Firman H08051 Dual Fuel 8000W vs Pulsar G12KBN Dual Fuel 12000W
The Pulsar G12KBN Dual Fuel 12000W is the more powerful unit: 9,500 running watts against 8,000 — about 16% more capacity for the Pulsar G12KBN Dual Fuel 12000W. The Pulsar G12KBN Dual Fuel 12000W runs longer at half load — 13 hours on its 8-gallon tank vs 12 hours.
| Firman H08051 Dual Fuel 8000W | Pulsar G12KBN Dual Fuel 12000W | |
|---|---|---|
| Type | portable | portable |
| Fuel | gasoline, propane | gasoline, propane |
| Running watts (gas / LP for standby) | 8000 W | 9500 W |
| Starting watts (gas) | 10000 W | 12000 W |
| Running watts (propane) | 7250 W | 8550 W |
| Starting watts (propane) | 9050 W | 10800 W |
| Noise level | 74 dBA | — |
| Runtime at 50% load (gas) | 12 h | 13 h |
| Fuel tank | 8 gal | 8 gal |
| Output voltage | 120/240V | 120/240V |
| Transfer-switch-ready outlet | — | 50 A |
| Outlets | — | 4x 5-20R, L14-30R, L14-50R, 12V DC |
| Start type | electric | electric |
| CARB compliant | — | Yes |
| Engine | — | Ducar OHV |
| Engine displacement | 439 cc | 457 cc |
| Weight | 212 lb | 209 lb |
| Warranty | — | 3 yr |
Frequently asked questions
Which is more powerful, the Firman H08051 Dual Fuel 8000W or the Pulsar G12KBN Dual Fuel 12000W?
The Pulsar G12KBN Dual Fuel 12000W, at 9,500 running watts on its best fuel versus 8,000 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 Firman H08051 Dual Fuel 8000W or the Pulsar G12KBN Dual Fuel 12000W?
Estimated fuel for 24 hours at about 50% load: $51 on gasoline for the Firman H08051 Dual Fuel 8000W vs $47 on gasoline for the Pulsar G12KBN Dual Fuel 12000W, 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.