Noisy Furnace

[Bluebeard]

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]

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]

I have NEVER seen a sleeve bearing that once is sticky or noisy be rescued by oil. At that points its simply a bandaid

[midnightsadie]

so pull it out lube the fan bearings, and give it a try.

[Bluebeard]

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]

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]

sometimes replacing the motor will quiet it down.. The Sleeve bearings dry out over time and start to whine.

[time2roll]

If the "quiet" furnace is a two speed unit you will have better results with a swap.

[SCVJeff]

Call them up and see if there is an upgrade kit

[old_guy]

what ever you do to reduce the noise, do not block the cold air intake in the trailer