Recommended Plug And Play Replacement For A Dometic RV Rooftop Air Conditioner Unit
Updated 06/09/2025 | Published 07/03/2022
Question:
I have a dometic p/n:991762457 a/c unit, looking for a replacement that will install and plug into existing wiring.
asked by: Timothy
Expert Reply:
The number that you gave me didn't come back to anything but there is a quick way to tell if the Advent Air Replacement RV Air Conditioner for Dometic Setup w/ Start Capacitor # ACDOM135B is going to be compatible.
First, remove the shroud and check the BTU rating of your current unit. You'll want to match or go higher than your current rating. The # ACDOM135B has a 13,500 BTU rating. If you have a 15,000 BTU rating on your current unit you'll want the # ACDOM150B instead.
Second, remove the cover of your air distribution box and you'll want to look up into the opening for the controller. There will be a wire harness coming down from the rooftop unit which will plug into the controller. If it's a 6-pin like I have pictured below then the # ACDOM135B will be able to plug right into the controller.
If you have a 9-pin then you most likely have a heat pump and will need the to replace the entire system with either the # ACM135BC or # ACM150BC.
(click to enlarge)
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Bobby
6/8/2025
Kevin Where can I buy that 6 pin connector? I have an older camper I’m remolding for the hunting lease. I tried to run the AC and just the fan blows. I noticed the blue wire on the connector had come out. Not sure how/why bought like it is. I can get this unit back up and running if I replace that connector. Thanks Bobby