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12-07-2017, 03:32 PM
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#1
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Montana Fan
Join Date: Aug 2017
Location: Vineland
Posts: 135
M.O.C. #20374
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Heat Pump
How do you know if one of the AC units is also a heat pump?
We were told our 2018 3731 FL was equipped with a a heat pump.
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12-07-2017, 04:14 PM
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#2
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Established Member
Join Date: May 2017
Location: Full Time
Posts: 18
M.O.C. #19919
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If you have a heat pump for 1 of your units, you should have a heat pump setting for 1 of your units on your thermostat.
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12-07-2017, 05:11 PM
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#3
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Montana Fan
Join Date: Aug 2017
Location: Vineland
Posts: 135
M.O.C. #20374
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Nothing but furnace and cool on both so apparently salesman didn’t know what he was talking about.
Thanks for your help.
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12-07-2017, 05:28 PM
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#4
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Montana Fan
Join Date: Dec 2015
Location: Mount Shasta
Posts: 107
M.O.C. #18143
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2018 units are supposed to have a heat pump. On ours (3810MS), it is the rear AC unit and when you scroll through the heat/cooling/fan settings, the last two are furnace and heat pump. In yours since it is a FL, I would suspect that it would be in the front one. Our front one does not have this feature.
__________________
2017 Ram 3500, Aisen Trans, Short bed Crew Cab. B&W OEM Slider,
2018 Montana 3810MS
Russ & Nancy Porterfield
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12-07-2017, 08:26 PM
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#5
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Montana Fan
Join Date: Aug 2017
Location: Vineland
Posts: 135
M.O.C. #20374
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Neither rear or front thermostats have anything on them that says heat pump.
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09-29-2018, 10:54 AM
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#6
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Established Member
Join Date: Sep 2018
Location: Port Rowan
Posts: 18
M.O.C. #22747
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Ours is a 2018, 3730fl and our heat pump is on the bedroom thermostat.
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09-29-2018, 11:54 AM
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#7
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Montana Master
Join Date: Jan 2018
Location: Thornville
Posts: 546
M.O.C. #21110
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Quote:
Originally Posted by kathdear
Ours is a 2018, 3730fl and our heat pump is on the bedroom thermostat.
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Your heat pump is located in the MAIN a/c unit, whether it is the front or rear unit depends on model of your specific unit. Both thermostats will have it listed, but only 1 will operate the heat pump, and that will be the main a/c unit thermostat.
To visually tell the difference, you can look from outside onto roof, and the TALLER/BIGGER a/c unit will be the one with the heat pump in it. At least thats how it is on our coach.
__________________
Darwin & Carla
2018.5 3701LK Montana
2022 3500HD Denali Duramax SRW
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10-01-2018, 07:45 AM
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#8
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Established Member
Join Date: Nov 2017
Location: Lambertville
Posts: 18
M.O.C. #20893
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Greetings, my heat pump is on kit/dining t-stat in our 2018 3560RL. I just want to use furnace only to take off the chill (setting on t-stat is furnace) but heat pump comes on too? Why? Thanks.
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10-01-2018, 06:00 PM
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#9
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Montana Master
Join Date: Jan 2018
Location: Thornville
Posts: 546
M.O.C. #21110
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Quote:
Originally Posted by EverywhereMan
Greetings, my heat pump is on kit/dining t-stat in our 2018 3560RL. I just want to use furnace only to take off the chill (setting on t-stat is furnace) but heat pump comes on too? Why? Thanks.
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Im not 100% certain, but Im thinking I've read somewhere on here about the fan setting. If its on "auto" your heat pump runs with furnace, if its on "high" the heat pump wont run with furnace...or something like that scenario.
Again not 100% certain how it was worded.
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Darwin & Carla
2018.5 3701LK Montana
2022 3500HD Denali Duramax SRW
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10-02-2018, 09:10 AM
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#10
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Established Member
Join Date: Nov 2017
Location: Lambertville
Posts: 18
M.O.C. #20893
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thanks, CarWin, ill at that
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10-02-2018, 10:53 AM
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#11
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Montana Master
Join Date: May 2011
Location: Hixson
Posts: 3,436
M.O.C. #11397
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Quote:
Originally Posted by CarWin
Im not 100% certain, but Im thinking I've read somewhere on here about the fan setting. If its on "auto" your heat pump runs with furnace, if its on "high" the heat pump wont run with furnace...or something like that scenario.
Again not 100% certain how it was worded.
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You may have read that but it's not true about mine. The HP only runs when thermostat is on the HP mode and furnace only runs when on furnace mode. The "LOW", "HIGH", and "AUTO" only applies to fan speed on mine. I never take mine off AUTO and everything works fine.
__________________
2018.5 Montana 3791RD
Full Timers 9/1/2010 through 1/16/2020.
