Replacement AC With Heat Pump for 2021 Keystone Alpine 2120RS
Updated 09/02/2025 | Published 06/26/2025
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Question:
Thank for your help. I have a 2021 Keystone Alpine 2120RS 5th wheel. The 5th wheel is capable of having 3 cooling units on the roof. Currently I have a Dometic H551916AAXX1J10 15K BTU heat pump in the rear of the unit and a Dometic H541916AXX1J0 in the front bedroom of the 5th wheel. The center position contains just a fan unit. I spoke with Keystone and with Dometic regarding a unit for the center unit. I was told it is very difficult to connect a 3rd unit into the existing ducting of the 5th wheel. They recommended I purchase a unit to just dump the air into the room area. If I go this way with the unit I would like to add a heat pump unit since the current single rear dometic heat pump unit is unable to keep up in colder conditions. Can you recommend a unit for this center position? I thought this unit may be a good choice but you may have a better unit, perhaps with a wireless thermostat?? or if this is the best then I can place an order. I have purchased a number of other items from your company.
asked by: Kevin S
Expert Reply:
Hey Kevin! Since you want a unit with a heat pump the Furrion Chill HE Low-Profile RV AC System w/ Heat Pump # FR46AD is the best option. Furrion makes great systems and, their new low profile AC is no exception. This does use a standard wall thermostat so you will have to run wire and find a place to install it.
The Furrion Chill Cube is another option, and the best AC out there right now. However, they don't have a heat option yet (we're told a heat strip is on the way but no ETA). This unit uses a variable speed compressor making it incredibly efficient and quiet. It also runs off of a remote so you won't have to worry about the thermostat installation.
You could always go this route and use something like a space heater since you wouldn't have a heat pump/strip but that is up to you. Since this would be a ductless setup you need one of the following:
-Furrion Chill Cube RV Air Conditioner w Air Distribution Box - Ductless - 18,000 Btu - Black # FR27TD
-Furrion Chill Cube RV Air Conditioner w Air Distribution Box - Ductless - 18,000 Btu - White # FR59TD
Any big plans with your Keystone this summer?
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Robin H.
9/2/2025
Hey Kevin! Did you decide to go with the Furrion Chill HE Low-Profile RV AC System with the heat pump, or did you opt for the Chill Cube with a space heater? I'm curious about your choice because it could help others in a similar situation.