Mr. Heater
BIG MAXX 50000 BTU NATURAL GAS UNIT HEATER WITH PROPANE CONVERSION KIT
SKU: M023 F260550
Easy — 1–2 hours
Description
Fitment
Fitment Guaranteed
Don’t gamble
on fit.
Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.
Available on iOS & Android
Specifications
| Brand | Mr. Heater |
| Part Number | M023 F260550 |
Videos
Mr Heater Big Maxx - How I installed and COST.
The TRUE Cost of a Mr. Heater 50,000 BTU Garage Setup (Parts Breakdown Included!)
Complete Mr. Heater Install From Start To Finish
Mr. Heater Big Maxx Review
How To Install Mr. Heater Big Maxx Unit Heater
Big Maxx heater review 1 year later
Mr. heater BIGG MAXX heater review.
How To Switch A Mr Heater Big Maxx To run On Propane
My first gas heater install - Mr.heater Big Maxx garage heater $399 from Menards
This WILL Make Your Mr. Heater More Efficient!! And Maybe Increase Lifespan
Buy with Confidence
Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.
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