Large inverter generators are built for home backup: with an L14-30 outlet and a transfer switch or inlet they can run a well pump, a furnace, a fridge and most of a house’s circuits, and many also power a 50 A RV. They burn a lot more fuel than the smaller sizes, so a long run time on a tank and a propane option matter more here.
Prices 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.
Full ranking 11
- Westinghouse iGen8200TFc#1 of 11Full review
A tri-fuel inverter for home backup through a transfer switch, with clean power and a 50 A outlet. Natural gas hookup makes it a strong pick for long outages.
Amazon $1,399$1,3996,6006017$0.21 - DuroMax XP9500iH#2 of 11Full review
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 $1,999$1,9997,6006121$0.26 - Westinghouse iGen12000DFc#3 of 11Full review
A large dual-fuel inverter for whole-home backup with clean power and long run time. Best for homeowners with a transfer switch who want inverter quiet at open-frame output.
Amazon $1,899$1,8999,0006419$0.21 - Champion 6500W Tri Fuel Inverter#4 of 11Full review
A mid-size home-backup inverter for people with a natural gas line or a transfer switch who want unattended starting. It also covers a 30 A RV.
Amazon $1,299$1,2995,2506418$0.25 - WEN TF1050iX#5 of 11Full review
A tri-fuel home-backup inverter that can sit on natural gas indefinitely. Good for a transfer switch or a 50 A RV.
WEN $1,649$1,6498,5506610.5$0.19 - GENMAX GM8000iETC#6 of 11Full review
A mid-priced tri-fuel inverter for home backup through a transfer switch, especially for houses with a natural gas line. Auto start, app control and CO shutoff are unusual at this price.
Amazon $1,499.99$1,499.996,0006210$0.25 - Champion 10000W Tri Fuel Open Frame#7 of 11Full review
A big, low-cost-per-watt open-frame inverter for whole-house backup on gas, propane or natural gas. Too loud for campgrounds.
Amazon $1,398.82$1,398.827,7507215$0.18 - Champion 11000W Wireless Start Inverter#8 of 11Full 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$1,8999,0006415$0.21 - Predator 9500 Super Quiet#9 of 11Full 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$1,999.997,6006718.5$0.26 - Honda EU7000iS#10 of 11Full 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$4,8995,5005216$0.89 - Yamaha EF6300iSDE Discontinued#11 of 11Full review
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.
Overton's $1,679.97$1,679.975,5005813.3$0.31
