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Mr. Heater Big maxx 50,000 btu natural gas unit heater with propane conversion kit

By Mr. Heater
Part #: F260550
  • Ceiling mounted forced air propane unit heater turns garages, barns and workshops into heated work spaces
  • 50,000 BTUs heat up to 1,250 sq ft, or approximately a 3-car garage
  • Compatible with standard 24-volt or new WI-F enabled thermostats (sold separately)
  • Low profile design – minimum 10 ft ceiling height and 8 ft clearance required from base of heater to floor
  • High temperature safety shut-off switch and gas safety shut-off flame sensor
  • Electric spark ignition with self-diagnostic control module - 115-Volt AC power required
  • Includes ceiling mounting brackets and a natural gas to propane conversion kit
  • Aluminized steel tubular heat exchanger for maximum efficiency and longer life
  • 4 in. flue size; category 1 vertical or category 3 horizontal venting required (sold separately)

This part is universal

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Have questions? Call us at 866-205-5299


The Mr. Heater Big Maxx 50,000 BTU unit heater will turn your garage or barn into a work space you can use all year-round. Uses a built-in high velocity electric fan to pull cool air in and across the heat exchanger, then forces warm, comfortable air out. Its low profile design requires only a 10 ft minimum ceiling height and 1 in. mounting clearance. Features a high temperature safety shut-off, gas safety shut-off flame sensor, and an electric spark ignition with self-diagnostic control module, to bring you peace of mind and years of comfortable, safe heat. Comes as natural gas and includes a propane conversion kit and ceiling mounting brackets. Requires 115-Volt AC power and can be vented vertically or horizontally - please check local codes and restrictions. This heater offers all the operating versatility and safety you have come to expect from Mr. Heater.


Forced Air Heater Type
LP/Propane Fuel
Forced Air Heater Type
Natural Gas


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