Mr. Heater 30K Blue Flame Dual Fuel
#1 in Vent-freeFull review
The pick for heating a big room on either fuel with a thermostat and a long warranty. Add the blower kit for high ceilings.
Amazon $265.39$265.39
The Mr. Heater 30K Blue Flame Dual Fuel and the Mr. Heater 30K Radiant Dual Fuel are evenly matched, rated 4.5 and 4.5.
Mr. Heater 30K Radiant Dual Fuel
#2 in Vent-freeFull review
A big radiant heater for a garage, workshop or open room on either fuel. It pairs thermostat control with the longest warranty in this group.
Amazon $265.39$265.39
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
Each factor is scored 0-100 against the same fixed reference points for every vent-free gas wall heater; a clear win is highlighted. How we rank explains each one.
| Factor weight | Mr. Heater 30K Blue Flame Dual Fuel | Mr. Heater 30K Radiant Dual Fuel |
|---|---|---|
| Overall rating | 4.5/5 | 4.5/5 |
| Value 30% | 73 $8.85 per 1,000 BTU ($265.39, 30,000 BTU) | 73 $8.85 per 1,000 BTU ($265.39, 30,000 BTU) |
| Heat output 15% | 100 30,000 BTU/hr | 100 30,000 BTU/hr |
| Controls 20% | 75 thermostat, electronic ignition | 75 thermostat, electronic ignition |
| Fuel 5% | 100 runs on propane or natural gas | 100 runs on propane or natural gas |
| Warranty 30% | 100 5-year warranty | 100 5-year warranty |
Specifications
| Mr. Heater 30K Blue Flame Dual Fuel | Mr. Heater 30K Radiant Dual Fuel | |
|---|---|---|
| Heat | ||
| Venting | Vent-free | Vent-free |
| Heat type | Blue flame | Infrared |
| Maximum input | 30,000 BTU/hr | 30,000 BTU/hr |
| Heating area claim | 1,000 sq ft | 1,000 sq ft |
| Fuel and controls | ||
| Fuel | Dual fuel | Dual fuel |
| Thermostat | Yes | Yes |
| Blower | No | No |
| Ignition | Electronic (battery) | Electronic (battery) |
| Needs an outlet | No | No |
| Oxygen depletion sensor | Yes | Yes |
| Build | ||
| Warranty | 5 years | 5 years |
| Released | 2018-10 | 2018-10 |