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Thread: Heat pump and how many
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01-15-2021, 09:14 AM #1
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Heat pump and how many
In simple language how does a heat pump work in a RV? If you have three air conditioners do you want or need a heat pump for each air conditioner?
Thanks in advance for your help.
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01-15-2021, 09:20 AM #2
Yep, GD offers this as an option on the main AC in many of their floorplans. I have this on my Solitude. It works to heat down to about 40f outside, due to physics it just won't move energy past that.
Nothing stopping them from having a heat pump on ALL AC units in a trailer, other vendors do this, but GD only offers it on the one even in a multi-unit system.
Having a heat pump is integral to the design of the AC unit, not something you can add aftermarket.
Of note, the heat pump uses the ceiling duct work and will therefore not warm the underbelly. Since it stops being effective ABOVE freezing anyways, just kind of reinforces that you should absolutely use the gas furnace if freezing weather is expected.2019 GMC Sierra 3500HD Denali Diesel DRW (Crew Cab | 8 Ft bed | OEM Puck System | Curt Gooseneck Ball for OEM Puck | Timbrens on rear axle)
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01-15-2021, 11:40 AM #3
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Here is a good explanation of how a heat pump works as part of a youtube video posted by Chad & Tara of Changing Lanes. https://www.youtube.com/watch?v=6JTIJJyZL0I
Frank & Jolynn Martin
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01-15-2021, 12:32 PM #4
Due to the limitations of a HP only one is needed in an RV. At anything above 40 I can heat my 376 up as warm as I want. Below 40 I just use the furnace.
Pam & Ed
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03-21-2021, 08:31 AM #5
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Newbie question:
How does one cycle between the heat pump and furnace?
On shakedown trip now, it was chilly around 40 last night.
Is there a level of temp monitoring going on so the thermostat chooses based on ambient temps, or other?
Checked manual, control panel, thermostat, etc - no obvious answer like with the water heater!
Colin & Tracy
'21 Chevy Silverado 3500HD LTZ/Z71/SRW, Long bed, Anderson UH
'21 Solitude 310 GK-R
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03-21-2021, 08:39 AM #6
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So you have the choice of "prefer gas" or "prefer heat pump" to switch. The prefer gas will always use gas furnance from what I can tell. Prefer heat pump will use the heat pump until the temperature falls below 8 degrees of what your setting is. Example if you have prefer heat pump and your temperature is set to 68 degress, heat pump will be used until the temperature drops below 60 in the rv. Then gas furnace will kick on.
FYI, the further the outside temperature drops below 50 degrees, the less effective the heat pump is and it's completely ineffective 40 degrees and below.
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03-21-2021, 08:43 AM #7
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03-21-2021, 08:53 AM #8
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03-21-2021, 09:54 AM #9
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A quick and simple question of how they work. When you go to the heat pump, there is a reversing valve in the refrigeration circuit (freon) that changes the flow of the freon, and that basically makes the evaporator function as the condenser.....and the condenser function as the evaporator.
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03-21-2021, 02:32 PM #10
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