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09-23-2018, 06:24 PM
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#1
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Member
Brand: Thor Motor Coach
State: Massachusetts
Posts: 41
THOR #11935
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Mirimar 35.2 loud furnace under bed
Have a 2016 35.2 mirimar rv the furnace is under bed when it runs sounds like a jet airplane any tips on queting unite insulation something ?
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09-26-2018, 05:18 PM
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#2
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Senior Member
Brand: Thor Motor Coach
Model: 2017 Axis 25.4
State: Arkansas
Posts: 2,669
THOR #12231
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Yes, I insulated mine some but it still has a roar to it - but it helped some. The fan noise is much quieter. So in the dinning area its not bad to watch TV but in the bedroom you can still hear the drone of the heater (My heater kinda close to the bedroom but really its under my fridge). I dont think there is much you can do about the drone but it helped some.
I was going to do an extensive posting on this subject soon.... maybe today..... so look for it soon.
Let us know if you figure out how to quiet the drone down.
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2017 Axis / 25.4: Big Foot Levelers, Aims 1200 Watt inverter, Ceramic Window Tint, Full River AGM 6V batteries, Front Hellwig Sway bar / Rear Track Arm, Safe T Plus Steering Stabilizer, PD 4655 converter, Hard Wired Surge Guard, WEboost + WiFi Ranger, LED Headlights/Driving lights, TPMS, Surge tank, Tornado flush, Viair Compressor
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09-26-2018, 05:40 PM
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#3
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Member
Brand: Thor Motor Coach
State: Massachusetts
Posts: 41
THOR #11935
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I noticed my furnace is right underneath my bed and there’s an access door I got somebody did not have on all the way so I insulated it probably gonna put a rubber mat underneath the mattress and hope for the best
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09-26-2018, 05:58 PM
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#4
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Senior Member
Brand: Thor Motor Coach
Model: 2017 Axis 25.4
State: Arkansas
Posts: 2,669
THOR #12231
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Yep, insulate it the best you can - but I would not expect to get ride of that drone. Make it hard to sleep in the RV for sure (Im a light sleeper). The only way to eliminate the sound from the bedroom is to relocate you heater to diff part of the RV and thats not feasible.
I wonder how the $500,000+ RV's do it? That would stink if they have the same problem we have with drone heater noise.
Perhaps they just used the heated floors to heat the entire RV? I have seen some with the aqua heaters or electic coils in the floor.
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2017 Axis / 25.4: Big Foot Levelers, Aims 1200 Watt inverter, Ceramic Window Tint, Full River AGM 6V batteries, Front Hellwig Sway bar / Rear Track Arm, Safe T Plus Steering Stabilizer, PD 4655 converter, Hard Wired Surge Guard, WEboost + WiFi Ranger, LED Headlights/Driving lights, TPMS, Surge tank, Tornado flush, Viair Compressor
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09-26-2018, 07:06 PM
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#5
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Senior Member
Brand: Thor Motor Coach
Model: Hurricane 31S
State: Texas
Posts: 4,157
THOR #6411
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Quote:
Originally Posted by Long & Winding road
Yep, insulate it the best you can - but I would not expect to get ride of that drone. Make it hard to sleep in the RV for sure (Im a light sleeper). The only way to eliminate the sound from the bedroom is to relocate you heater to diff part of the RV and that's not feasible.
I wonder how the $500,000+ RV's do it? That would stink if they have the same problem we have with drone heater noise.
Perhaps they just used the heated floors to heat the entire RV? I have seen some with the aqua heaters or electric coils in the floor.
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Aqua-Hot systems have three to five zones of heat and not just the floors. Heat is supplied by a diesel burner or propane burner and an electric heating unit. Forced air systems require two blowers (one for burner air and one for coach air) which are noisy by design in the higher heat options. There is an alternative the Suburban SH series of propane heater are significantly quieter than the Dometics in my opinion.
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Jim & Roy Davis
2016 Hurricane 31S
1961 Rampside in tow
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09-27-2018, 11:01 PM
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#6
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Senior Member
Brand: Thor Motor Coach
Model: 2017 Axis 25.4
State: Arkansas
Posts: 2,669
THOR #12231
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Thats why I like my small electic heater for the campgrounds.... very quiet. You would think they would locaton the heaters in a better spot and insulate them better for sound (at least on the RV's with more storage space and higher price). If they could put them in one of the storage compartments at least most of the sound would be below the rv and not in it. Kinda like the generator sound.
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2017 Axis / 25.4: Big Foot Levelers, Aims 1200 Watt inverter, Ceramic Window Tint, Full River AGM 6V batteries, Front Hellwig Sway bar / Rear Track Arm, Safe T Plus Steering Stabilizer, PD 4655 converter, Hard Wired Surge Guard, WEboost + WiFi Ranger, LED Headlights/Driving lights, TPMS, Surge tank, Tornado flush, Viair Compressor
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09-27-2018, 11:12 PM
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#7
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Member
Brand: Thor Motor Coach
State: Massachusetts
Posts: 41
THOR #11935
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Agree I’ll post after I install rubber padding unde mattress
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09-29-2018, 01:06 PM
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#8
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Senior Member
Brand: Thor Motor Coach
Model: 2017 Axis 25.4
State: Arkansas
Posts: 2,669
THOR #12231
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I would also try to surround the heater and the cold air intake with some sort of sound absorbing insulation (within reason - needs to be fire resistant and install in such a way so its not a fire hazzard or restrict air flow).
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2017 Axis / 25.4: Big Foot Levelers, Aims 1200 Watt inverter, Ceramic Window Tint, Full River AGM 6V batteries, Front Hellwig Sway bar / Rear Track Arm, Safe T Plus Steering Stabilizer, PD 4655 converter, Hard Wired Surge Guard, WEboost + WiFi Ranger, LED Headlights/Driving lights, TPMS, Surge tank, Tornado flush, Viair Compressor
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09-29-2018, 01:22 PM
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#9
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Senior Member
Brand: Thor Motor Coach
Model: SOB 2014 Meridian 36M
State: Washington
Posts: 981
THOR #7205
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Our 1998 Thor furnace had bad bearings/bushings in the motor. Every time it started it squealed. After warming up a bit it would quiet down. That thing would raise the dead! We used electric heaters a much as possible until we had the motor replaced.
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Pat & Becky & now Katie
Wenatchee, WA
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09-29-2018, 03:54 PM
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#10
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Member
Brand: Thor Motor Coach
Model: Miramar 35.2
State: Illinois
Posts: 66
THOR #7085
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Quote:
Originally Posted by jplacz2000
Have a 2016 35.2 miramar rv the furnace is under bed when it runs sounds like a jet airplane any tips on quieting unite insulation something ?
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we have the same, but newer coach. We actually had the Bedroom duct moved to project more heat into the living area. It was heating the sliding door originally! And yes, it is LOUD
Michael
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09-29-2018, 08:08 PM
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#11
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Senior Member
Brand: Thor Motor Coach
Model: Challenger 37TB
State: Kentucky
Posts: 1,032
THOR #1020
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Best way to improve hot air distribution is with heat registers that have sliding controls. The ones I bought do a great job and are nice looking.
These are from Amazon Decor Grates
4.6 out of 5 stars**142Reviews
Decor Grates SPH210-RB Scroll Plated Register, 2-Inch by 10-Inch, Rubbed Bronze
PS. Doesn't help the noisy furnace though. At least you tell when it is running. :')
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US Army Retired - Loving The Road Trip
Challenger 37TB
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