ThermoMate PHF18B 18,000 BTU
#5 in PortableFull review
For ventilated garages, workshops and job sites where a rolling 18,000 BTU cabinet heater beats a tank top. The manual rules out homes, RVs and living quarters.
Amazon $169.99$169.99
3.9/5
For hunters who want quiet push button lighting in a ventilated blind or tent and up to 12,000 BTU. Follow the maker’s ventilation rules.
- 6,000 to 12,000 BTUHeat output
- Indoor (ventilated)Use
- CSASafety listing
- 1 yearWarranty
Check price at Amazon$126.48
Price checked October 30, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- Approved by the maker for ventilated hunting blinds, tents and cabins
- Lights with a push of a button, no clicking a spark
- Shuts itself off if it tips or if oxygen in the space runs low
- Can run from a 20 lb tank with a hose and filter bought separately
Cons
- Needs an AA battery to light
- Only a one year warranty, shorter than other Buddy models
- Heavier than the Portable Buddy for its output
The Mr. Heater Buddy family
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 | 4,000 to 9,000 BTU | 4.5/5 | $89.97 |
| Mr. Heater Hunting Buddy MH12HB (this one) | 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 |
How it scores
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.
Specifications
| Model number | MH12HB (F232035) |
|---|---|
| Heating | |
| Heat output | 6,000 to 12,000 BTU |
| Type | Portable |
| Use | Indoor (ventilated) |
| Heats up to | 300 sq ft |
| Thermostat | No |
| Fan | No |
| Fuel and power | |
| Fuel | 1 lb cylinder or bulk tank |
| Hose included | No |
| Ignition | Electric |
| Power needed | Batteries |
| Safety | |
| Safety listing | CSA |
| Low-oxygen shutoff | Yes |
| Tip-over shutoff | Yes |
| Flame-out shutoff | Yes |
| Build | |
| Dimensions | 17 x 12 x 16 in |
| Weight | 16 lb |
| Warranty | 1 year |
| Released | 2012-12-03 |
Alternatives in this type
Mr. Heater Big Buddy MH18B
#6 in PortableFull review
For heating a ventilated cabin, ice shack or large tent that a 9,000 BTU Buddy can’t keep warm. Give it the 18 sq in of fresh air at floor and ceiling the maker requires.
Mr. Heater $240.26$240.26
Camplux CHV18B 18,000 BTU
#8 in PortableFull review
For patios and open garages where a rolling 18,000 BTU cabinet heater is handy. Camplux files it under outdoor use only, so treat it that way.
Amazon $146.82$146.82
Compare
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