Can Advent Air RV AC System Replace Dometic In 2021 Coleman

Updated 05/13/2026 | Published 05/11/2026

Question:

2021 colman with a dometic b57915.711 jo prod 991763333 serial 00992976. R410a refrig. The thermostat is built into the unit. Will this work with my setup or do i need more?

asked by: Randy B

Expert Reply:

Hey Randy! The Advent Air RV Air Conditioner System # ADV92SR will work with your setup. This is a complete system, so it has the AC unit, thermostat, and air distribution box, everything you need for a full replacement. It is compatible with both ducted and ductless setups so no matter what it will work in your Coleman.

Where are you headed once you get the AC replaced?

expert reply by: Robin H

Advent Air RV AC
(click to enlarge)

John M.

5/13/2026

This unit has a remote thermostat and needs 4 wires. Is your unit wired for this? If not you will need to run at the least 4 wires in the wall somehow that will connect to the A/C unit. One is a +12v, a ground, and the other two are for A/C control and heater control. It also has an output for the furnace.

Mike S.

5/13/2026

The Advent air ADV92SR unit replaced our older (2013) Dometic unit and has worked well. We also had to replace the thermostat with the new Advent thermostat but it is not difficult. Make sure to tape a small label to each wire removed from the old ac unit so you know what it is for:Ground, 12V+, etc. Most are colored insulation and there should be a wiring diagram or legend inside the old unit housing. If not you may be able to find it online using the model number.