The Mr. Heater Portable Buddy MH9BX rates 4.5 among portable propane heaters; the Avenger FBDTP15 15,000 BTU rates 3.3 among tank top ones. The Avenger FBDTP15 15,000 BTU costs $51.70 less ($38.27 vs $89.97).
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.
Amazon $89.97For buyers who want a certified 15,000 BTU tank top for outdoor work or a ventilated job site at the lowest price. Expect to light it by hand.
Amazon $38.27Prices were last checked October 30, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
These two sit in different type classes (portable and tank top), and each is scored against the reference points for its own class, so a rating says how well each does among its own type peers. How we rank explains each factor.
| Factor weight | Mr. Heater Portable Buddy MH9BX | Avenger FBDTP15 15,000 BTU |
|---|---|---|
| Overall rating | 4.5/5 | 3.3/5 |
| Value 25% | 50 $10 per 1,000 BTU ($89.97, 9,000 BTU) | 62 $2.55 per 1,000 BTU ($38.27, 15,000 BTU) |
| Safety 30% | 100 CSA listed, low-oxygen shutoff, tip-over shutoff, flame-out shutoff | 90 CSA listed, tip-over shutoff, flame-out shutoff |
| Warranty 15% | 100 3-year warranty | 0 1-year warranty |
| Turndown 15% | 79 turns down to 4,000 BTU | 48 turns down to 10,000 BTU |
| Ignition 10% | 100 push-button piezo ignition | 0 lit by hand |
| Fuel options 5% | 100 runs on 1 lb cylinders or a bulk tank | 50 runs on a bulk tank only |
| Mr. Heater Portable Buddy MH9BX | Avenger FBDTP15 15,000 BTU | |
|---|---|---|
| Heating | ||
| Heat output | 4,000 to 9,000 BTU | 10,000 to 15,000 BTU |
| Type | Portable | Tank top |
| Use | Indoor (ventilated) | Job sites and garages |
| Heats up to | 225 sq ft | - |
| Thermostat | No | No |
| Fan | No | No |
| Fuel and power | ||
| Fuel | 1 lb cylinder or bulk tank | Bulk tank |
| Hose included | No | No |
| Ignition | Push-button piezo | By hand |
| Power needed | None | None |
| Safety | ||
| Safety listing | CSA | CSA |
| Low-oxygen shutoff | Yes | - |
| Tip-over shutoff | Yes | Yes |
| Flame-out shutoff | Yes | Yes |
| Build | ||
| Dimensions | 14.25 x 9 x 15 in | 13 x 8 x 19 in |
| Weight | 10.6 lb | 3 lb |
| Warranty | 3 years | 1 year |
| Released | 2009-06-01 | - |
