Can Advent Air Low Profile RV AC Replace Dometic FreshJet 3

Updated 09/12/2025 | Published 05/22/2025

Products Featured in This Question

Electric Heat Strip for Advent Air RV Air Conditioners - 5,500 BTU - R32

(14)

$98.23

Advent Air Low Profile RV Air Conditioner System - Single Zone - 15,000 Btu - White - R32

(27)

$1012.39

Advent Air RV Air Conditioner System - Single Zone - 15,000 Btu - White - R32

(205)

$936.64

Question:

Hello, would Model Number: ASA86YR be an economical low cost $600-$700 range vs $1200 replacement for a 2021-22? Dometic Freshjet 3 model fjx3573mwhas ducted. Thank you for your advice and expertise.

asked by: James

Expert Reply:

Hey James! The Advent Air Low Profile RV AC # ASA86YR might work as a replacement for your Dometic FreshJet 3. However, there have been so many compatibility issues with Dometic we can no longer guarantee it will work as a direct swap. What we recommend instead is a complete replacement.

Right now is a great time to switch since everything is moving to new R32 units following the 2025 EPA requirements. This also means parts for the old R410A units are being phased out. Even if the # ASA86YR worked you may find yourself needing a complete system if the ADB or thermostat failed.

For a complete R32 system we have the Advent Air RV Air Conditioner System # ADV92SR or the low profile version # ADV82SR. Both come with a new ADB, thermostat, and start capacitor. A heat strip # ADV34QR is also available separately. I understand this cost is a little bit higher but again, if you encounter something like an ADB failure and the parts are no longer available you're going to end up needing another full system.

If you have any other questions feel free to reply below.

expert reply by: Robin H

Advent Air Low Profile R32 RV AC
(click to enlarge)

Robin H.

9/12/2025

Hey James, did you decide to go with the complete R32 system for your RV? I'm curious to know how it worked out for you, as it could help others considering a similar upgrade.