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
The ProCom ML300TBA-B 28K Blue Flame rates 3.3 among vent-free gas wall heaters; the Ashley Hearth DVAG25-DF Dual Fuel rates 3.2 among direct vent ones. The ProCom ML300TBA-B 28K Blue Flame costs $711 less ($188.99 vs $899.99).
Ashley Hearth DVAG25-DF Dual Fuel
#7 in Direct ventFull review
For a cabin, garage apartment or open living area that needs a lot of heat without power, especially if you might switch between propane and natural gas.
Amazon $899.99$899.99
Prices were last checked November 2, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Scores side by side
These two sit in different venting classes (vent-free and direct vent), and each is scored against the reference points for its own class, so a rating says how well each does among its own venting peers. How we rank explains each factor.
| Factor weight | ProCom ML300TBA-B 28K Blue Flame | Ashley Hearth DVAG25-DF Dual Fuel |
|---|---|---|
| Overall rating | 3.3/5 | 3.2/5 |
| Value 30% | 92 $6.75 per 1,000 BTU ($188.99, 28,000 BTU) | 91 $36 per 1,000 BTU ($899.99, 25,000 BTU) |
| Heat output 15% | 90 28,000 BTU/hr | 50 25,000 BTU/hr |
| Controls 20% | 50 thermostat | 50 thermostat |
| Fuel 5% | 0 propane only | 100 runs on propane or natural gas |
| Warranty 30% | 0 1-year warranty | 0 1-year warranty |
Specifications
| ProCom ML300TBA-B 28K Blue Flame | Ashley Hearth DVAG25-DF Dual Fuel | |
|---|---|---|
| Heat | ||
| Venting | Vent-free | Direct vent |
| Heat type | Blue flame | Furnace |
| Maximum input | 28,000 BTU/hr | 25,000 BTU/hr |
| Minimum input | 14,000 BTU/hr | - |
| Heating area claim | 1,400 sq ft | 825 sq ft |
| Fuel and controls | ||
| Fuel | Propane | Dual fuel |
| Thermostat | Yes | Yes |
| Blower | No | No |
| Ignition | Push button | Push button |
| Needs an outlet | No | No |
| Oxygen depletion sensor | Yes | - |
| Build | ||
| Weight | 28 lb | 62.2 lb |
| Warranty | 1 year | 1 year |