Recommended Replacement AC Unit for Coleman Mach 3

Updated 10/09/2025 | Published 06/22/2022

Question:

I need a replace our ac unit on our camper. It is currently a Coleman mach3. Which advent ac will work for this?

asked by: David T

Expert Reply:

For a replacement Advent unit for your Coleman Mach, I suggest the 15,000 Btu Advent Air Replacement RV Air Conditioner for Coleman Setup w/ Start Capacitor, # ACCOL150B for black cowling or # ACCOL150 for white.

These options are designed to replace the old Coleman Mach air conditioner as direct replacement. There is an included adapter wiring kit that ensures the AC works seamlessly with your existing, in-good-working-order Coleman air distribution box and thermostat.

expert reply by: Michael R

Jeff L.

10/9/2025

Looking for Coleman Mach 3 Power saver with heat pump or replacement with same features, do you have anything? For a 2015 Itasca Sunstar 35B.

Nick S.

10/9/2025

@JeffL Hey Jeff, unfortunately after 2024 AC units are not compatible with anything older than 2024. There were new EPA restrictions put into place. With that said you need to get the exact model replacement for your original. We do not carry one so our recommendation is to replace with a new AC system. I recommend the Coleman-Mach Signature 3 # CM83RR and the additional heat kit # CM96RR.