Coleman 48204C866 Mach 15+ A/C Unit

After 12 years of use from our original unit that was on our Keystone Cougar RBS21 camper the unit finally quit cooling. I purchased this Coleman 48204C866 Mach 15 from Amazon. The unit arrived via FedEx without any damage in 3 days. The very next day I rented two sets of scaffolds to get to the top of the camper. The rooftop of my camper is 10ft high off the ground. I then unbolted the 4 bolts from the inside of the camper, then removed the cover on the outside. I removed the electrical enclosure the held all the wires for the electric power and thermosat wires. I left it just hanging in the ceiling as I removed the old unit onto the upper scaffold and then to the lower scaffold and in to my truck. Then reverse the process with the new unit. (from the my truck, to the lower scaffold, to the upper scaffold, then on the camper rooftop. I removed the cover off the new unit mounted the original electrical enclosure with all the wires, plugged the new electrical core into it, and remounted it. Then went inside the camper to alined the 4 bolts that hold the unit down. (Note before tighten these a/c mounting bolts alined the screw holes of the inside vent cover to there original screw holes.) I then mounted the inside ceiling vent grill and turn my a/c breaker back on. I then turned on my thermosat and the new unit turn on and is working perfectly.This new unit was the perfect fit for my camper.Jerry D.Houma, Louisiana

This is a nice unit. I read hundreds of reviews before making my choice to replace a Mach 3 13.5K- BTU unit on my camper, comparing technical specs and even performed servicing the Mach 3 before I decided to make the swap. I got to look under the cover for both and compare components. The inside components between the two units have nearly the exact same design layout, components, blower/fan, etc. but the Mach 15 is a little bit smaller package and a 2 piece shroud. I had trouble sliding the old Mach 13 shroud off for troubleshooting without dragging cover across evaporator fins but Mach 15 2 pc shroud is much easier. But it will flex a little so don't lift unit with it. The unit is easy to unload and lift to the roof, but the two piece shroud is not for lifting and sill crack if not careful. This went on a pop up camper, but If I had to hoist to a higher roof installation I would consider leave it in the box/pallet and unpackage it then. The pallet this unit cam on was only 15 lb wood and wrapped in cardboard but truck carrier delivered in perfect shape.It comes with the gasket installed and crush indicators so you cant screw it up. Follow the installation instructions in the book and save yourself hundreds from a dealer install. If you have the skills to assemble a grill you can swap units out. Follow the book.The inside unit is a perfect match for the 14x14 opening and easy to complete installation, I completed the job in under 2 hours. The duct installation trimming and taping took the longest just to make sure it was tight so no air leaks from unit. Remember the air comes straight down into the roof unit and makes a 90 degree turn to vents, so this vinyl duct will puff up like a balloon and any leaks will recirculate back into the inlet side.I'm not sure this unit is that much quieter than a Mach 13,5 BTU because its probably using the same blower with a more efficient compressor and evaporator but it does run smooth with no rattles and provide plenty of cold air. Is it worth the price difference of $100 for an upgrade? yes probably for us and should never need to worry about keeping cool even in middle of hot summer camping in Florida. If we get 6 years out of it, for $100/year its a reasonable tradeoff.Good luck with your choice. installation is easy. Nice unit.

I can’t even understand this. Placed order for new unit. Box arrived in great shape. Cover of unit was in great shape. When tech went to install, he removed the cover to find a gorillas playground! The compressor looks like someone who assembled it tried to twist tie the lines in. Refrigerant lines were a total mess with kinks and twists.I have started the return process but it will take 2 days to hear back. If the seller processes the return I will update this review.So frustrating! Just want AC.UPDATE - Seller has not communicated. Starting claims process. JUST DON'T DO IT!!!!!!

The compressor died on my old Mach 15 so I needed to a new one quickly before a trick to a state park with temps forecasted in the high 90s. The shipper was quick and it was packaged well with no damage. I opted to have a RV shop do the install to save my back. They are not hard to install but bulky and heavy.Did learn a lesson when the shop forgot to hook up the freeze sensor to the cooling fins. Without that electrical path the controller will NOT let the compressor come up. Took a trip back to the dealer to make them fix it. Easy to hook it back up but we had to isolate the problem first.We have a 23' Rockwood Roo which is a Hybrid camper. Means the bed ends are tent material so its a challenge to keep it cool inside. Now that the kids are gone we usually only open one bed which helps. This past weekend temps got up to 100 degrees during the day and I don't think the camper ever got above 86 inside. That may seem pretty warm but it felt fine especially considering how it felt outside and we had no shade at all.The RV guys said that the Coleman's are much better than the Dometics as well.