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12-07-2017, 06:09 PM
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#12
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Montana Master
Join Date: Feb 2004
Location: Brandon
Posts: 3,944
M.O.C. #1034
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Our 2017 has heat pump feature on the rear unit so I would think yours should be the same.
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Darwin & Maureen DeBackere
Minnedosa, Manitoba, Canada
2011/3500/Silverado/4x4/DRW/Duramax 
2017/3721RL/Legacy Pkg./Pressure-Pro 
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12-07-2017, 06:26 PM
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#13
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Montana Master
Join Date: May 2011
Location: Hixson
Posts: 3,436
M.O.C. #11397
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Our 1 heat pump is on the rear unit. It shows up on the thermostat after furnace.
One member yesterday said his High Country has 2 heat pumps. Ours is also wired for a 3rd AC but has no thermostat for it.
__________________
2018.5 Montana 3791RD
Full Timers 9/1/2010 through 1/16/2020.
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12-07-2017, 08:36 PM
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#14
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Montana Master
Join Date: Sep 2017
Location: Tacoma
Posts: 1,567
M.O.C. #20475
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The heat pump will be in the main A\C unit only the front unit is A\C only if you scroll through the t\stat after furnace should be heat pump.
Bob & Carol
Washington St
2017 352RL 2008 Dodge 3500 DRW crew cab 4x4 LB 6.7L
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12-08-2017, 09:40 AM
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#15
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Montana Master
Join Date: Oct 2017
Location: Bee Branch
Posts: 2,620
M.O.C. #20693
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Our High Country 381TH came with heat pump feature on BOTH A/C units. Not sure if that was a special order or not. That's a great thing for us as I don't like to run the gas furnace and we don't camp in the extreme cold anyway. Besides the wife cuddles tighter when it is a bit cold in the bedroom........
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James & Irene Wilson
Bee Branch, AR.
2017 Ram 1 ton diesel duallyCrew Cab/Long Bed
2018 Montana High Country 381TH Garage Full of Toys
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12-09-2017, 05:22 AM
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#16
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Montana Master
Join Date: Sep 2017
Location: Willis
Posts: 896
M.O.C. #20587
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On our 3791RD I've noticed that both thermostats have a heat pump setting. Where we are currently and in our driveway at home, the outside temps are too cold and the humidity is too high to get much from a heat pump. For the best from a heat pump, the air should be dry and not colder than ~45F.
__________________
2018 Montana 3791RD (SOLD)
2017 Ram 3500 DRW 6.7 Cummins Aisin, B&W RVK3600 (SOLD)
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12-11-2017, 01:01 PM
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#17
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Montana Master
Join Date: Oct 2017
Location: Bastrop
Posts: 2,892
M.O.C. #20753
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Quote:
Originally Posted by masterdrago
On our 3791RD I've noticed that both thermostats have a heat pump setting. Where we are currently and in our driveway at home, the outside temps are too cold and the humidity is too high to get much from a heat pump. For the best from a heat pump, the air should be dry and not colder than ~45F.
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Sounds like it is time to head south!!
__________________
Mocha, one-eyed toothless, hurricane survivor, Pirate dog
2019 20th Anniversary Edition 3701LK
B&W 20K for Ford OEM Puck
2018 Ford F-350 Lariat CCLB PSD DRW KJ5CQH
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12-11-2017, 01:57 PM
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#18
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Montana Fan
Join Date: Jan 2015
Location: Maryville
Posts: 144
M.O.C. #15933
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Our new 2018 3791RD has one heat pump on the rear unit. Worked really well last weekend on the first trip out in new Montana
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12-11-2017, 01:59 PM
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#19
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Montana Fan
Join Date: May 2017
Location: Coeur D Alene
Posts: 264
M.O.C. #19835
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Quote:
Originally Posted by masterdrago
On our 3791RD I've noticed that both thermostats have a heat pump setting. Where we are currently and in our driveway at home, the outside temps are too cold and the humidity is too high to get much from a heat pump. For the best from a heat pump, the air should be dry and not colder than ~45F.
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Not sure if the RV heat pump is different than a home version, but I have one at my house in North Idaho and it works great at temperatures above 32 degrees.
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09-29-2018, 11:45 AM
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#20
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Montana Master
Join Date: Oct 2006
Location: McKinney
Posts: 7,167
M.O.C. #6433
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Quote:
Originally Posted by topjustice
Not sure if the RV heat pump is different than a home version, but I have one at my house in North Idaho and it works great at temperatures above 32 degrees.
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Our high efficiency home unit works well even down into the high 20’s and high humidity. I suppose the small RV units don’t work as well.
__________________
Bill & Patricia
Riley, our Golden
2007 3075RL (recently sold, currently without)
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