The Coleman Mach 8 Plus is a high-capacity, ultra-low-profile rooftop air conditioner engineered for RVs where drag, roof clearance, and consistent cooling performance matter. At 15,000 BTU, it handles larger coach interiors while its dual-motor design delivers the same cooling output at both high and low fan speeds. The built-in condenser pump handles condensate automatically, eliminating the drip that standard units produce at the roofline.
Most 15,000 BTU rooftop air conditioners are tall, drag-heavy, and noisy at low fan speeds. The Mach 8 Plus was designed to fix all three problems. Its aerodynamic, low-profile shroud reduces wind resistance at highway speeds, which translates to measurable fuel savings on longer trips. The textured black finish on this model (part 37224-079) blends cleanly with dark-colored coach rooflines and resists the chalking and UV fade common on white plastic shrouds.
Where this unit really stands apart is its dual-motor architecture. Most single-motor rooftop ACs lose meaningful BTU output when dialed back to low speed. The Mach 8 Plus uses separate motors for the evaporator and condenser fans, allowing both to operate independently at optimized speeds. The result: you get the full rated 15,000 BTU of cooling whether you are running on high or low -- not just on high.
Full rated output maintained at both high and low fan speeds via dual-motor design.
Aerodynamic rooftop housing reduces highway drag and improves fuel economy over taller units.
Actively removes condensate from the rooftop unit -- no dripping down the sidewall or pooling on the roof.
UV-resistant textured black shroud for coaches with black or dark-colored roof profiles.
Standard single-motor rooftop ACs share one motor between the evaporator blower and condenser fan. When the thermostat calls for low speed, both fans slow together, reducing airflow across the condenser coil and dropping effective BTU output. The Mach 8 Plus separates these functions: one motor drives the interior evaporator blower, the other drives the exterior condenser fan. Each can run at its optimal speed regardless of the interior fan setting. This means true 15,000 BTU performance at low, medium, and high interior fan speeds -- not just at high.
In humid climates or during extended run cycles, a standard rooftop AC can produce a significant volume of condensate that drips off the edge of the roof onto slideouts, awnings, or the ground near entry doors. The built-in condenser pump in the Mach 8 Plus actively collects and evacuates this moisture through a dedicated drain line, keeping the roofline dry and eliminating the staining and annoyance of dripping condensate. This is especially valuable for full-timers and those camping in high-humidity environments.
The Mach 8 shroud is among the lowest-profile housings in the Coleman Mach lineup. Reducing rooftop height by even a few inches lowers the effective frontal area and reduces aerodynamic drag at highway speeds. For diesel pushers and long Class A coaches that run for hours at 65+ mph, this adds up. The low profile also reduces the risk of low-clearance bridge and canopy strikes that catch taller units off guard.
This listing covers the rooftop condenser/evaporator assembly (part 37224-079). A ceiling assembly and control box (thermostat/control kit) are required for a complete installation and are sold separately. Coleman Mach offers matching control kits and ceiling assemblies compatible with the Mach 8 Plus series. Confirm you have a compatible interior unit before ordering.
The Mach 8 Plus mounts through the standard 14 x 14 inch RV roof opening used by most Class A, Class C, and fifth-wheel roof AC cutouts. The unit bolts down to the roof using the standard Coleman Mach mounting foot pattern, with a foam gasket providing the weatherseal between the unit and the roof surface. Electrical connection is 120V AC, 15-amp dedicated circuit, standard for RV shore power and generator systems.
This is the rooftop unit only. You will need a compatible Coleman Mach ceiling assembly (interior air distribution box) and a control kit or thermostat to complete the installation. Do not attempt to run this unit without the matching interior ceiling assembly -- the evaporator blower requires the interior plenum for proper airflow and drainage.