Does A Dometic Controller Need To Be Reused When Installing An Advent Air Replacement Rooftop Unit

Updated 01/19/2026 | Published 08/03/2024

Question:

Looked through the other questions and answers and could not find the answer. Do I have to use the existing Dometic Control board box i.e. relay board from the old unit and install in the Advent Air ACDOM135?

asked by: Ken S

Expert Reply:

Hey Ken,

Are you keeping the original Dometic air distribution box? If so you would need the reuse the control box since the # ACDOM135 does not come with one. Advent Air builds their controllers into the air distribution box so you would need to replace the current one with one like the # ACDB or # ACRG15.

I'm assuming your current rooftop unit has the controller mounted inside of it? If so and you plan on keeping the existing air distribution box you'll need to figure out a way to mount it in the space between the air distribution box and rooftop unit.

expert reply by: Kevin C

Kate F.

1/19/2026

Hey Ken, how did things go with reusing the Dometic control box for your Advent Air ACDOM135 setup? Your update could make it easier for others deciding whether to keep their original air distribution box.