WEN DF480iX
#6 in Mid-sizeFull 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$647
3.6/5
A simple open-frame inverter for RVs and outage backup with certified low-CO safety. Enclosed rivals are quieter for similar money.
- 3,400 / 4,000 WRunning / starting
- GasolineFuel
- 12 hr at 50% loadRun time
- 85 lbWeight
- $0.26Price / W
Check price at Ryobi$889
Price checked October 22, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- Shuts itself off if carbon monoxide builds up, and is certified low-CO
- Plugs straight into a 30 A RV, with four household outlets as well
- Long run time on its 3.2-gallon tank
- Three-year warranty
Cons
- Open frame is louder than enclosed inverters
- Pull start only
- 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 | RYi4022X |
|---|---|
| Output | |
| Gasoline | 3,400 W running, 4,000 W starting |
| Outlets | 4 × 120 V, TT-30 (RV) |
| Price per watt | $0.26 |
| Fuel and run time | |
| Fuel | Gasoline |
| Tank | 3.2 gal |
| Run time (gasoline) | 12 hr at 50% load |
| Engine | 212 cc |
| Noise and safety | |
| CO shutoff | Yes |
| Build | |
| Starting | Recoil (pull) |
| Wheels | Yes |
| Weight | 85 lb |
| Warranty | 3 years |
Alternatives in this size
Champion 4500W Dual Fuel Inverter
#7 in Mid-sizeFull 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$988.62
A-iPower SUA4300iD
#9 in Mid-sizeFull 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$599.99
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