Coleman-Mach Evaporator Fan Motor 1468A3219 for Basement A/C

When your Coleman-Mach basement air conditioner still hums along and the coil is getting cold, but the air coming out of the registers has gone weak, the evaporator fan motor is usually the part that's given up. This is the genuine Coleman-Mach 1468A3219 evaporator fan motor, the inside blower that pulls return air across the cold coil and pushes it back through your rig's ductwork. It's the same motor Coleman RVP fits to the 6535, 6538 and 46515 basement units, so you're replacing like for like instead of gambling on a generic substitute.

Basement air conditioners live under the floor or in a storage bay, and they move a lot of air through long duct runs to reach every register in the coach. That's a harder job than a rooftop unit, and the evaporator motor is what does it. Over years of camping the bearings dry out, the windings heat-cycle, and one day the motor either won't spin up or runs slow and noisy. If your compressor is kicking on and the coil is getting cold but airflow at the vents is barely there, the fan motor is the first thing to check.

This is the inside motor, meaning the evaporator side that handles the conditioned air inside the coach, not the outside condenser fan. Coleman-Mach lists 1468A3219 specifically for the two-ton 6535, 6538 and 46515 series, which were sold across a lot of Class A and fifth-wheel floorplans that used ducted basement cooling. If your unit's data tag shows one of those model numbers, this is the motor built for it.

Before you condemn the motor, rule out the simple stuff. A clogged return-air filter, a dirty evaporator coil, or a crushed duct can all mimic a weak fan. But when the filter's clean and you can hear the motor straining, humming without spinning, or cutting out after it warms up, the motor itself is the problem. A failed run capacitor can also stop a good motor from starting, so it's worth testing that at the same time you swap the motor. Catching a weak motor early also saves the compressor, since running a unit with poor airflow can freeze the coil and put extra strain on the whole system.

Swapping the evaporator motor is a job most handy RV owners can tackle, but it isn't a five-minute fix. You'll pull the return-air panel, disconnect the wiring at the plug, loosen the blower wheel from the shaft, and transfer it to the new motor. Snap a photo of the wiring before you unplug anything, and mark the blower wheel's position on the shaft so airflow direction stays the same. Older coaches sometimes ran a different plug style, so check your harness before you start. If you aren't comfortable working around 120-volt wiring, have an RV tech handle the swap.

A few things this motor is not. It's not a rooftop-unit fan, and it won't fit the ceiling-mount Mach series. It isn't the outside condenser motor either. And it's not a universal HVAC motor off the hardware-store shelf. Basement units use a specific motor with the right shaft, mounting, and speed for that cabinet, which is exactly why matching the Coleman-Mach part number matters. Grab the wrong motor and you'll fight mounting brackets and weak airflow all afternoon.

Because these units are still keeping a lot of older coaches cool, a correct replacement motor is worth having on hand before the peak of summer. We source this as a genuine Coleman-Mach part, so it carries the fit and speed the factory intended. If you aren't sure whether your basement AC is a 6535, 6538 or 46515, check the model tag inside the return-air compartment and match it before you order.