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02-09-2021, 09:15 AM
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#1
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Established Member
Join Date: Jan 2021
Location: Easton
Posts: 24
M.O.C. #27975
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Is the Heat Pump an Option?
Hello Everyone.
We just purchased a slightly used 2019 Montana 3791 20th Anniversary Edition.
Does the heat pump come as an option during the build out or is it a standard piece of equipment? I do not have access to the unit until April, just wondering if we have heat pumps or not.
Thank's in advance.
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02-09-2021, 10:15 AM
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#2
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Site Team
Join Date: Jun 2011
Location: Wilsey
Posts: 18,799
M.O.C. #11455
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Our 2017 came with a heat pump in the main AC unit so I would imagine yours has one also.
__________________
Dick, Joyce, Diego, Picatso and Gustav
2017 3720 RL, and 2013 HC 343RL
Pullrite Hitch, IS, Disk Brakes, 3rd AC, Winegard Traveler, Bathroom door mod, Dometic 320, couch for desk swap, replaced chairs, sun screens, added awnings, etc.
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02-09-2021, 10:27 AM
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#3
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Montana Master
Join Date: Aug 2018
Location: Minden - NV
Posts: 507
M.O.C. #22360
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The heat pump model is only the main AC (non-bedroom). The bedroom was AC only. I added a third AC and moved the AC only unit to the kitchen vent opening and bought a new heat pump model to go in the bedroom. This way I can use both heat pumps in tandem in the ducted system. It works well down to about 33°-35°F.
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2013 F350 Lariat Ultimate CC LB
2019 3790RD
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02-09-2021, 11:49 AM
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#4
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Established Member
Join Date: Jan 2021
Location: Easton
Posts: 24
M.O.C. #27975
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Looks like it comes with the Cold weather package. I am still very new to the 5th. I will have to wait until April to check it out. Thanks for the info.
Monty
2019 3791RD
20th Ann. Edition
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02-09-2021, 12:13 PM
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#5
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Montana Fan
Join Date: Oct 2015
Location: R
Posts: 261
M.O.C. #17922
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My 2015 3790RD with Legacy package did not come with a heat pump.
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02-09-2021, 01:25 PM
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#6
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Montana Master
Join Date: May 2011
Location: Hixson
Posts: 3,436
M.O.C. #11397
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Our 2018.5 3791RD came with a HP standard on the main unit.
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2018.5 Montana 3791RD
Full Timers 9/1/2010 through 1/16/2020.
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02-09-2021, 03:20 PM
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#7
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Montana Master
Join Date: Aug 2004
Location: Livermore
Posts: 5,183
M.O.C. #1920
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It was added somewhere between 2015 and 2017. Not sure of the exact year. Looking forward to it on our 2021. Good luck with your new coach.
__________________
Ron and Terrie Ames plus Meg - MOC #1920/KF0NTA
2021Montana 3230CK Super Solar+ Legacy Package
2021 Ram 3500 Laramie Longhorn, BIM Charging
4x4, SRW, LB, Crew Cab, Pullrite 3900 Hitch
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02-10-2021, 06:32 AM
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#8
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Montana Master
Join Date: Oct 2019
Location: Jacksonville
Posts: 2,237
M.O.C. #25165
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I also have a 2019 3791RD and the unit in the living room has heat pump on mine. It does a fair job down to the upper 30's to low 40's. After that, you'll need to help it a bit with electric heater, the fireplace or run the furnace.
I've been in teens to 20's at night with 40's in the day and did not need to run the furnace at all, but I did keep the inside temps in the low 60's.
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Robert & Diana McNeal
2019 Montana Legacy 3791RD 20th Anniversary Edition
2014 F350 4x4 6.7L SRW
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02-11-2021, 06:20 AM
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#9
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Established Member
Join Date: Jan 2021
Location: Easton
Posts: 24
M.O.C. #27975
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Legacy
Rob
Do you have the legacy package? Just curios, I am hoping we have the heat pump. From the sounds of it we might. Would be good on those chilly May mornings the wife hates being cold.
If we do not have the heat pump the fireplace should work and the furnace if needed.
Thanks for the info.
Monty.
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02-11-2021, 06:28 AM
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#10
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Montana Master
Join Date: Oct 2019
Location: Jacksonville
Posts: 2,237
M.O.C. #25165
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We do have the legacy, but as I understand it, the heat pump is not part of that package. The easiest way to tell if you have the heat pump is to cycle through the modes on your thermostat in the kitchen. Mine is over the coffee bar. You should see "Heat Pump" as one of the modes if it has one.
