A simple open-frame inverter for RVs and outage backup with certified low-CO safety. Enclosed rivals are quieter for similar money.
Ryobi $889
A dual-fuel open-frame inverter for California RV owners and campers who want clean power and propane on a budget. Too loud for quiet campgrounds.
- 4,000 / 5,500 WRunning / starting
- Gasoline, propaneFuel
- 13 hr at 25% loadRun time
- 70 dBA at light loadNoise
- 84.7 lbWeight
- $0.20Price / W
Price checked October 28, 2026. As an Amazon Associate we earn from qualifying purchases.
- Legal to buy in California
- Runs on gasoline or propane, so stored fuel never goes stale
- Clean inverter power for electronics at a modest price
- TT-30R outlet plugs straight into a 30 A RV
- Can be paired with a second Champion inverter for more power
- Open frame is louder than enclosed inverters
- No wheels, and about 85 lb to lift
- 120 V only, so it can’t feed a 240 V transfer switch
The Champion 5500W Open Frame Inverter CARB family
Every Champion 5500W Open Frame Inverter CARB model we rank, smallest first. Ratings compare each against its own size.
| Model | Running / starting | Rating | Price |
|---|---|---|---|
| Champion 5500W Open Frame CARB | 4,000 / 5,500 W | 3.3/5 | $699 |
| Champion 5500W Dual Fuel Open Frame CARB (this one) | 4,000 / 5,500 W | 3.5/5 | $799 |
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 | 201254 |
|---|---|
| Output | |
| Gasoline | 4,000 W running, 5,500 W starting |
| Propane | 3,600 W running, 5,500 W starting |
| Outlets | 2 × 120 V, TT-30 (RV) |
| Parallel capable | Yes |
| Total harmonic distortion | under 3% |
| Price per watt | $0.20 |
| Fuel and run time | |
| Fuel | Gasoline, propane |
| Tank | 2.9 gal |
| Run time (gasoline) | 13 hr at 25% load |
| Run time (propane, 20 lb tank) | 16 hr |
| Engine | 224 cc |
| Noise and safety | |
| Rated noise (light load) | 70 dBA |
| CO shutoff | Yes |
| CARB compliant | Yes |
| Build | |
| Starting | Recoil (pull) |
| App | No |
| Wheels | No |
| Dimensions | 21.3 x 17.9 x 17.9 in |
| Weight | 84.7 lb |
| Warranty | 3 years |
| Released | 2025-12 |
Alternatives in this size
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 $900An 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 $599.99Compare
Compare the Champion 5500W Dual Fuel Open Frame CARB with any other inverter generator →
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