ProCom ML300TBA-B 28K Blue Flame
#10 in Vent-freeFull review
The cheapest way here to heat a large propane room or garage with a thermostat. Pick it when price matters more than warranty length.
Amazon $188.99$188.99
2.9/5
A low cost thermostat heater for a propane home, cabin or shop up to a mid size room. It stays useful when the power is out.
- 20,000 BTU/hrOutput
- PropaneFuel
- Blue flameHeat
- YesThermostat
Check price at Amazon$170.99
Price checked November 2, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- Thermostat holds the room temperature on its own, turning down to 9,000 BTU
- Runs on propane with no power, a dependable backup during outages
- Base feet and wall bracket are both in the box
- Low price for a 20,000 BTU thermostat heater
Cons
- Propane only; no natural gas conversion
- Blower costs extra
- Only a one year parts warranty
The ProCom Blue Flame Thermostat family
Every ProCom Blue Flame Thermostat model we rank, smallest first. Ratings compare each against its own venting.
| Model | Output | Rating | Price |
|---|---|---|---|
| ProCom MN100TBA-B 10K Blue Flame | 10,000 BTU/hr | 2.3/5 | $129.59 |
| ProCom ML200TBA-B 20K Blue Flame (this one) | 20,000 BTU/hr | 2.9/5 | $170.99 |
| ProCom ML300TBA-B 28K Blue Flame | 28,000 BTU/hr | 3.3/5 | $188.99 |
How it scores
The rating comes from 5 measured or published factors, each scored 0-100 against fixed reference points for its venting. How we rank explains each one.
Specifications
| Model number | ML200TBA-B |
|---|---|
| Heat | |
| Venting | Vent-free |
| Heat type | Blue flame |
| Maximum input | 20,000 BTU/hr |
| Minimum input | 9,000 BTU/hr |
| Heating area claim | 950 sq ft |
| Fuel and controls | |
| Fuel | Propane |
| Thermostat | Yes |
| Blower | No |
| Ignition | Push button |
| Needs an outlet | No |
| Oxygen depletion sensor | Yes |
| Build | |
| Weight | 23 lb |
| Warranty | 1 year |
Alternatives in this venting
Dyna-Glo IR30PMDG-1 30K Infrared
#11 in Vent-freeFull review
A propane infrared heater for a garage, workshop or large drafty room where radiant heat beats warm air. Its wide turn down makes it flexible, but you set the heat by hand.
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Dyna-Glo BF20NMDG-4 20K Blue Flame
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A plain manual blue flame heater for a natural gas living room or den. Most buyers will get more for the money from a thermostat model.
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