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10-20-2021, 03:36 PM
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#1
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Senior Member
Newmar Owners Club Spartan Chassis
Join Date: Oct 2010
Location: Lake Havasu City, AZ
Posts: 1,717
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Are 2 A/C units in the 40 foot Dutch Stars enough?
I have (2) 15k A/Cs in my 40 foot Beaver and in hot weather the front A/C is workin’ pretty hard. Are 2 enough on a Dutch Star?
__________________
2019 Newmar Dutch Star 4328 K2
2017 Grand Cherokee Summit 5.7
2008 Beaver Contessa 40' Pacifica 425 Cat
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10-20-2021, 03:49 PM
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#2
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Community Moderator
Join Date: Aug 2011
Posts: 6,201
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Quote:
Originally Posted by tankcj
I have (2) 15k A/Cs in my 40 foot Beaver and in hot weather the front A/C is workin’ pretty hard. Are 2 enough on a Dutch Star?
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We have 3, however I have never needed to run more than 2. I consider the third one my “spare”.
That being said, if the windshield is pointed so the sun hits it directly, you WILL have an issue. Either put the silver stuff (reflectix) on the inside of the glass, OR put a magneshade on the outside of the windshield.
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10-20-2021, 04:00 PM
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#3
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Junior Member
Join Date: Oct 2021
Posts: 16
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If you travel in Florida you definitely need to air conditioners specially July and August.
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10-20-2021, 04:04 PM
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#4
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Senior Member
Newmar Owners Club Spartan Chassis
Join Date: Oct 2010
Location: Lake Havasu City, AZ
Posts: 1,717
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I should have been more clear. Are 2 A/Cs enough in a 40 foot DS or are 3 A/Cs necessary in the southwest?
__________________
2019 Newmar Dutch Star 4328 K2
2017 Grand Cherokee Summit 5.7
2008 Beaver Contessa 40' Pacifica 425 Cat
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10-20-2021, 04:07 PM
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#5
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Senior Member
Join Date: Aug 2011
Location: Enjoying the Western States!
Posts: 19,794
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Quote:
Originally Posted by tankcj
I should have been more clear. Are 2 A/Cs enough in a 40 foot DS or are 3 A/Cs necessary in the southwest?
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In the Southwest all in the summer? Probably 3 unless you're in the mountains of AZ in the summer. Deserts this summer were 115 deg.
We only had 2 on our 40' DS but didn't spend the summers in the S/W. Otherwise, we had absolutely no issues keeping cool.
__________________
Full-timed for 16 Years . . .
Traveled 8 yr in a 2004 Newmar Dutch Star 40' Diesel
& 8 yr in a 33' Travel Supreme 5th wheel
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10-20-2021, 04:17 PM
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#6
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Senior Member
Join Date: Jan 2021
Posts: 574
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You can never have too much A/C in the south in the Summer.
Two ACs will be losing ground on a hot Summer day in the Southern US.
__________________
Steve & Carrie
2019 London Aire 4576, Spartan K3, 605 Cummins
2022 Ranger Lariat Tremor Package
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10-20-2021, 04:32 PM
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#7
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Senior Member
Alpine Owners Club Newmar Owners Club
Join Date: Oct 2005
Location: Fremont, Ca
Posts: 1,327
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Been all over the country in our 40’ DS with two a/c’s and never had a problem. However, we don’t travel much in the southwest or east in the summer. Isn’t that one reason to own a home on wheels so that you don’t have to stay in nasty hot weather in the summer?
__________________
Jerry & Judy, Fremont, California
2017 Dutch Star 4018
Freightliner, HWH Active Air
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10-20-2021, 04:39 PM
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#8
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"Formerly Diplomat Don"
Newmar Owners Club
Join Date: Apr 2005
Location: Moorpark, Ca.
Posts: 24,123
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We live out west and hit some pretty hot temps. I tried to order a third A/C on my current 40' DS, but Newmar denied it, even though they put three on a 40' Mountain Aire. The reason I requested the upgrade, was I found our 2014 4018 DS was hard to cool down after a long driving day in hot weather. It should be noted that the coach had a LOT of black paint and was harder to cool.
With that said, it wasn't so important that it prevented us from ordering our current coach, but you can see we selected all light colors. I changed the A/C round foam rings in the ceiling, that forces air through a small slot in the wood grates. I removed the rings and added longer foam blocks, allowing the cold air to disperse through more of the grates.
I also start my A/C early, set it about 68 degrees and run the fans on high. This will keep the coach in the mid to low 70's on a 100 degree day. For long stays in the heat, we have a Magne Shade which blocks the cause of the high heat issue, the windshield.
On hot driving days, we run the dash air until 1:00 pm when we can feel that the coach is getting too warm. I start the generator and run both roof A/C units. I leave them on during check-in and right up until I plug the coach in at the campsite. This had worked pretty well.
Again, unless I intended to stay in Arizona in 110 weather for three or four months, the A/C is fine. There is another poster on here "Dutchstar411" that added a third A/C unit where the kitchen Fantastic Fan is located and made the install look very clean.
