Coleman 38203-064 Mach 3 Plus 13,500 BTU Rooftop RV Air Conditioner - Arctic White

The Coleman Mach 3 Plus RV Air Conditioner (38203-064) is a high-performance rooftop cooling unit engineered for reliable, efficient comfort on the road. Delivering 13,500 nominal BTU of cooling capacity with 320 CFM airflow, this Arctic White unit is a proven choice for mid-size to large RVs. It mounts directly into any standard 14" x 14" roof opening and is compatible with both ducted and non-ducted ceiling air distribution systems.

Key Features:

• 13,500 BTU cooling capacity — powerful performance for mid-size to large RVs in moderate to warm climates
• 320 CFM airflow — high-efficiency air circulation for consistent interior comfort
• Large evaporator and condenser coils with raised lance fins — maximizes heat transfer and dissipation efficiency
• All-copper tubing with gas-flux brazed joints — superior durability and resistance to vibration and thermal cycling
• R-32 refrigerant — next-generation, eco-forward refrigerant; replaces prior R-410A models
• Medium-profile shroud (13.8" height) — lower aerodynamic profile for reduced wind resistance while traveling
• Ducted and non-ducted compatible — flexible installation to suit a wide range of RV configurations
• Pre-installed roof compression gasket — ensures a secure, leak-resistant seal between the unit and the RV roof; no additional sealant required
• Optional heat strip ready — compatible with an optional Heat Strip Assembly providing up to 5,600 BTUs of supplemental heat
• 115V AC / 60Hz — standard RV electrical compatibility; 13.2 full-load cooling amps

The 38203-064 is the updated 2026 model featuring a refreshed Arctic White textured shroud design, and serves as the direct replacement for the legacy Coleman Mach 38203-066. All performance specifications, mounting footprint, and ceiling assembly compatibility remain identical to the prior generation — making it a straightforward drop-in replacement. Cross-reference part numbers: 38203-066, 48203-066, 48203-666, 38253-066, 48253-066.

Note: Ceiling air distribution box (ADB) must be ordered separately. R-32 refrigerant is classified A2L (mildly flammable) — service should be performed by a qualified HVAC technician using appropriate equipment.