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Robert & Diana McNeal
2019 Montana Legacy 3791RD 20th Anniversary Edition
2014 F350 4x4 6.7L SRW
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02-11-2021, 07:03 AM
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#11
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Montana Master
Join Date: Aug 2004
Location: Livermore
Posts: 5,183
M.O.C. #1920
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The Heat Pump is part of the Four Season Living package which is on all Montana’s, listed on the brochure. I did not look at the HC.
__________________
Ron and Terrie Ames plus Meg - MOC #1920/KF0NTA
2021Montana 3230CK Super Solar+ Legacy Package
2021 Ram 3500 Laramie Longhorn, BIM Charging
4x4, SRW, LB, Crew Cab, Pullrite 3900 Hitch
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02-11-2021, 09:26 AM
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#12
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Montana Master
Join Date: May 2006
Location:
Posts: 1,733
M.O.C. #5751
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Don't worry about the HP. We're on our third RV with a HP, never use them. It's no good below 40 and we prefer other sources of heat....Lasko towers.
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02-11-2021, 04:37 PM
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#13
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Seasoned Camper
Join Date: Aug 2018
Location: San Antonio
Posts: 67
M.O.C. #22453
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Quote:
Originally Posted by montyfishing
Hello Everyone.
We just purchased a slightly used 2019 Montana 3791 20th Anniversary Edition.
Does the heat pump come as an option during the build out or is it a standard piece of equipment? I do not have access to the unit until April, just wondering if we have heat pumps or not.
Thank's in advance.
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As best as I can tell, my 2019 3731 has the heat pump in the rear bedroom, according to the micro air thermostat, plus when I raise the temp on the front living area thermostat, I hear the gas furnace come on. Have learned to put a trash can on the rear half of the floor vent in the kitchen to keep it from blowing on the thermostat
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Greg H.
San Antonio, TX
2019 3731 w/20K GooseBox, 2021 F350 Crew cab TD dually
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02-12-2021, 06:40 AM
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#14
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Montana Master
Join Date: Oct 2018
Location: Anderson
Posts: 2,787
M.O.C. #22835
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I'm pretty sure the heat pump/ac is now standard on all the 4 season models. Per the statement above, we have 2 thermostats. Both are identical. Even though the heat pump / ac is on the front unit and the rear is ac only, they both display exactly the same. Heat Pump is an option on the second thermostat, but it does nothing.
FYI, after 2 years of ownership now and using the camper almost every day, our heat pump work well till 42 degrees outside. Then it starts to diminish. When the outside temperature reaches 38, it blows nothing but cold air.
Ours is a front living room model. The fire place is in the very front and it keeps the living room pretty warm. But it does nothing for the kitchen area, 3 steps lower, even with the ceiling fan running.
The furnace, if run by itself, does keep the camper warm throughout, end-to-end. But I figure about 45-50% of the heat blows under the floor (that winter package ... that's what keeps the pipes from freezing). So, with these high ceilings, 4 slide outs, you guessed it?.... when the outside temps drop, the propane usage skyrockets. When outside temps are in the 20's, its not uncommon to run through a 30 pound tank of propane in 2 days. BUT! The pipes do not freeze up!
If using your camper when outside temps are below freezing, and you depend on electric heat only in the coach area, your pipes will freeze. The furnace has to be running to keep the underbelly heated. That is the trade off.
__________________
History is not about the past, it's an explanation of the present.
2019 Montana High Country 375FL
2014 Chevy Silverado Duramax, 6.6L Dually
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02-12-2021, 06:55 AM
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#15
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Montana Master
Join Date: Oct 2019
Location: Jacksonville
Posts: 2,237
M.O.C. #25165
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Quote:
Originally Posted by DutchmenSport
I'm pretty sure the heat pump/ac is now standard on all the 4 season models. Per the statement above, we have 2 thermostats. Both are identical. Even though the heat pump / ac is on the front unit and the rear is ac only, they both display exactly the same. Heat Pump is an option on the second thermostat, but it does nothing.
FYI, after 2 years of ownership now and using the camper almost every day, our heat pump work well till 42 degrees outside. Then it starts to diminish. When the outside temperature reaches 38, it blows nothing but cold air.
Ours is a front living room model. The fire place is in the very front and it keeps the living room pretty warm. But it does nothing for the kitchen area, 3 steps lower, even with the ceiling fan running.
