The DuroMax XP9500iH is the better inverter generator overall, rated 4.3 to 3.7. The DuroMax XP9500iH leads on run time, warranty and starting. The Champion 10000W Tri Fuel Open Frame wins on value and fuel options. The Champion 10000W Tri Fuel Open Frame costs $600.18 less ($1,398.82 vs $1,999).
A home-backup inverter for people who want to run most of a house, including central air on many systems, through a transfer switch. Long runtime, CO shutoff and a five-year warranty make it good value for its size.
Amazon $1,999A big, low-cost-per-watt open-frame inverter for whole-house backup on gas, propane or natural gas. Too loud for campgrounds.
Amazon $1,398.82Prices were last checked October 22, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Each factor is scored 0-100 against the same fixed reference points for every large inverter generator; a clear win is highlighted. How we rank explains each one.
| Factor weight | DuroMax XP9500iH | Champion 10000W Tri Fuel Open Frame |
|---|---|---|
| Overall rating | 4.3/5 | 3.7/5 |
| Value 30% | 62 $0.26 per running watt | 84 $0.18 per running watt |
| Quiet 20% | 69 61 dBA at light load, maker rating | 0 72 dBA at light load, maker rating |
| Run time 15% | 100 21 hours on a tank at 25% load | 64 15 hours on a tank at 25% load |
| Fuel options 10% | 70 gasoline or propane | 100 gasoline, propane or natural gas |
| CO safety 10% | 100 shuts off when carbon monoxide builds up | 100 shuts off when carbon monoxide builds up |
| Warranty 10% | 100 5-year warranty | 50 3-year warranty |
| Starting 5% | 100 electric start with a remote fob or app | 80 push-button electric start |
| DuroMax XP9500iH | Champion 10000W Tri Fuel Open Frame | |
|---|---|---|
| Output | ||
| Gasoline | 7,600 W running, 9,500 W starting | 7,750 W running, 10,000 W starting |
| Propane | 7,200 W running, 9,025 W starting | 6,975 W running, 10,000 W starting |
| Natural gas | - | 6,278 W running |
| Outlets | 4 × 120 V, L14-30 | 4 × 120 V, L14-30 |
| Parallel capable | Yes | No |
| Total harmonic distortion | under 3% | under 3% |
| Price per watt | $0.26 | $0.18 |
| Fuel and run time | ||
| Fuel | Gasoline, propane | Gasoline, propane, natural gas |
| Tank | 7.1 gal | 7.5 gal |
| Run time (gasoline) | 21 hr at 25% load | 15 hr at 25% load |
| Run time (propane, 20 lb tank) | - | 8 hr |
| Engine | 459 cc | 459 cc |
| Noise and safety | ||
| Rated noise (light load) | 61 dBA | 72 dBA |
| CO shutoff | Yes | Yes |
| CARB compliant | No | - |
| Build | ||
| Starting | Remote, electric and recoil | Electric and recoil |
| App | - | No |
| Wheels | Yes | Yes |
| Dimensions | 26.2 x 25 x 29.6 in | 27.1 x 28 x 26.2 in |
| Weight | 216 lb | 180.8 lb |
| Warranty | 5 years | 3 years |
