The Predator 9500 Super Quiet is the better inverter generator overall, rated 3.3 to 2.9. The Predator 9500 Super Quiet leads on run time. The Champion 9000W Open Frame CARB wins on warranty.
A low price per watt for whole-house backup through a transfer switch. Buy it in store, or budget for the freight charge, and consider an extended warranty.
Harbor Freight $1,999.99 Harbor Freight (California 72886) $1,999.99A 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 | Predator 9500 Super Quiet | Champion 9000W Open Frame CARB |
|---|---|---|
| Overall rating | 3.3/5 | 2.9/5 |
| Value 30% | 62 $0.26 per running watt | 50 no current price (neutral score used) |
| Quiet 20% | 31 67 dBA at light load, maker rating | 0 72 dBA at light load, maker rating |
| Run time 15% | 89 18.5 hours on a tank at 25% load | 32 10.5 hours on a tank at 25% load |
| Fuel options 10% | 0 gasoline only | 0 gasoline only |
| CO safety 10% | 100 shuts off when carbon monoxide builds up | 100 shuts off when carbon monoxide builds up |
| Warranty 10% | 0 0.2-year warranty | 50 3-year warranty |
| Starting 5% | 80 push-button electric start | 80 push-button electric start |
| Predator 9500 Super Quiet | Champion 9000W Open Frame CARB | |
|---|---|---|
| Output | ||
| Gasoline | 7,600 W running, 9,500 W starting | 7,250 W running, 9,000 W starting |
| Outlets | 4 × 120 V, L5-30, L14-30, USB | 4 × 120 V, L14-30, USB |
| Parallel capable | Yes | No |
| Total harmonic distortion | - | under 3% |
| Price per watt | $0.26 | - |
| Fuel and run time | ||
| Fuel | Gasoline | Gasoline |
| Tank | 6.6 gal | 4.3 gal |
| Run time (gasoline) | 18.5 hr at 25% load | 10.5 hr at 25% load |
| Engine | 459 cc | 420 cc |
| Noise and safety | ||
| Rated noise (light load) | 67 dBA | 72 dBA |
| CO shutoff | Yes | Yes |
| CARB compliant | Yes | Yes |
| Build | ||
| Starting | Electric and recoil | Electric and recoil |
| App | No | No |
| Wheels | Yes | Yes |
| Dimensions | 31 x 23.75 x 28.87 in | 26.6 x 25.5 x 24.6 in |
| Weight | 257 lb | 152.2 lb |
| Warranty | 0.2 years | 3 years |
| Released | 2024-04 | 2022-07 |
