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Old 05-16-2022, 09:11 AM   #1
Junior Member
Join Date: Jun 2020
Posts: 16
High pitch frequency heater/blower

Just purchased a new 2022 FR Rockwood Ultra-Lite 2606WS TT. I have been going through it and running everything to make sure it's working. One thing I notice is when the heat is on there's a high pitch frequency that is very annoying. You hear it on the inside and outside.

I removed the wooden vent to the heater/blower and when I removed the metal plate that directs the forced air into the ducts, the noise went away but the air just blows straight through. When I put the metal plate back on to force the air through the ducts, the annoying noise starts up again.

Anyone ever have this problem?

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Old 05-16-2022, 09:38 AM   #2
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Join Date: Oct 2014
Posts: 15,300
It is possible that the heat ducts/vents are blocked or crushed. This could cause an air leak causing the noise or extra back pressure on the blower causing the noise. Try checking the ducts. Something like the link below should help. These are very useful in RVs.

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Old 07-05-2023, 09:40 PM   #3
Join Date: Jul 2013
Posts: 43
Sorry, older post, but I have a 2023 2606ws, manufactured last July and the same high pitch frequency noise from the furnace; almost sounds like a jet engine? I don't notice it as much inside, but all vents blow and it seems to work; kept me warm in the teens. I assume it's the acoustics of how the camper is built. Snowdog50, did you ever find a problem? Mine still has warranty left through August and I know others have had similar posts, but never any solid answers or issues reported. The scope is a good idea, I have been looking at those for other projects/repairs as well.
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