Champion 7500W Dual Fuel with CO Shield (201281) vs Firman H08051 Dual Fuel 8000W
The Firman H08051 Dual Fuel 8000W is the more powerful unit: 8,000 running watts against 7,500 — about 6% more capacity for the Firman H08051 Dual Fuel 8000W. The Firman H08051 Dual Fuel 8000W runs longer at half load — 12 hours on its 8-gallon tank vs 10 hours.
| Champion 7500W Dual Fuel with CO Shield (201281) | Firman H08051 Dual Fuel 8000W | |
|---|---|---|
| Type | portable | portable |
| Fuel | gasoline, propane | gasoline, propane |
| Running watts (gas / LP for standby) | 7500 W | 8000 W |
| Starting watts (gas) | 9375 W | 10000 W |
| Running watts (propane) | 6750 W | 7250 W |
| Starting watts (propane) | 8400 W | 9050 W |
| Noise level | 74 dBA | 74 dBA |
| Runtime at 50% load (gas) | 10 h | 12 h |
| Fuel tank | 7.7 gal | 8 gal |
| Output voltage | 120/240V | 120/240V |
| Outlets | 2x GFCI 5-20R duplex, L5-30R, L14-30R | — |
| Start type | electric | electric |
| CO safety shutoff | Yes | — |
| Engine displacement | 439 cc | 439 cc |
| Weight | 205 lb | 212 lb |
Frequently asked questions
Which is more powerful, the Champion 7500W Dual Fuel with CO Shield (201281) or the Firman H08051 Dual Fuel 8000W?
The Firman H08051 Dual Fuel 8000W, at 8,000 running watts on its best fuel versus 7,500 W. Remember that dual-fuel and natural-gas ratings are lower than gasoline ratings — the comparison table shows the published per-fuel figures.
Which costs less to run, the Champion 7500W Dual Fuel with CO Shield (201281) or the Firman H08051 Dual Fuel 8000W?
Estimated fuel for 24 hours at about 50% load: $59 on gasoline for the Champion 7500W Dual Fuel with CO Shield (201281) vs $51 on gasoline for the Firman H08051 Dual Fuel 8000W, at national average prices. These are spec-sheet-derived estimates — the assumptions are on the methodology page, and different fuels make this a cost comparison, not an efficiency ranking.
Where do these specifications come from?
Every record on BackupAtlas is hand-curated from manufacturer documentation and spec sheets, and each generator page links to its source document.