Furnace blower noise

[edsland]

I have a 2009 Keystone Sprinter 27rls tt that we where camping in last night, temps dipped to upper 30's so I had the furnace on. Everything was fine then all of a sudden the blower still blew hot air but made a loud almost screeching noise. Does the blower have some type of bearings that can be changed? Luckily I had some electric heaters that I used the rest of the night and stayed plenty warm.

[RoyB]

My propane furnace blower motor is so loud in my OFF-ROAD POPUP we don't use it much anymore. It is my absolute final PLAN B keeping warm hehe... It will wake me up in the middle of night when it kicks in... Then when we do use it is way TOO MUCH HEAT for our small footprint trailer. Very hard to regulate the heat from it.

I have described the noise like siting in the back roll seats of a MD80 Jet Plane listening to the loud GRRRRRRR Noise of the jet engine which is probably just inches away from your head.

I have never heard a screeching noise coming from my Blower however...

Roy Ken

[mtofell1]

hddecker wrote:
Just one more example of our throw away society. I remember the days when you could still rebuild stuff and the parts did't cost you as much as the new product.

I had a $500 dishwasher and they want $400 for new racks. They had a $900 dishwaher on sale for $500. Gee what should I do.

So true..... things are just being made cheaper and cheaper. Most standard appliances over 5 years old aren't worth repairing or attempting to repair. RV appliances are definitely included in this. I suppose an RV furnace is a costly enough item that it may be worth looking in to.

I do home inspections for work and it's amazing to see how quickly things are failing. Garbage disposals, dishwashers, water heaters, faucets and similar items in cheap track houses routinely fail before 10 years. There is still some decent quality out there but it costs you. Unfortunately, the quality of components in RVs is at or below the cheapest houses. I'm constantly amazed at the junk in my 2013 TT.

I suppose this is the reason I was so surprised at how little it cost 🙂

[hddecker]

Doug33 wrote:

hddecker wrote:
Just one more example of our throw away society. I remember the days when you could still rebuild stuff and the parts did't cost you as much as the new product.

I had a $500 dishwasher and they want $400 for new racks. They had a $900 dishwaher on sale for $500. Gee what should I do.

wash dishes by hand? 😉

I don't do windows and I don't do dishes.:D

[Doug33]

hddecker wrote:
Just one more example of our throw away society. I remember the days when you could still rebuild stuff and the parts did't cost you as much as the new product.

I had a $500 dishwasher and they want $400 for new racks. They had a $900 dishwaher on sale for $500. Gee what should I do.

wash dishes by hand? 😉

[hddecker]

Just one more example of our throw away society. I remember the days when you could still rebuild stuff and the parts did't cost you as much as the new product.

I had a $500 dishwasher and they want $400 for new racks. They had a $900 dishwaher on sale for $500. Gee what should I do.

[RooDude09]

Our 2010 Keystone hideout does the exact same thing. It seems to happen at start up and as it's about to shut off. I stuck my fingers in the louvers and touched the cover and it went away. It seemed to have to do with the cover. Haven't really been using the heater much so not sure if it still happens. I think I tried tightening the four screws on the cover of the furnace. This is a terrible and annoying noise hope it helps!

[Doug33]

My experience with furnaces is that they are all NOISY, even if there is nothing wrong with them. The furnace coming on in the middle of the night has woken me up many times.

[Old-Biscuit]

Motors use sleeved bushing..no bearings
Screeching noise:
could be worn bushing,
could be dirty wheel(s) throwing them out of balance,
could be loose blower wheel(s) (either room air and/or combustion wheel),
could even be a bad main burner assembly (can screech due to disrupted gas flow thru assembly)

Need to pull furnace and inspect

[old_guy]

I have worked on many furnaces in my day and I have yet to see one with bearings you can lube. many have tried but they will not last very long. you have to replace the entire motor and they are not cheap believe me.

[darsben]

they may use the same but I do not know off the top of my head what you have in your rig.
I am old and can just remember what I own

[edsland]

We have the trailer back in storage and the paperwork with all the info is in the trailer. We are camping next weekend so I could look then to see what brand. I just thought Keystone would use the same across the board.

[darsben]

WHAT BRAND HEATER?
USUALLY THE MOTOR NEEDS CHANGING.

There are videos that show how to change the motor but I cannot direct you to the right one because you have not provided needed information.

[Dr_Quick]

I would think that with the age of the furnace, a bearing would not go bad that quick.
I believe that the furnaces us a single motor for both the air blower and the combustion air too. These are held in place by "allen" screws, and wondering if one screw got loose causing blower wheel to move and hit side of enclosure that caused noise.

I found out a lot about RV furnaces when a Mud Dabber got into the combustion blower section of the furnace, and the nest came loose and jammed up the blowers. On a cold morning I had to take the furnace out and disassemble it on the table to remove the nest.
Furnace had always vibrated a lot before I made repair, and after that it ran nice and smooth. The nest had been on the blower wheel before it came loose, which made it go off balance and caused the vibration.