Champion 4000W DH Open-Frame Inverter (100302) vs Westinghouse iGen4500
The Westinghouse iGen4500 is the more powerful unit: 3,700 running watts against 3,500 — about 5% more capacity for the Westinghouse iGen4500. The Westinghouse iGen4500 is the quieter of the two (52 dBA vs 64 dBA — though manufacturers measure noise at different loads and distances).
| Champion 4000W DH Open-Frame Inverter (100302) | Westinghouse iGen4500 | |
|---|---|---|
| Type | inverter | inverter |
| Fuel | gasoline | gasoline |
| Running watts (gas / LP for standby) | 3500 W | 3700 W |
| Starting watts (gas) | 4000 W | 4500 W |
| Noise level | 64 dBA | 52 dBA |
| Runtime at 25% load (gas) | 17 h | 18 h |
| Fuel tank | 2.9 gal | 3.4 gal |
| Output voltage | 120V | 120V |
| Outlets | — | TT-30R, 2x 5-20R, 2x USB |
| Start type | recoil | remote electric |
| CARB compliant | — | Yes |
| Engine displacement | 224 cc | 224 cc |
| Weight | 81.5 lb | 104.7 lb |
Frequently asked questions
Which is more powerful, the Champion 4000W DH Open-Frame Inverter (100302) or the Westinghouse iGen4500?
The Westinghouse iGen4500, at 3,700 running watts on its best fuel versus 3,500 W. Remember that dual-fuel and natural-gas ratings are lower than gasoline ratings — the comparison table shows the published per-fuel figures.
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.