Mr. Heater Big Maxx MHU50NG Natural Gas Unit Heater
Natural gas unit heater delivering 50,000 BTU to heat large spaces. Notable for flexible venting and easy thermostat/gas access; includes conversion kit and mounting brackets. Users report strong heat distribution but mixed durability feedback
Highlights
- 50,000 BTU output
- vertical or horizontal venting
- outside-accessible thermostat/gas terminals
Pros
- high heat output (50,000 BTU)
- flexible venting (vertical or horizontal)
- easy outside access to thermostat and gas terminals
- includes gas-to-liquid propane conversion kit
- ceiling mount hardware included
Cons
- mixed feedback on durability
- some noise/fan motor issues reported
Best For
Features
- Heats up to 1,250 sq ft with 50,000 BTU per hour
- Exhaust system supports vertical or horizontal venting
- External access to thermostat, A/C terminals, and gas connection
- Includes natural gas to liquid propane conversion kit and ceiling mount brackets
- Requires minimum 8 ft floor-to-base clearance; limited 3-year parts/burners, 10-year heat exchanger warranty
