Making an rv furnace quieter

I came up with a great solution. The furnace is now dead quiet... :)

I installed 3 permanent recessed electric heaters, one in bedroom, one in bathroom and one in kitchen/living area totaling 2KW. Very quiet.
Made my own demand controller that disconnects the heaters while an appliance(s) is running which draw current above a preset level (we are 30 amps). Works like a charm and has to be my favorite mod.

RV furnaces are dang loud. Don't miss it at all! I don't think there's anything that can be done. Need to follow manufacturers spec for clearances, air flow, etc. for safety reasons.

Consider a two stage furnace that runs the fan on low when possible.

Don't be surprised when furnace keeps tripping on 'high limit'

myredracer- I like your mod. I’d ask you how it’s done but then there might be a safety kerfuffle on the forum...

Forced air heat is like warming a rock with a hair dryer. It requires noise.

I boondock mostly. I use a Propane catalytic converter (Big Buddy) Not expensive, portable, quiet.

Requires some common sense “supplied by user.”

The majority of the sound from our two furnaces comes from the large cold air returns. I lined the area behind the grills with a sound absorbent material, and even blocked off a section of the over sized grill with the same material, being careful to still exceed the manufacturer's required minimum opening area and minimize restricting air flow. The sound level reductions were significant, although I didn't take any before/after measurements.

I am pleasantly surprised with how quiet my Adventurer heater and residential AC are. I don't think either one had been used much and the first couple of times we used them they made some noises they don't make now.

The return air for both are part of the bed pedestal and made from soft materials.

The heater cabinet must be lined too but the big thing is the burner makes very little noise, even outside it is quiet.

Myredracer, We use electric heaters anytime we can and I agree they are very quiet. There are times though when we have no 120 to operate them and the gas furnace is used. You have a very good idea and if I can't quiet it down I may do the same as you.

I'm not sure what the definition of 'loud' is for a furnace. Mine is fine. Electric space heaters are much louder, and annoying.

Like many we use our furnace as backup when the electric heaters can't keep up ... if/when it kicks on we are usually cold enough that we appreciate the heat regardless of the sound. The initial firing of the furnace sounds is what wakes me - not sure how you quiet that down.

We were tent campers before RV and now TT. As long as we are comfortable with a jacket on, it's warm enough. We set the thermostat at 60 degrees and enjoy the heat. We spend most of our time outside hiking or enjoying the campfire. At night we turn the heat down to 50 and use sleeping bags to stay comfortable while we are asleep.
We seldom have hookups so we do rely on the furnace to keep the above temps. We consider the noise the price to pay to avoid getting uncomfortable.