__________________
Don & Mary
2019 Newmar Dutch Star 4018 (Freightliner)
2019 Ford Raptor
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10-20-2021, 04:58 PM
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#9
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Senior Member
Ford Super Duty Owner
Join Date: Feb 2017
Location: Manhattan (Little Apple) Kansas
Posts: 2,544
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I have a Ventana LE with three AC and was one of the major selling points of the coach. We were in direct sunlight with no shade in Houston TX in July and with two AC we could get the temps down to the upper 70s but with the third AC we could get down to 68 in the hottest part of the day.
We turn on the back two during the day and the front two when we go to bed when temps are not over 100 degrees. That keeps the noise down while watching TV or sleeping. Yes, it nice having a spare also.
__________________
2020 Newmar Baystar 3005 Gas V10 - 2020 Jeep Rubicon
1280 Watts Solar - Victron MultiPlus-II Inverter 300 Amp Lithium Battery
2008 Aspect 1993 Airstream Classic
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10-20-2021, 05:14 PM
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#10
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Senior Member
Join Date: Sep 2020
Location: Athens, AL
Posts: 369
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So many post on this issue. Yes it is enough in the right conditions. No not enough if in the desert. Sorry for the crazy response, but please do your homework. It is all about where you plan to travel/spend you your time.
__________________
Lynn
2020, Dutch Star 4081, Spartan K2 Chassis
Roadmaster Black Hawk Tow Bar w/ M&G Brake System
[SIGPIC][/SIGPIC]
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10-20-2021, 05:14 PM
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#11
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Senior Member
Newmar Owners Club Spartan Chassis
Join Date: Oct 2010
Location: Lake Havasu City, AZ
Posts: 1,717
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Thanks everyone. While, I rarely camp in temps over about 102-105, sometimes we are repositioning or leaving our home in AZ when the temps are higher. Even though I have the Magne shades and use my window and patio awnings to keep the sun off the side of coach and windows, the A/Cs do sometimes struggle. While looking at DSs, I was just wondering how well the 2 A/Cs performed.
__________________
2019 Newmar Dutch Star 4328 K2
2017 Grand Cherokee Summit 5.7
2008 Beaver Contessa 40' Pacifica 425 Cat
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10-20-2021, 06:40 PM
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#12
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Senior Member
Newmar Owners Club
Join Date: Dec 2015
Location: Wellington, Florida
Posts: 1,721
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If the outside temps are in the low to mid 90's two Ac's set at 68 will keep the coach down to 70/71. Do the mod on the ceiling AC's with the foam, Day shades down, night shades up and nothing on the windshield. I did use the third AC I installed on and off at times for the two weeks while we were at Ft Myers Beach and the temps did reach 100 a couple of times. So in direct sunlight with temps in the high 90's or higher, three would be nice. Also, my wife wants the coach at 70/71 day and night. If you can be happy with temps in the mid 70's then two would be fine as well. I have been in my previous coach when the front AC went out in the beginning of our vacation, NOT FUN IN the hot months. Adding a third AC could always be an option for you so I wouldn't worry about a 40 footer DSDP.
__________________
Ted & Nancy
2015 Newmar Dutch Star 4018
2020 Jeep Wrangler Rubicon
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10-20-2021, 07:49 PM
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#13
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Senior Member
Newmar Owners Club Retired Fire Service RVer's Spartan Chassis
Join Date: Apr 2018
Posts: 381
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Quote:
Originally Posted by Dutch Star Don
We live out west and hit some pretty hot temps. I tried to order a third A/C on my current 40' DS, but Newmar denied it, even though they put three on a 40' Mountain Aire. The reason I requested the upgrade, was I found our 2014 4018 DS was hard to cool down after a long driving day in hot weather. It should be noted that the coach had a LOT of black paint and was harder to cool.
With that said, it wasn't so important that it prevented us from ordering our current coach, but you can see we selected all light colors. I changed the A/C round foam rings in the ceiling, that forces air through a small slot in the wood grates. I removed the rings and added longer foam blocks, allowing the cold air to disperse through more of the grates.
I also start my A/C early, set it about 68 degrees and run the fans on high. This will keep the coach in the mid to low 70's on a 100 degree day. For long stays in the heat, we have a Magne Shade which blocks the cause of the high heat issue, the windshield.
On hot driving days, we run the dash air until 1:00 pm when we can feel that the coach is getting too warm. I start the generator and run both roof A/C units. I leave them on during check-in and right up until I plug the coach in at the campsite. This had worked pretty well.
Again, unless I intended to stay in Arizona in 110 weather for three or four months, the A/C is fine. There is another poster on here "Dutchstar411" that added a third A/C unit where the kitchen Fantastic Fan is located and made the install look very clean.
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Great post
I too will start the gen/AC's on hot days about one hour before check in and run it until I hook up shore power. It is easier to keep cool than to cool down a hot RV.
__________________
Bylandorsea
On land:2019 Dutch Star 4326 Spartan K2 Chassis Cummins ISL9 Onan10 KW On sea:08 Meridian 490 Pilothouse 2X Cummins QSB5.9 Onan13.5KW
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