From about 3,000 running watts an inverter generator can start and run a 13,500 BTU RV air conditioner, and most in this size have a TT-30 outlet that plugs straight into a 30 A RV. At home they cover a fridge, a freezer, a furnace blower and lights through a transfer switch or inlet. Most have wheels and electric start, since they weigh 90 lb or more.
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 16
- Westinghouse iGen5000DFc#1 of 16Full review
A mid-size dual-fuel generator that can run a 30 A RV or a house’s essentials all night on one tank. Good for buyers who want long run time and remote start.
Amazon $999$9993,9005218$0.26 - Generac iQ3800 DF#2 of 16Full review
A dual-fuel mid-size inverter with long run time and electric start, suited to home essentials and jobsites. RV owners will need an L5-30 adapter for the 30 A outlet.
Amazon $849$8493,000-20$0.28 - Westinghouse iGen4000DFc#3 of 16Full review
A compact dual-fuel generator for travel trailers and essential home circuits, with remote start and CO shutoff. Its small tank is the main trade-off.
Amazon $749.99$749.993,300527$0.23 - Generac iQ5200 DF#4 of 16Full review
A dual-fuel inverter with enough surge for an RV air conditioner and long propane run time. A good fit for home essentials and 30 A campers willing to use an adapter.
Amazon $1,039.75$1,039.753,900-15$0.27 - Predator 5000 Super Quiet Dual Fuel#5 of 16Full review
A strong-value dual-fuel RV and home-backup generator with remote start and long run time. The short warranty is the main catch.
Harbor Freight $999.99$999.993,90060.518.2$0.26 - WEN DF480iX#6 of 16Full review
A light, low-cost dual-fuel inverter for RVs and outages, with CO shutoff and electric start. Plan on frequent refuelling or a propane tank for long runs.
Amazon $647$6474,000627$0.16 - Champion 4500W Dual Fuel Inverter#7 of 16Full review
A quiet dual-fuel inverter for 30 A RVs and outage backup of a fridge, freezer and a few circuits. Propane lets you store it ready to run.
Amazon $988.62$988.623,5006114$0.28 - Ryobi RYi4022X#8 of 16Full review
A simple open-frame inverter for RVs and outage backup with certified low-CO safety. Enclosed rivals are quieter for similar money.
Ryobi $889$8893,400-12$0.26 - A-iPower SUA4300iD#9 of 16Full review
An affordable dual-fuel inverter for RV owners and light home backup that needs to run an air conditioner or fridge on either fuel. Wheels and CO shutoff make it easy to live with.
Amazon $649.99 A-iPower $599.99$599.993,450637.5$0.17 - Champion 4500W Wireless Start Inverter#10 of 16Full review
A quiet mid-size gas inverter for RV owners who want to start it from inside the camper. Strong overnight run time on one tank.
Amazon $900$9003,5006114$0.26 - Champion 4000W Dual Fuel Inverter#11 of 16Full review
A compact dual-fuel inverter for small RVs and basic home backup at a low price per watt. It can just about run a small RV air conditioner, but don’t expect much else alongside it.
Amazon $719$7193,0006410$0.24 - Predator 3500 Super Quiet#12 of 16Full review
A low-cost way to run a 30 A camper with one air conditioner, with electric start and CO shutoff. Expect to buy an extended warranty if you want long-term cover.
Harbor Freight $799.99$799.993,0005711$0.27 - Pulsar PGD40ISCO#13 of 16Full review
A light, inexpensive 4,000 W inverter for RV owners who need to start a rooftop air conditioner without hauling a heavy generator. Expect frequent refueling.
Amazon $450.07$450.073,200594$0.14 - WEN 56380i#14 of 16Full review
An RV-ready mid-size inverter with electric start at a modest price. It lacks CO shutoff, which newer models include.
Amazon $699.99$699.993,400578.5$0.21 - Honda EU3200i#15 of 16Full review
For RV owners who want a quiet, carry-able Honda that can start a rooftop air conditioner on its own. Shoppers who may want to parallel later should look elsewhere.
Amazon $2,799 Amazon (50-state EU3200IAC) $2,899 Camping World $2,399$2,3992,600548.6$0.92 - Yamaha EF3000iSEB Discontinued#16 of 16Full review
For RV owners who find one at clearance price and want long, quiet run times with electric start. At full price it is outclassed by newer, lighter units.
Amazon $1,995 Overton's $1,224.97$1,224.972,8005319$0.44
