Mr. Heater 250,000 BTU Big Maxx Natural Gas Unit Heater with NG to LP Conversion Kit
Description
The Mr. Heater Big Maxx 250,000 BTU Natural Gas Unit Heater turns workshops, garages and barns into year-round spaces with powerful, efficient forced air heating. Engineered for commercial-grade performance, this wall-mounted system uses a high-velocity fan to draw cool air across its heat exchanger and distribute warmth up to 3,435 square feet. Its low-profile design requires only 10-foot ceiling clearance and 1-inch mounting space, ideal for tight areas. Safety features include high-temperature shut-off, gas safety flame sensor, and electric spark ignition with self-diagnostic control for reliable operation. Configured for natural gas with an included propane conversion kit, it supports vertical and horizontal venting with power exhaust technology.
Features
- 250,000 BTU output for up to 3,435 sq ft
- Power exhaust for vertical and horizontal venting
- Safety system with temperature shut-off and flame sensor
- Electric spark ignition with self-diagnostic control
- Factory set for natural gas with LP conversion kit