Keep your Coleman Mach rooftop AC running clean and efficient with direct-fit replacement filters designed for the ceiling assembly models most commonly found in travel trailers, fifth wheels, and Class A and C motorhomes. This 2-pack gives you a spare on hand so you are never caught in summer heat with a clogged unit.
The Coleman Mach 6703-3303 filter is the OEM-specified replacement for a wide range of Coleman Mach AC ceiling assembly models. The non-allergenic fiber construction traps dust, pollen, pet dander, and road grit before it reaches the evaporator coil -- protecting both your air quality and the longevity of your unit. Filters are hand washable and reusable, cutting down on replacement frequency.
Proper fitment is critical. These filters measure 15-1/2 inches long x 14 inches wide x 5 inches deep and are designed to drop into the ceiling assembly retainer without modification. If your current filter matches those dimensions, this part is your direct replacement.
Captures dust, pollen, and particulates while remaining gentle for allergy-sensitive occupants.
Rinse, air dry, and reinstall -- no single-use waste. Replace when fiber breaks down or tears.
Pack of 2 means you always have a clean backup ready at the start of camping season.
Coleman Mach part 6703-3303 ensures proper fit for all listed ceiling assembly series.
These filters are specified for Coleman Mach ceiling assembly models in the following product series:
Always confirm your ceiling assembly model number against the list above before ordering. The model number is typically printed on a label inside the return air filter access panel of the ceiling assembly.
To clean: remove the filter from the ceiling assembly, shake out loose debris outdoors, then rinse gently with warm water. Allow the filter to air dry completely before reinstalling. Do not run the AC unit with the filter removed or while the filter is wet.
RV air conditioners circulate cabin air continuously during hot weather. Dusty campgrounds, dirt roads, and pet hair accelerate filter loading far faster than in a residential setting. A clogged filter forces the blower motor to work harder, reduces cooling capacity, and can cause the evaporator coil to ice over. Coleman Mach recommends inspecting the filter at least once per month during active use, and cleaning it whenever airflow feels noticeably reduced.
Even washable filters have a service life. Inspect the fiber mat after each cleaning. If the filter shows tears, permanent discoloration that does not rinse out, or significant fiber breakdown, replace it rather than reinstalling it. A damaged filter allows particulates to bypass the screen and coat the evaporator coil.