Home » Public Forums » GMCnet » Quietest Rooftop Air Conditioner
| Quietest Rooftop Air Conditioner [message #363550] |
Tue, 20 April 2021 12:20  |
LNelson
Messages: 335
Registered: December 2008
Location: Springfield, MO
Karma: 0
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Just replaced my noisy OEM A/C unit and very disappointed in the Dometic unit I bought locally. 70% of the air blows to the rear, with the remaining 30% to the main cabin area. Also more noisy than I would like. I don't wish to consider re-inventing the wheel with a mini split or some other split system. I just want a good, 13,000 btu rooftop that has most of the noise outside. These are not perfect machines, I know, but there must be one that is "the best".
Thanks to all.
Larry Nelson Springfield, MO
Ex GMC'er, then GM Busnut
now '77 Eleganza ARS WB0JOT
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| Re: Quietest Rooftop Air Conditioner [message #363559 is a reply to message #363550] |
Tue, 20 April 2021 15:42  |
lqqkatjon
Messages: 2324
Registered: October 2010
Location: St. Cloud, MN
Karma: 5
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Senior Member |
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Sadly there are lots of posts about the poor performance of the dometic brisk aire.
I hear the penguin one is better???
I have an atwood 15.5 that I am fairly happy with.
They keep changing air conditioning models and who owns what company every year. Hard to keep up.
Jon Roche
75 palm beach
EBL EFI, manny headers, Micro Level, rebuilt most of coach now.
St. Cloud, MN
http://lqqkatjon.blogspot.com/
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| Re: Quietest Rooftop Air Conditioner [message #363560 is a reply to message #363550] |
Tue, 20 April 2021 15:53 |
TR 1
Messages: 348
Registered: August 2015
Location: DFW
Karma: -7
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Senior Member |
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Best I've seen is the no longer available Atwood Air Command... Has separate fan motors for the internal and external blowers, so they can be run on different speeds which seems to make it quieter inside.
However, Dometic bought out Atwood a few years ago. And it did not make sense to me that they would market 2 different AC units for long, and sure enough, the Atwood was discontinued a year or 2 after the Dometic buyout.
Now I could be completely wrong here, but from some internet sleuthing and pure assumption on my part:
I think the newish Houghton RecPro RV air conditioners look awful similar to the old Atwood Air Command... I believe the original Atwood ACs originated in Australia... So does the new RecPro AC... The brochures on both ACs look similar... They have similar specs... Both run separate fan motors for inside and outside coils...
Again, pure conjecture on my part... But I do love my current Atwood. And if I ran it into a bridge, I would probably look into the RecPro as a replacement.
https://www.recpro.com/rv-air-conditioner-15k-with-heat-pump-non-ducted/
Now, I also believe Dometic is coming out with an inverter based RV AC called the Harrier... I would bet it would be quieter than any standard RV AC currently available, but I do not know if it is sold in the US, nor do I know the cost....
https://www.dometic.com/en-sg/sg/products/climate/air-conditioners/motorhome-and-caravan-air-conditioners/dometic-harrier-inverter-_-152020
Mark S. '73 Painted Desert,
Manny 1 Ton Front End,
Howell Injection,
Leigh Harrison 4bag and Rear Brakes,
Fort Worth, TX
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| Re: Quietest Rooftop Air Conditioner [message #363561 is a reply to message #363550] |
Tue, 20 April 2021 16:05 |
TR 1
Messages: 348
Registered: August 2015
Location: DFW
Karma: -7
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Here is a thread on another site comparing the Dometic to the Atwood:
https://olivertraveltrailers.com/forums/topic/4517-got-earplugs/
They found the Atwood much quieter, and they posted some non-scientific comparison numbers I copied below:
Dometic:
Location, Baseline measurement, Low Fan, High Fan with compressor running
Front dinette seat (phone on table) - 35, 68, 71
Rear dinette seat (phone on table) - 34, 71, 72
Left bed (phone on bed at aft end) - 31, 70, 74
Right bed (phone on bed at aft end) - 32, 70, 73
Standing under A/C (phone held at 5') - 32, 76, 78
Attwood Air Command
Location, Baseline measurement, Low Fan, High Fan with compressor running
Front dinette seat (phone on table) - 34, 58, 63
Rear dinette seat (phone on table) - 34, 58, 63
Left bed (phone on bed at aft end) - 34, 58, 63
Right bed (phone on bed at aft end) - 34, 58, 63
Standing under A/C (phone held at 5') - 34, 64, 70
Mark S. '73 Painted Desert,
Manny 1 Ton Front End,
Howell Injection,
Leigh Harrison 4bag and Rear Brakes,
Fort Worth, TX
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| [GMCnet] Re: Quietest Rooftop Air Conditioner [message #363567 is a reply to message #363566] |
Tue, 20 April 2021 22:17 |
Dave Stragand
Messages: 307
Registered: October 2017
Karma: 0
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The earlier Mach 8's had a very loud fan (part number 1472B5041) on top that they have replaced with a quieter one (part number 1472D5041). Worth checking into. There are a lot of pages on the topic on Google.
-Dave
1978 Transmode near Pittsburgh
-----Original Message-----
From: Steve Weinstock
Sent: Tuesday, April 20, 2021 8:55 PM
To: gmclist@list.gmcnet.org
Subject: [GMCnet] Re: Quietest Rooftop Air Conditioner
Larry:
I've got a Coleman Mach8. Yea - different than yours - but I'm also disappointed with the noise it makes. I've replaced the external fan and that helped quite a bit... I'm seriously considering the other modifications as discussed here:
https://www.youtube.com/watch?v=vhoTdLHkniw
Hope this helps a bit,
Steve W
--
Steve W
1973 : 23'
Southern California
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1978 Transmode (403)
Pittsburgh, PA
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| Re: Quietest Rooftop Air Conditioner [message #363583 is a reply to message #363550] |
Wed, 21 April 2021 10:47 |
Scott Nutter
Messages: 782
Registered: January 2015
Location: Houston/San Diego
Karma: 4
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Senior Member |
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Ditto on the Atwood Aircommand unit. Very quiet. I like the 3 speed motor, and the auto feature where it can automatically switch between speeds. The only drawback is that it is a high profile unit. But the efficiency and quietness makes up for the height.
Scott.
Scott Nutter
1978 Royale Center Kitchen, Patterson 455, switch pitch tranny, 3.21 final drive, Quad bags, Dave Lenzi super duty mid axle disc brakes, tankless water heater, everything Lenzi. Alex Ferrera installed MSD Atomic EFI
Houston, Texas
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