The DuroMax XP9500iH is the better inverter generator overall, rated 4.3 to 2.9. The DuroMax XP9500iH leads on run time, fuel options and warranty.
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 open-frame inverter for California homes and 50 A RVs that need clean power through a transfer switch, when you can find it in stock.
AmazonPrices were last checked October 28, 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 9000W Open Frame CARB |
|---|---|---|
| Overall rating | 4.3/5 | 2.9/5 |
| Value 30% | 62 $0.26 per running watt | 50 no current price (neutral score used) |
| 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 | 32 10.5 hours on a tank at 25% load |
| Fuel options 10% | 70 gasoline or propane | 0 gasoline only |
| 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 9000W Open Frame CARB | |
|---|---|---|
| Output | ||
| Gasoline | 7,600 W running, 9,500 W starting | 7,250 W running, 9,000 W starting |
| Propane | 7,200 W running, 9,025 W starting | - |
| Outlets | 4 × 120 V, L14-30 | 4 × 120 V, L14-30, USB |
| Parallel capable | Yes | No |
| Total harmonic distortion | under 3% | under 3% |
| Price per watt | $0.26 | - |
| Fuel and run time | ||
| Fuel | Gasoline, propane | Gasoline |
| Tank | 7.1 gal | 4.3 gal |
| Run time (gasoline) | 21 hr at 25% load | 10.5 hr at 25% load |
| Engine | 459 cc | 420 cc |
| Noise and safety | ||
| Rated noise (light load) | 61 dBA | 72 dBA |
| CO shutoff | Yes | Yes |
| CARB compliant | No | Yes |
| Build | ||
| Starting | Remote, electric and recoil | Electric and recoil |
| App | - | No |
| Wheels | Yes | Yes |
| Dimensions | 26.2 x 25 x 29.6 in | 26.6 x 25.5 x 24.6 in |
| Weight | 216 lb | 152.2 lb |
| Warranty | 5 years | 3 years |
| Released | 2024-01 | 2022-07 |
