Champion 11000W Wireless Start Inverter
#8 in LargeFull review
A quiet, large inverter for whole-house backup or a 50 A RV when you want enclosed-inverter noise levels. Gas only, so plan fuel storage.
Amazon $1,899$1,899
3.6/5
At its clearance price, a quiet 240V home-backup inverter for far less than the Honda EU7000iS. Yamaha has stopped making generators, so check the retailer’s final-sale terms first.
- 5,500 / 6,300 WRunning / starting
- GasolineFuel
- 13.3 hr at 25% loadRun time
- 58 dBA at light loadNoise
- 216 lbWeight
- $0.31Price / W
Check price at Overton's$1,679.97
Price checked October 22, 2026. As an Amazon Associate we earn from qualifying purchases.
Discontinued: no longer sold new; the links below may show remaining or used stock.
Pros
- Supplies 240V for a home transfer switch or well pump
- Shuts itself off if carbon monoxide builds up nearby
- Key start, with no choke to fiddle with
- Clearance price is a fraction of the Honda EU7000iS
Cons
- Production has ended, so remaining stock is sold final sale
- Over 200 pounds
- Gasoline only
How it scores
The rating comes from 7 measured or published factors, each scored 0-100 against fixed reference points for its size. How we rank explains each one.
Specifications
| Model number | EF6300iSDE |
|---|---|
| Output | |
| Gasoline | 5,500 W running, 6,300 W starting |
| Outlets | L14-30 |
| Price per watt | $0.31 |
| Fuel and run time | |
| Fuel | Gasoline |
| Tank | 4.5 gal |
| Run time (gasoline) | 13.3 hr at 25% load |
| Engine | 357 cc |
| Noise and safety | |
| Rated noise (light load) | 58 dBA |
| CO shutoff | Yes |
| CARB compliant | No |
| Build | |
| Starting | Electric and recoil |
| App | No |
| Wheels | Yes |
| Dimensions | 30.7 x 24.3 x 27.2 in |
| Weight | 216 lb |
| Warranty | 3 years |
Alternatives in this size
Predator 9500 Super Quiet
#9 in LargeFull review
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$1,999.99
Honda EU7000iS
#10 in LargeFull review
For homeowners who want a quiet, fuel-injected 240V Honda for backup power and will pay a large premium for it. Cheaper dual-fuel inverters offer more watts for the money.
Amazon $4,899 Amazon (50-state EU7000ISNAC) $4,999$4,899
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