2019 ProMaster Class B RV Outfitting With 12V DC Air Conditioner Rooftop Unit

Question

Question:

I’m outfitting a 2019 ProMaster for weekend boondocking. Will the Velit 2000R 8k BTU keep it comfortable without shore power?

asked by: Brian

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Expert Reply:

Brian, you’re right in the sweet spot. The Velit 8,000 BTU AC Unit # VE87QV runs directly on 12V and sips as little as 250 watts in Eco mode. For a ProMaster, 8,000 BTUs is plenty for cooling the living area, especially if you insulate well and use window covers.

How many batteries are you planning to run? That’ll help estimate hours of cooling. One wouldn't last that long, but a couple wired in parallel will give you several hours of AC use if not more. If lithium, you can get closer to 10-15 hours of run time depending on battery ah rating.

Other ProMaster or camper van owners - what’s your experience with off-grid AC systems?

expert reply by: Andrew N

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Answer 1

Hey Andrew! Yes, Furrion does have a Chill Cube model with a heat pump. This was actually just released for aftermarket sale. You will need a complete system to make the switch, new R32 units aren't backwards compatible with old R410A systems.…

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Answer 2

Hey Melanie. The reason you can't find a replacement for your GE ARC15AACBL2 15,000 btu air conditioner is because they phased them out. In 2025 all RV AC systems had to change over to a new coolant called R32. This was a EPA mandated decision.…

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Answer 3

Hey Lars, welcome back! I can indeed confirm that the Furrion Variable Speed Chill Cube air conditioner with a heat pump is indeed really happening. They are currently available for order (02/04/26) and will be shipped out towards the middle of next…

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Answer 4

Hey Tim welcome back! Your ARH15AACBL2 GE AC unit has the old 410a refrigerant in it so the GE Appliances item #GE64FR you were looking at isn't going to work as a replacement. The EPA mandated R32 refrigerant has been used in all new AC's…

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Answer 5

Hi Collin, welcome back! The most economical replacement is going to be from Advent Air. You will need a complete system since everything moved to R32 refrigerant. If your upgraded thermostat is R32 compatible, or a smart thermostat that got a…

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Answer 6

Hey Gene! Mach-C Everest Variable Speed RV AC System #CM35MR will work with your existing furnace. This is a complete replacement so you will install the new rooftop unit, air distribution box, and wall thermostat. The new Coleman thermostat will…

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Answer 7

Hey David, you can replace your Coleman Mach 15 with the Coleman Mach Everest part #CM35MR and use the same wiring that's behind the walls. Everything else would need to be swapped out but the wiring can be reused. We only have the Everest in the…

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2019 ProMaster Class B RV Outfitting With 12V DC Air Conditioner Rooftop Unit

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