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03-03-2021, 03:46 PM
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#43
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Senior Member
Newmar Owners Club
Join Date: Dec 2015
Location: Wellington, Florida
Posts: 1,716
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We just came back from a 5 day stay at Ft Wilderness and we're very happy with the changes we made to the AC ducts. Normally my separate but highly accurate temperature sensors are about 4 degrees off of what shows on the Dometic Controller. This time it was only off by 1 - 1.5 degrees and the coach cooled very evenly and maintained the same temps front and rear. So I can say that at least our project turned out extremely well.
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Ted & Nancy
2015 Newmar Dutch Star 4018
2020 Jeep Wrangler Rubicon
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06-24-2021, 11:17 PM
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#44
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Member
Join Date: Feb 2020
Posts: 42
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Will be testing out the added vent this weekend.
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06-24-2021, 11:22 PM
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#45
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Member
Join Date: Feb 2020
Posts: 42
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A much appreciated thread!!
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06-25-2021, 07:53 AM
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#46
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Senior Member
Join Date: Dec 2012
Posts: 266
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I also am looking at portable AC with heat pump. Amazon has a Whynter ARC-14S and other models. Whynter with dual hose is a very highly rated product. Hope this helps.
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06-25-2021, 07:58 AM
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#47
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Senior Member
Join Date: Dec 2012
Posts: 266
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That should Read: Whynter: ARC-14SH.
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06-25-2021, 08:07 AM
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#48
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Senior Member
Join Date: Dec 2015
Location: KK6YAU
Posts: 234
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Portable heat pump
Quote:
Originally Posted by DocHaley
I'll probable get booed for this post but I have never counted on an RV AC system here in Texas. Colorado? Kansas? maybe.
I have a portable heat pump that I roll out and use.
It discharges the condenser air through the floor and straight out to the below RV.
It can get the RV so cold you would think you can hang been in it.
It's a heat pump so it works just fine for heating also but I only use it in the spring and early fall for heat. I put it away for the colder months and use the heater in the RV or a Vornado for heat. It's too is unbelievable for it's quietness heating ability and size.
Anyway the only HVAC system I have ever had that I raved about was a basement unit which is rare these days in most RV's.
Doc
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Same issue here, was wondering which model DocHaley is referencing??
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06-25-2021, 09:08 AM
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#49
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Senior Member
Newmar Owners Club
Join Date: Dec 2015
Location: Wellington, Florida
Posts: 1,716
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Quote:
Originally Posted by ChasL
I also am looking at portable AC with heat pump. Amazon has a Whynter ARC-14S and other models. Whynter with dual hose is a very highly rated product. Hope this helps.
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You can also do what I did for around $1100 complete and never have to worry about carrying along a portable AC unit with hoses going out one of your RV windows, taking up space. See the thread below:
https://www.irv2.com/forums/f103/jus...dp-540051.html
__________________
Ted & Nancy
2015 Newmar Dutch Star 4018
2020 Jeep Wrangler Rubicon
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06-26-2021, 05:24 AM
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#50
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Senior Member
Newmar Owners Club
Join Date: Dec 2015
Location: Wellington, Florida
Posts: 1,716
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Amazon
https://smile.amazon.com/Conditioner.../dp/B07RJ33WF1
To the poster that asked where I got the foam strip from.
__________________
Ted & Nancy
2015 Newmar Dutch Star 4018
2020 Jeep Wrangler Rubicon
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06-27-2021, 08:22 PM
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#51
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Senior Member
Join Date: Nov 2018
Posts: 459
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Did mine today and I do notice a difference in air flow. I have a London Aire that has recessed supply and return registers 3” above the decretive grill. I found 3” foam at Home Depot. Time will tell if it really make a difference.
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Scott R
2019 London Aire 4543 SL605 FCCC
2023 Jeep Grand Cherokee Summit
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06-28-2021, 03:55 PM
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#52
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Senior Member
Join Date: May 2018
Posts: 1,715
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Quote:
Originally Posted by JoeAnt
To those folks that converted there AC covers to white. Can you tell me if it really helped. I have thought about doing this but I admit I am skeptical that it will help.
Thanks
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Joe, since the AC's work by REMOVING heat from the incoming air and then sending it back into the coach, anything you can do to have cooler air going into the condenser is going to help as that process is only going to drop the temp just so much.
