The R-2550 is specifically designed for ambulances and other lighter-duty vehicles with large interior spaces to heat and cool quickly. Available only in 12 VDC.
R-2550 Heater and A/C Unit

Features & Specifications
BTUs
BTUs Heating – 45,900 BTU/Hr @ 100°F (13.4 kW @ 37.8°C) air temperature rise. Cooling – 35,600 BTU/Hr @ 36°F (10.4 kW @ 2.2°C) refrigerant temperature and 80°F (26.7°C) wet bulb entering air
Air Flow
390 CFM (662 m3/h)
Weight
39 lbs. (17.7 kg)
Current Draw
22 amps @ 13.6 VDC (Heater/AC)
Models
R-2550-0P Heater/Air Conditioner (12 VDC)