The furnace, if run by itself, does keep the camper warm throughout, end-to-end. But I figure about 45-50% of the heat blows under the floor (that winter package ... that's what keeps the pipes from freezing). So, with these high ceilings, 4 slide outs, you guessed it?.... when the outside temps drop, the propane usage skyrockets. When outside temps are in the 20's, its not uncommon to run through a 30 pound tank of propane in 2 days. BUT! The pipes do not freeze up!
If using your camper when outside temps are below freezing, and you depend on electric heat only in the coach area, your pipes will freeze. The furnace has to be running to keep the underbelly heated. That is the trade off.
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Ours is a front bedroom, rear den model. The Heat Pump option only displays on the thermostat in the kitchen which controls the rear unit. Front/bedroom thermostat only shows AC and Furnace, but the Furnace option doesn't seem to do anything.
To save on propane, you can get the heat pump to operate at lower temps by supplementing with electric heat inside. I have 2 electric heaters and position one of them so that the return ducts on the rear unit pick up the warmer air and recirculate it throughout the coach. I also purchased remote thermometers and put one in the belly and one in the basement so I could make sure there was no danger of freezing pipes.
By using electric heaters with the heat pump, I can keep the inside of the coach livable even down into the 20's outside. Inside temps will maintain 60-65 and the belly and basement never went below 40 without using any propane at all. Much below 20 and I will need to kick the furnace on from time to time. HTH.
__________________
Robert & Diana McNeal
2019 Montana Legacy 3791RD 20th Anniversary Edition
2014 F350 4x4 6.7L SRW
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02-12-2021, 06:59 AM
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#16
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Montana Master
Join Date: Mar 2016
Location: Catoosa
Posts: 786
M.O.C. #18384
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Is the heat pump option a real heat pump similar to a residential unit, or is it just an electric heat strip positioned in the air flow?
__________________
2015 3100RL legacy...2005 Ford F-250 CC SB. Tows like a charm! 4/19 Updated to 2017 Chevy 3500 CC SB SRW -hope it tows as well as my F 250 did!
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02-12-2021, 07:02 AM
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#17
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Montana Master
Join Date: Oct 2019
Location: Jacksonville
Posts: 2,237
M.O.C. #25165
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AFAIK, it is an actual heat pump. It basically runs the AC in reverse.
__________________
Robert & Diana McNeal
2019 Montana Legacy 3791RD 20th Anniversary Edition
2014 F350 4x4 6.7L SRW
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02-12-2021, 08:21 AM
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#18
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Montana Master
Join Date: Oct 2018
Location: Anderson
Posts: 2,787
M.O.C. #22835
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Quote:
Originally Posted by RMcNeal
AFAIK, it is an actual heat pump. It basically runs the AC in reverse.
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Correct!
__________________
History is not about the past, it's an explanation of the present.
2019 Montana High Country 375FL
2014 Chevy Silverado Duramax, 6.6L Dually
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02-14-2021, 01:47 PM
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#19
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New Member
Join Date: Jul 2019
Location: SHAVERTOWN
Posts: 7
M.O.C. #24513
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We have the 2019 3791RD and it did come with a heat pump as standard equipment. BTW, the heat pump works quite well. Even though the living room unit is the heat pump, the cross over ducting provides some heat in the bedroom.
__________________
Mike & Teresa
1984 Prowler 27X
2019 Montana 3791RD
2003 Dodge 3500 Dually Diesel
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02-14-2021, 02:40 PM
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#20
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Seasoned Camper
Join Date: Aug 2018
Location: San Antonio
Posts: 67
M.O.C. #22453
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Quote:
Originally Posted by RMcNeal
I also have a 2019 3791RD and the unit in the living room has heat pump on mine. It does a fair job down to the upper 30's to low 40's. After that, you'll need to help it a bit with electric heater, the fireplace or run the furnace.
I've been in teens to 20's at night with 40's in the day and did not need to run the furnace at all, but I did keep the inside temps in the low 60's.
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Out of all the replies, the heat pump is always reported to be on the front AC unit. Mine is on the rear AC unit/rear bedroom (2019 3731). I had the roof repaired a couple of years ago (don't ask!) and I wonder if they reversed the units, and if it matters?
__________________
Greg H.
San Antonio, TX
2019 3731 w/20K GooseBox, 2021 F350 Crew cab TD dually
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