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08-29-2018, 03:15 AM
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#1
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Junior Member
Brand: Thor Motor Coach
State: Georgia
Posts: 4
THOR #12890
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Loud Roof Mounted AC
I’m new to RV-ing. Recently acquired a 2015 Four Winds 31W. Inside the RV the AC is very loud even on low. The unit cools great, but the sound is almost too much. Any ideas on how to reduce the decibels?
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08-29-2018, 03:53 AM
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#2
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Senior Member
Brand: Thor Motor Coach
Model: Hurricane 29M
State: Texas
Posts: 2,719
THOR #11781
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They are always loud.
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Lt Keefer
2018 Hurricane 29M
CHF, Saf-T-Plus, SumoSprings
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08-29-2018, 05:06 AM
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#3
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Senior Member
Brand: Thor Motor Coach
Model: Four Winds 31E (2019)
State: California
Posts: 249
THOR #12270
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Quote:
Originally Posted by Gnorman
Any ideas on how to reduce the decibels?
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earplugs? 
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08-29-2018, 11:49 AM
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#4
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Site Team
Brand: Crossroads
Model: CF32BL
State: Mississippi
Posts: 1,030
THOR #121
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I take my hearing aids out, Double win than I can not also hear DW
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Frank and Janet Henn
2008 CrossRoads CF32Bl pushing a 2007 Dodge 2500
Traveling with Hoover, Rainbow and Sunshine
The wonder Schnauzers 
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08-29-2018, 12:01 PM
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#5
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Senior Member
Brand: Thor Motor Coach
Model: THOR Chateua 35SF
State: Florida
Posts: 5,850
THOR #11130
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"The unit cools great"...this is the best part of your post!! The noise is sweet music if the cooling is great!! Many would put up with a "pots and pans" band with kids singing just to have great cooling!!
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Now an SOB
Traded Thor for Melbourne Prestige 24NP
2018 THOR Chateau 35SF
Two Labs, Bugsie & Blondie
Blondie passed in 2020 at 5 to Leukemia
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08-29-2018, 12:39 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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They are loud but not unbearable loud. I can still watch TV but if someone is in the bedroom and im in the captains chair I may not understand what they are saying unless they speak up (But not yelling).
Maybe go to your local RV dealing and look at a new model with the same AC as your. Have the Sales person crank it up and see if its about the same noise level? Or if you know someone with an RV maybe listen to theirs?
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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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08-29-2018, 12:45 PM
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#7
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Senior Member
Brand: Thor Motor Coach
Model: THOR Chateua 35SF
State: Florida
Posts: 5,850
THOR #11130
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^^ditto^^ They are loud but comfortably so. You may have an air restriction going on or the fan motor rubbing the shroud.
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Now an SOB
Traded Thor for Melbourne Prestige 24NP
2018 THOR Chateau 35SF
Two Labs, Bugsie & Blondie
Blondie passed in 2020 at 5 to Leukemia
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08-29-2018, 01:30 PM
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#8
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Senior Member
Brand: Thor Motor Coach
Model: Gemini 24TX (Formerly)
State: California
Posts: 1,459
THOR #5821
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Unfortunately they are all kind of on the noisy side. There just isn't much insulation between the AC and the living quarters, plus they need to move a lot of air, both to cool and to help prevent the unit from freezing up. We tend to run the rear one, when we are in front, and the front one, when we are in the bedroom area.
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08-29-2018, 02:41 PM
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#9
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Axis/Vegas Enthusiast
Brand: Thor Motor Coach
Model: Axis 24.4
State: Michigan
Posts: 9,837
THOR #1150
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We can watch TV but find ourselves varying the TV's volume as the A/C cycles ! LOL
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08-29-2018, 04:24 PM
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#10
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Senior Member
Brand: Thor Motor Coach
Model: Windsport 27K
State: North Carolina
Posts: 343
THOR #11007
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That was one of the first things we noticed about our "new" 2015 Windsport - the AC is louder inside than out. From outside, you can barely hear it. Inside? Irritating at times, but not to the point we'll turn it off on a 90 degree day... ;-)
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08-29-2018, 05:32 PM
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#11
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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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Quote:
Originally Posted by Gnorman
Any ideas on how to reduce the decibels?
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I was going to try using some household duct insulaton (Cut to fit then spray some adhesive on the back and stick everywhere I can without restricting airflow) to absorb the sound some. I have not tried it yet but it helped with my heater in the RV. Very noticable difference on the heater.
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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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