a possibility. So are an obstruction in the air supply/exhaust ducting OR a nest in the blower itself.
  • pdogg's avatar
    pdogg
    Explorer
    Apr 28, 2016
    sometimes replacing the motor will quiet it down.. The Sleeve bearings dry out over time and start to whine.
  • time2roll's avatar
    time2roll
    Nomad
    Apr 28, 2016
    If the "quiet" furnace is a two speed unit you will have better results with a swap.
  • old_guy's avatar
    old_guy
    Explorer
    Apr 28, 2016
    what ever you do to reduce the noise, do not block the cold air intake in the trailer

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