When the summer heat hits hard, the Coleman-Mach Signature Mach 3 keeps cool air moving evenly through your ceiling ducts. With a 13,500 Btu capacity and 320 CFM airflow, it drops the temperature fast without blasting cold air in one spot or leaving warm pockets behind. Large evaporator and condenser coils with raised lance fins pull heat out efficiently so the whole space stays comfortable.
Swapping out an old AC can be a headache when parts don’t line up. This complete system takes the guesswork out of the job. The rooftop unit, air distribution box, and thermostat are all matched to work together, so installation goes smoother and nothing catches you off guard. The kit fits a standard 14-1/4" × 14-1/4" roof opening and comes ready to bolt down and wire up.
You don’t have to go hunting for remotes or wall panels just to cool things off. The low-profile air distribution box gives you simple control knobs you can reach right at ceiling height. Open the louvers for direct cooling into the cabin, or close them to push air through your ducts. The swing-open grille lets you pull out and rinse the filter with no tools—just wash, dry, and snap it back in.
When mornings turn chilly but it’s not cold enough for the furnace, this system has you covered. It’s prepped for an optional 5,600 Btu heat strip (sold separately) that installs easily and takes the edge off without heavy power draw. It’s an easy way to stretch comfort through more of the season.
Whether you’re cooling every weekend or all summer long, durability matters. This unit is built with all-copper tubing and gas-flux brazed joints that help it stay sealed season after season. The polished white rooftop housing looks clean while standing up to weather, and at 79.5 lbs it stays manageable for handling during installation or maintenance.
Ratings & Reviews
I’ve ordered many things from trailer and they have never let me down. Easy to order, fast shipping, right on time. Actually, it arrived a day early. Nice surprise.
Just got this Coleman-Mach 3 RV AC 13.5K BTU roof air conditioner installed this morning. Replaced a 16 year old non-functioning 15K Coleman. Works fine cooling a 1999 Avion 5V 38ft. 5th wheel. Single air with ducted system. Dual pane glass windows and super thick insulation. Unit is located at 7800 ft of elevation in the White Mountains of AZ. It will perform nicely in these conditions. Easy to operate rotary digital thermostat got rewired at the same location as the old switch and slide control unit. Running nicely. Thank You Will at trailer for a very smooth transaction and fast delivery! Great mobile techs did a super clean and efficient install. Shoutout to David's RV Service out of Lakeside AZ.
Product arrived in 2 shipments. Upon arrival checked for damage. None noticed. Upon removal from box found small crack in cover at bottom not far from screw attachment. Most likely from shipping. This was cosmetic and would not effect function of unit. Installed unit wired and tested. Temperature reached 67 degrees in rv in about 4 hours. Much better than the 98 degrees prior to installation.
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