Dark colors (not just black) make tremendous differences in heat absorption. Last year, with the sun beating on the side of my coach, I took used my temp gun to measure the temps on different colors within inches of each other on the side. My darkest color is a metallic maroon...the lightest is a cream. The ambient temp was in the low 90's. The maroon avg temp on the gun was 181.8 degrees F. The cream, just inches away, was 143.6 Average. So, nearly 40 degrees difference in temp. Imagine black with direct sun on your AC cover vs white and what that does to the temps under that cover affecting what the condenser is trying to remove heat from.
Everything on my roof is now white. I installed white vent covers over the vent fans, my AC covers are white, and I had to replace my Winegard powered antenna head, so got the white vs the old one which was black (heat can greatly affect life of electronics.)
A lighter colored coach will be easier to keep cool as it's not absorbing all that heat and transferring it into the coach. Something to contemplate when purchasing a coach.
I have enjoyed this thread and am going to work on the foam mod. Great tips!
__________________
"Second star to the right and straight on 'til morning"
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06-28-2021, 06:00 PM
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#53
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"Formerly Diplomat Don"
Newmar Owners Club
Join Date: Apr 2005
Location: Moorpark, Ca.
Posts: 23,922
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Quote:
Originally Posted by NCC-1701A
Joe, since the AC's work by REMOVING heat from the incoming air and then sending it back into the coach, anything you can do to have cooler air going into the condenser is going to help as that process is only going to drop the temp just so much.
Dark colors (not just black) make tremendous differences in heat absorption. Last year, with the sun beating on the side of my coach, I took used my temp gun to measure the temps on different colors within inches of each other on the side. My darkest color is a metallic maroon...the lightest is a cream. The ambient temp was in the low 90's. The maroon avg temp on the gun was 181.8 degrees F. The cream, just inches away, was 143.6 Average. So, nearly 40 degrees difference in temp. Imagine black with direct sun on your AC cover vs white and what that does to the temps under that cover affecting what the condenser is trying to remove heat from.
Everything on my roof is now white. I installed white vent covers over the vent fans, my AC covers are white, and I had to replace my Winegard powered antenna head, so got the white vs the old one which was black (heat can greatly affect life of electronics.)
A lighter colored coach will be easier to keep cool as it's not absorbing all that heat and transferring it into the coach. Something to contemplate when purchasing a coach.
I have enjoyed this thread and am going to work on the foam mod. Great tips!
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When we ordered our 2019 DS, we ordered the 2019 Mountain Aire colors. They're almost exactly like yours. The cream along the roof is soooo much cooler. I also changed everything on the roof to white. We bought a Magna Shade, but really haven't put it to the test yet.
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Don & Mary
2019 Newmar Dutch Star 4018 (Freightliner)
2019 Ford Raptor
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07-04-2021, 07:21 AM
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#54
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Senior Member
Join Date: Nov 2018
Posts: 459
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Quote:
Originally Posted by Sukutto
A much appreciated thread!!
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Well I bought to registers, the exact ones used by Newmar with the deep collar to install one in the front and then one in the master closet.
My bad for not measuring the duct before hand, both ducts only go about 6” past the last register drop. The front one does not even make it past the decorative ceiling drop down. :(
__________________
Scott R
2019 London Aire 4543 SL605 FCCC
2023 Jeep Grand Cherokee Summit
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07-05-2021, 06:15 PM
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#55
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Senior Member
Join Date: Jan 2017
Location: Titusville, FL
Posts: 5,160
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Quote:
Originally Posted by NCC-1701A
J
Everything on my roof is now white. I installed white vent covers over the vent fans, my AC covers are white, and I had to replace my Winegard powered antenna head, so got the white vs the old one which was black (heat can greatly affect life of electronics.)
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Did you replace the AC covers with white ones or can you just paint the black covers white and accomplish the same goal?
__________________
When seconds count, the police are only minutes away.
2023 Grand Design 2600RB, 2022 F-350 King Ranch tow vehicle, Titusville, FL when not on the road
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07-05-2021, 08:10 PM
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#56
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Member
Join Date: Feb 2020
Posts: 42
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Quote:
Originally Posted by sramer
Well I bought to registers, the exact ones used by Newmar with the deep collar to install one in the front and then one in the master closet.
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I also bought the register with the deep collar. There was still 3/4in. to the ducting. I used ducting tape, front and backfilled with expanding insulating foam and shaped.
Quote:
Originally Posted by sramer
My bad for not measuring the duct before hand, both ducts only go about 6” past the last register drop. The front one does not even make it past the decorative ceiling drop down. :(
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Wow...Our front ducting continued all the way to the front cabinets! This weekends plan was to add one in the master closet.
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