What is Decibel Rating of Advent Air RV AC Unit part # ACM135B

Updated 05/21/2026 | Published 05/17/2026

Question:

ACM135B noise level?

asked by: William

Expert Reply:

Hey William, the Advent Air RV AC unit part # ACM135B that you referenced has a 76 decibel rating which is about the volume of a normal conversation. Are you looking for the quietest model possible? What are you replacing?

expert reply by: Jameson C

Advent Air RV AC Unit
(click to enlarge)

Darrell

5/20/2026

Work very good cold air

Jameson C.

5/20/2026

@Darrell thanks for the feedback!

Judy

5/20/2026

I purchased this unit last year and was able to install it with one other person setting it in place. Very easy and works amazing. Took hour and half start to finish.

Jameson C.

5/20/2026

@Judy great to hear thanks!

Dave

5/21/2026

I can’t speak to actual decibel ratings (no decibel meter available), but I can say that both of the Advent air conditioners I have installed are quieter than the older Dometic units they replaced. My unit has a racetrack ducting setup, so both units feed into the ducts rather than dumping cold air directly into the cabin, so this already minimizes the airflow noise. As to the sound of the units running, I’d say that these units are smoother and marginally quieter than the older units were, with less vibration and “rumbling.” Hth, Dave