The Mach 8 Plus is Coleman Mach's flagship low-profile rooftop AC unit, purpose-built for RV travel. Its streamlined shroud cuts wind drag on the road while its dual-motor design delivers the full 13,500 BTU of cooling on both high and low fan speeds -- something single-motor units cannot match. If you are replacing an aging Coleman Mach unit or upgrading from a standard-profile AC, the 47203-076 drops directly into the industry-standard 14-inch x 14-inch roof opening.
Most budget rooftop ACs use a single motor that reduces cooling output when you drop to low fan speed. The Mach 8 Plus uses two separate motors -- one for the evaporator blower, one for the condenser fan -- so refrigerant circulation and heat rejection are not compromised when you run quietly on low. You get the same 13,500 BTU regardless of which speed you select.
The low-profile shroud is a genuine advantage for Class A and Class C motorhome owners who clear low bridges, tree branches, or garage doors. The reduced height also cuts aerodynamic drag at highway speeds, contributing to modest fuel savings on long trips.
Separate evaporator and condenser motors maintain full 13,500 BTU output on both high and low fan speeds.
Aerodynamic Arctic White shroud reduces roof height and highway drag compared to standard-profile units.
Designed for the industry-standard 14 in x 14 in RV roof opening -- replaces most existing Coleman Mach units.
UV-resistant Arctic White shroud matches the majority of factory RV roof accessories and resists yellowing.
Coleman Mach has produced RV rooftop air conditioners since the 1970s, and the Mach 8 platform is their most refined iteration. Key engineering decisions that matter to RV owners:
The 47203-076 uses the standard 14 in x 14 in roof cutout shared by Coleman Mach, Dometic, and most other rooftop AC brands. If your current unit sits in that opening, the Mach 8 Plus installs without cutting or re-framing. The ceiling assembly (air distribution box / return air grille) is sold separately -- confirm compatibility with your existing interior kit before ordering.
The Mach 8 Plus mounts to the roof from above. The gasket seal between the unit and the roof deck is critical -- use the foam gasket supplied with the unit and torque the four mounting bolts evenly to prevent leaks. The unit requires a 120V AC shore power or generator connection rated for the startup amperage draw.
The Mach 8 Plus is compatible with Coleman Mach analog and digital wall thermostats, including the popular Mach 8 controller kit. If you are upgrading from an older Coleman Mach unit and keeping your existing wall thermostat, verify the control wiring matches the 47203-076 harness pinout. Coleman Mach's 5-wire thermostat standard is widely compatible across the Mach product line.
This listing is for the rooftop condensing unit only. The interior ceiling assembly (air distribution box, return grille, and blower housing that mounts inside the RV) is a separate purchase. If you are replacing a complete system, confirm whether your existing ceiling assembly is reusable or needs replacement.