Coleman Mach 15 Roughneck 15,000 BTU RV Rooftop AC, Black

The Coleman Mach 15 Roughneck is the biggest rooftop air conditioner Coleman builds. Fifteen thousand BTU of cooling, dropped into the heavy-duty Roughneck housing, running on the newer R32 refrigerant. If you camp where it gets genuinely hot and you're tired of an undersized unit that can't keep up, this is the one that finally makes your rig cold.

It fits the standard 14 inch by 14 inch roof vent opening, so on most travel trailers, fifth wheels, and motorhomes it drops right into the existing hole where an old unit or a roof vent used to sit. This one wears the black shroud, Black on Black, which keeps a lower profile up top and doesn't show road grime the way a bright white cap does. The Roughneck name isn't just marketing. It's Coleman's heavy-duty line, the build they put in front of rental fleets and folks who run their AC hard all season long. If you've got a big toy hauler baking in a parking lot, or you boondock through desert summers, 15,000 BTU of Roughneck is the kind of capacity that actually earns its spot on the roof.

You can run this unit ducted or non-ducted, and that's the first decision to sort out before you order. Ducted means it feeds your coach's existing overhead ductwork, spreading cool air to registers down the length of the rig. That's the setup you want on a longer fifth wheel or a Class A where one center vent won't reach the bedroom. Non-ducted means the air blows straight down through a ceiling assembly mounted right under the unit, with the controls built into that assembly. Simpler, and great for a single-room trailer. Here's the important part. The rooftop unit ships by itself. The ceiling assembly is ordered separately, and you pick the ducted or non-ducted version to match how your RV is set up. Don't assume it's in the box, because it isn't.

On power, it's a 120 volt unit with a 13.1 amp compressor draw. That runs fine on a standard 30 amp RV shore connection when it's the main load. Like any 15,000 BTU air conditioner, it pulls hard on startup, so if you're running off a generator or trying to share a 30 amp pedestal with a water heater and a microwave, a soft start kit is worth every penny. It smooths out that inrush and keeps you from tripping breakers or bogging down the genset. This is a cooling-only unit. There's no heat pump built in, so if you need warmth in the shoulder seasons you'll be leaning on your furnace or a separate heater. It also doesn't include a condensate pump, which is normal for a rooftop AC that drains off the roof.

Install is straightforward for anyone comfortable on a ladder, but respect the weight. The unit is 79.5 pounds and it ships on a wooden skid. That's a two-person lift to get it up and set onto the roof gasket, one person guiding from inside as the bolts come down through the opening. Once it's seated and torqued to the gasket, you connect the matching ceiling assembly from below and wire it in. If you're replacing an old unit on the same 14 by 14 hole, it's mostly a bolt-for-bolt swap plus the new ceiling assembly.

One more thing on the R32 refrigerant. It's the current-generation charge Coleman moved to across the Mach line, and it's what a new unit like this ships with. Nothing special to do on your end, the system comes charged and sealed from the factory. If you're not sure whether the ducted or non-ducted ceiling assembly is right for your coach, or whether your electrical setup wants a soft start, give us a call. We'd rather get you the right combination the first time than have you send half of it back.