Coleman | Mach 15 RV Air Conditioner | 38204-066 | 38204-064 | 15,000 BTU | White | R32
Upgrade your RV with the Coleman 38204-064 with new shroud design, legacy SKU: 38204-066 RV Air Conditioner, a 15,000 BTU powerhouse in stylish white. Designed to fit seamlessly into any 14"x14" opening, this eco-friendly unit with R-32 refrigerant offers the highest cooling output in the Mach Series, making it the world's most powerful RV air conditioner. The Coleman 38204-064 is the go-to choice for optimal cooling performance and reliability on your road trips.
Important Product Update:
Please Note: Coleman has implemented a running production change to the Mach 15 rooftop air conditioner line. The new Coleman Mach 38204-064 features the updated 2026 Arctic White textured shroud design and is the direct replacement for it's predecessor the Coleman Mach 38204-066. Customers ordering a Coleman Mach 38204-066 will receive the new 38204-064 model instead due the the production change. The compatibility, cooling capacity, fitment, functionality, and performance specifications remain equivalent, with the primary change being the updated exterior shroud styling.
- Impressive 15,000 BTU capacity ensures powerful and efficient cooling
- R32 Refrigerant
- Easy replacement, fits any 14"x14" opening
- Highest cooling output in the Mach Series, world's most powerful RV air conditioner
- R-32 refrigerant for eco-friendliness, equipped with a 1/3 HP fan motor
- Versatile installation options: Suitable for both ducted and non-ducted systems, providing flexibility to cater to your specific RV configuration and preferences.
-
The following part numbers refer to the same 15,000 BTU Mach 15 rooftop air conditioner platform:
- 38204-064 (Current Production Model)
- 38204-066 (Previous Production Model)
- 48204-066
- 48254C866
- 48204-066
- 48204-0666
- 08-0080
- New shroud design SKU: 38204-064 is a running line change by Coleman.
- Size & Weight: 13.8"H × 26.1"W × 38.0"L | 85 lbs
- Ships with $99 Truck Freight, requires ceiling assembly based on configuration
Note: All new replacement RV air conditioner units come with a pre-installed roof compression gasket on the base of the unit.
This gasket is designed to provide a proper seal between the A/C and the RV roof, ensuring a secure and leak-resistant installation.
No additional sealant or roof gasket will be required for the rooftop AC unit.
Need help confirming fitment?
Our team at United RV Parts is here to help you find the right replacement or parts for your RV Air Conditioner.
Text or call 817-984-1852 with the make and model number of your existing Air Conditioner and we’ll make sure you get exactly what you need the 1st time.
Product Overview
48204C866, 48204-666, 48204-966 updated number is: 48204-066. Elevate your RV experience with the Coleman 48204-066 RV Air Conditioner, boasting an impressive 15,000 BTU capacity for unparalleled cooling power. This sleek, white unit is designed for easy replacement, fitting seamlessly into any 14"x14" opening. As the highest cooling output in the Mach Series, it stands as the world's most powerful RV air conditioner, ensuring a comfortable journey regardless of your destination. Updated with eco-friendly R32 refrigerant, this air conditioner combines efficiency with environmental consciousness.
The 1/3 HP fan motor and all-copper tubing guarantee durability, providing a long-lasting solution for your cooling needs. For added versatility, the optional Heater Assembly delivers 5,600 BTUs of heat for cooler climates.
Backed by a 2-year factory warranty, the Coleman 48204-066 is not only a quality investment in comfort but also a reliable choice for the road. Make every adventure memorable with the best-selling RV air conditioner that combines innovation, power, and efficiency, ensuring a refreshing environment for your travels.
Additional Instructions:
Instructions for purchasing all required parts:
- Select your preferred ceiling assembly (required to complete installation)
- Add the Heat Strip - optional but recommended when replacing your unit
- Choose your wall thermostat and control box (if applicable)


