For big shops, barns and job sites that need a lot of heat for little money. Use it only in ventilated spaces or outdoors.
Amazon $156.99The VEVOR ZB-G125A 125,000 BTU is the better propane heater overall, rated 3.3 to 3.1. The VEVOR ZB-G125A 125,000 BTU leads on value and safety. The Mr. Heater MH400FAVT 400,000 BTU wins on turndown. The VEVOR ZB-G125A 125,000 BTU costs $508.85 less ($156.99 vs $665.84).
For large construction sites, barns and warehouses that need heat on an industrial scale from a bank of 100 lb tanks. Use it only with plenty of fresh air.
Amazon $665.84Prices were last checked October 30, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Which should you buy?
- Choose the VEVOR ZB-G125A 125,000 BTU for value ($1.26 per 1,000 BTU ($156.99, 125,000 BTU) vs $1.66 per 1,000 BTU ($665.84, 400,000 BTU)) and safety (flame-out shutoff; no safety listing published vs none stated; no safety listing published).
- Choose the Mr. Heater MH400FAVT 400,000 BTU for turndown (turns down to 250,000 BTU vs turns down to 100,000 BTU).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every forced air propane heater; a clear win is highlighted. How we rank explains each one.
| Factor weight | VEVOR ZB-G125A 125,000 BTU | Mr. Heater MH400FAVT 400,000 BTU |
|---|---|---|
| Overall rating | 3.3/5 | 3.1/5 |
| Value 25% | 86 $1.26 per 1,000 BTU ($156.99, 125,000 BTU) | 68 $1.66 per 1,000 BTU ($665.84, 400,000 BTU) |
| Safety 30% | 40 flame-out shutoff; no safety listing published | 30 none stated; no safety listing published |
| Warranty 15% | 0 1-year warranty | 0 1-year warranty |
| Turndown 15% | 29 turns down to 100,000 BTU | 54 turns down to 250,000 BTU |
| Ignition 10% | 100 electric ignition | 100 electric ignition |
| Fuel options 5% | 50 runs on a bulk tank only | 50 runs on a bulk tank only |
Specifications
| VEVOR ZB-G125A 125,000 BTU | Mr. Heater MH400FAVT 400,000 BTU | |
|---|---|---|
| Heating | ||
| Heat output | 100,000 to 125,000 BTU | 250,000 to 400,000 BTU |
| Type | Forced air | Forced air |
| Use | Job sites and garages | Job sites and garages |
| Heats up to | 3,100 sq ft | 10,000 sq ft |
| Thermostat | No | Yes |
| Fan | Yes | Yes |
| Fuel and power | ||
| Fuel | Bulk tank | Bulk tank |
| Hose included | Yes | Yes |
| Ignition | Electric | Electric |
| Power needed | 120 V outlet | 120 V outlet |
| Safety | ||
| Safety listing | None published | None published |
| Flame-out shutoff | Yes | - |
| Build | ||
| Dimensions | 8.7 x 26.8 x 17.9 in | 21.9 x 38.6 x 14.8 in |
| Weight | 19.7 lb | 56.4 lb |
| Warranty | 1 year | 1 year |
| Released | - | 2010-01 |
