The A-iPower SUA4300iD is the better inverter generator overall, rated 3.5 to 3.3. The A-iPower SUA4300iD leads on CO safety, fuel options and warranty. The WEN 56380i wins on run time. The A-iPower SUA4300iD costs $100 less ($599.99 vs $699.99).
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 $599.99An RV-ready mid-size inverter with electric start at a modest price. It lacks CO shutoff, which newer models include.
Amazon $699.99Prices 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.
Each factor is scored 0-100 against the same fixed reference points for every mid-size inverter generator; a clear win is highlighted. How we rank explains each one.
| Factor weight | A-iPower SUA4300iD | WEN 56380i |
|---|---|---|
| Overall rating | 3.5/5 | 3.3/5 |
| Value 30% | 94 $0.17 per running watt | 86 $0.21 per running watt |
| Quiet 20% | 19 63 dBA at light load, maker rating | 56 57 dBA at light load, maker rating |
| Run time 15% | 12 7.5 hours on a tank at 25% load | 43 11.2 hours on a tank at 25% load (scaled from 50%) |
| Fuel options 10% | 70 gasoline or propane | 0 gasoline only |
| CO safety 10% | 100 shuts off when carbon monoxide builds up | 0 no CO shutoff |
| Warranty 10% | 50 3-year warranty | 25 2-year warranty |
| Starting 5% | 50 starting method not stated (neutral score used) | 80 push-button electric start |
| A-iPower SUA4300iD | WEN 56380i | |
|---|---|---|
| Output | ||
| Gasoline | 3,450 W running, 4,300 W starting | 3,400 W running, 3,800 W starting |
| Propane | 3,100 W running, 3,900 W starting | - |
| Outlets | 2 × 120 V, L5-30 | 2 × 120 V, TT-30 (RV), USB |
| Parallel capable | - | Yes |
| Total harmonic distortion | under 3% | under 1.2% |
| Price per watt | $0.17 | $0.21 |
| Fuel and run time | ||
| Fuel | Gasoline, propane | Gasoline |
| Tank | 1.6 gal | 2.2 gal |
| Run time (gasoline) | 7.5 hr at 25% load | 8.5 hr at 50% load |
| Engine | 149 cc | 212 cc |
| Noise and safety | ||
| Rated noise (light load) | 63 dBA | 57 dBA |
| CO shutoff | Yes | No |
| Build | ||
| Starting | - | Electric and recoil |
| App | No | No |
| Wheels | Yes | Yes |
| Dimensions | 19.7 x 12.2 x 18.5 in | 23.2 x 18 x 20.1 in |
| Weight | 54.8 lb | 99.2 lb |
| Warranty | 3 years | 2 years |
