Recommended Replacement Options For A 15k BTU Dometic RV Air Conditioner System

Updated 12/22/2025 | Published 10/05/2024

Question:

Looking to replace a 15 k domestic rv ac. Need help finding correct unit

asked by: Donald S

Expert Reply:

Hey Donald,

Are you just wanting to replace the rooftop unit or the entire system? If you're wanting to replace just the rooftop unit then we'll need to first identify your specific unit since Dometic systems don't play nice with others. You can typically remove the cover to the air distribution box inside the RV and see a white sticker on the bottom of the rooftop unit that will have some serial and model numbers on it. If you can't find that then you'll need to get up on the roof and take the shroud off the unit to look for the sticker listing these numbers.

If you're wanting to just completely replace the system then you can go with one of the following systems depending on color and whether or not you want a wall thermostat:

Wall Thermostat:
White # FR55PV
Black # FR23PV

Controls Built Into Air Distribution Box:
White # FR92PR
Black # FR32PR

*Update* I got your picture and was able to determine that you have Dometic's High Performance Unit/Blizzard so you'll need the H551916AXX1J0 which is the Dometic Blizzard NXT 15K with Heat Pump. We unfortunately don't carry this model but you can still get it directly from Dometic.

expert reply by: Kevin C

Jameson C.

12/22/2025

Hey Donald, were you able to get the Dometic Blizzard NXT 15K with Heat Pump from Dometic? Knowing how that replacement went could help others trying to match their older rooftop units.