Coleman 38203-0645 Mach 3 Plus Roughneck 13,500 BTU RV Rooftop Air Conditioner White

The Coleman Mach 3 Plus Roughneck Series RV Air Conditioner (MPN: 38203-0645) is a heavy-duty rooftop cooling unit engineered for demanding applications including toy haulers, off-road rigs, construction vehicles, and hard-use RVs. Featuring a fortified interior construction designed to handle jarring, vibration, and rough terrain, the Roughneck delivers reliable, high-efficiency cooling where standard units fall short.

This unit produces a 13,500 nominal BTU cooling capacity paired with a 320 CFM airflow rate, driven by large evaporator and condenser coils with raised lance fins for optimal heat dissipation. All-copper tubing with gas-flux brazed joints ensures long-term durability and leak resistance. The unit is compatible with both ducted and non-ducted configurations, making it a versatile drop-in solution for a wide range of RV layouts.

Key Features:

• 13,500 nominal BTU cooling capacity
• 320 CFM airflow with large evaporator and condenser coils and raised lance fins
• All-copper tubing with gas-flux brazed joints for durability and longevity
• Fortified interior construction engineered for rough, off-road, and heavy industrial vehicle use
• Compatible with both ducted and non-ducted ceiling assembly configurations
• Quiet 2-speed fan with adjustable thermostat
• Arctic White textured shroud — updated 2026 design
• Installs into standard 14" x 14" roof vent openings
• Pre-installed roof compression gasket included — no additional sealant required
• 2-year parts and labor warranty
• 120V operation

Note: MPN 38203-0645 is the updated 2026 production replacement for the legacy SKU 38203-0665. The compatibility, cooling capacity, fitment, functionality, and performance specifications are equivalent between both part numbers, with the primary change being the updated Arctic White textured exterior shroud styling. The ceiling assembly must be ordered separately. Also cross-references part number 48203-0665.