The default choice for heating a ventilated tent, blind or small cabin on 1 lb cylinders, with the option to hook up a bigger tank later. Keep the 9 sq in of fresh air the maker requires.
Price checked October 30, 2026. As an Amazon Associate we earn from qualifying purchases.
Every Mr. Heater Buddy model we rank, smallest first. Ratings compare each against its own type.
| Model | Heat output | Rating | Price |
|---|---|---|---|
| Mr. Heater Little Buddy MH4B | 3,800 BTU | 3.6/5 | $69.99 |
| Mr. Heater Portable Buddy MH9BX (this one) | 4,000 to 9,000 BTU | 4.5/5 | $89.97 |
| Mr. Heater Hunting Buddy MH12HB | 6,000 to 12,000 BTU | 3.9/5 | $126.48 |
| Mr. Heater Big Buddy MH18B | 4,000 to 18,000 BTU | 3.9/5 | $240.26 |
The rating comes from 6 measured or published factors, each scored 0-100 against fixed reference points for its type. How we rank explains each one.
| Model number | MH9BX (F232000) |
|---|---|
| Heating | |
| Heat output | 4,000 to 9,000 BTU |
| Type | Portable |
| Use | Indoor (ventilated) |
| Heats up to | 225 sq ft |
| Thermostat | No |
| Fan | No |
| Fuel and power | |
| Fuel | 1 lb cylinder or bulk tank |
| Hose included | No |
| Ignition | Push-button piezo |
| Power needed | None |
| Safety | |
| Safety listing | CSA |
| Low-oxygen shutoff | Yes |
| Tip-over shutoff | Yes |
| Flame-out shutoff | Yes |
| Build | |
| Dimensions | 14.25 x 9 x 15 in |
| Weight | 10.6 lb |
| Warranty | 3 years |
| Released | 2009-06-01 |
A low cost 18,000 BTU cabinet heater for well ventilated garages, sheds and patios, with tip, low oxygen and flame out shutoffs. The maker requires good ventilation indoors.
Amazon $117.99For ventilated garages, offices and workshops that need a rolling 18,000 BTU heater with a full set of shutoffs. The manual rules out homes and living quarters.
Amazon $152.99For heating the middle of a ventilated tent, blind or shelter from all sides. Keep the 18 sq in of fresh air the manual requires.
Amazon $129.99Compare the Mr. Heater Portable Buddy MH9BX with any other propane heater →
More from Mr. Heater: every Mr. Heater product ranked.
