Heatstar HSSVFRD20NGBT 20K Radiant
#6 in Vent-freeFull review
A natural gas radiant heater for a mid size room or workshop that comes complete with blower and thermostat. Pay the premium if you would otherwise buy a fan kit.
Amazon $259.99$259.99
3.3/5
A thermostat blue flame heater for a large natural gas room or garage. It works well, but the Mr. Heater dual fuel 30K has a longer warranty for little more.
- 30,000 BTU/hrOutput
- Natural gasFuel
- Blue flameHeat
- YesThermostat
Check price at Amazon$253.51
Price checked November 2, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- Thermostat holds a set temperature in a large room
- 30,000 BTU with turn down to 15,000
- No outlet needed, with battery push button ignition
Cons
- Natural gas only
- Only a one year warranty
- Blower sold separately
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 | BFSS30NGT-4N |
|---|---|
| Heat | |
| Venting | Vent-free |
| Heat type | Blue flame |
| Maximum input | 30,000 BTU/hr |
| Minimum input | 15,000 BTU/hr |
| Heating area claim | 1,000 sq ft |
| Fuel and controls | |
| Fuel | Natural gas |
| Thermostat | Yes |
| Blower | No |
| Ignition | Electronic (battery) |
| Needs an outlet | No |
| Oxygen depletion sensor | Yes |
| Build | |
| Warranty | 1 year |
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