Replacement Coleman Mach 3 RV AC Unit Recommendation for 2013 Keystone Fuzion FZ310

Published 05/13/2026

Question:

Went under an unmarked overpass. My rear ac unit took the most damage. We have a 2013 Keystone Fuzion FZ310 with a Coleman Mach 3 model 48254c869 15000 BTU. The unit we need replaced is for the garage area. The thermostat is fine. We just need the unit. My husband wants to stick with another Coleman mach so the two units on the roof match. Is there a compatible replacement unit for model 48254c869?. We had a really rough 2nd half of a 9000 mile road trip. Our last day, we hit a deer. Luckily, we had a bike rake on the front. Two bikes and a bike rack is cheaper to replace than a F350. I am telling you that to remind everyone to be kind with their responses.

asked by: Carol K

Expert Reply:

Hey Carol, sorry to hear about the bad luck on your trip! So we can definitely help with the a replacement Coleman Mach 3 unit but since there was a refrigerant law change in January of 2025 that means that your current thermostat and air box would not work with what's currently made and you'd have to go with a kit that replaced all of it like with the part # CM55RR.

What kind of bike did you have?

expert reply by: Jameson C