Westinghouse iGen2550c
#3 in SmallFull review
A light, quiet camping and tailgating generator with an RV outlet and CO shutoff. Good for running a fridge, lights and electronics in an outage.
Amazon $479$479
The Westinghouse iGen2550c is the better inverter generator overall, rated 3.8 to 3.5. The Westinghouse iGen2550c leads on run time. The Westinghouse iGen2550c costs $117.80 less ($479 vs $596.80).
Generac GP2500i
#5 in SmallFull review
A small, easy-to-carry inverter for camping, tailgating and keeping a fridge and phones running in an outage. Buyers who want an RV outlet or electric start should look one size up.
Amazon $596.80$596.80
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.
Which should you buy?
- Choose the Westinghouse iGen2550c for run time (11 hours on a tank at 25% load vs 8 hours on a tank at 25% load).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every small inverter generator; a clear win is highlighted. How we rank explains each one.
| Factor weight | Westinghouse iGen2550c | Generac GP2500i |
|---|---|---|
| Overall rating | 3.8/5 | 3.5/5 |
| Value 30% | 87 $0.25 per running watt | 82 $0.27 per running watt |
| Quiet 20% | 71 52 dBA at light load, maker rating | 64 53 dBA at light load, maker rating |
| Run time 15% | 70 11 hours on a tank at 25% load | 40 8 hours on a tank at 25% load |
| Fuel options 10% | 0 gasoline only | 0 gasoline only |
| CO safety 10% | 100 shuts off when carbon monoxide builds up | 100 shuts off when carbon monoxide builds up |
| Warranty 10% | 50 3-year warranty | 50 3-year warranty |
| Starting 5% | 0 pull start only | 0 pull start only |
Specifications
| Westinghouse iGen2550c | Generac GP2500i | |
|---|---|---|
| Output | ||
| Gasoline | 1,900 W running, 2,550 W starting | 2,200 W running, 2,500 W starting |
| Outlets | 2 × 120 V, TT-30 (RV), USB | 2 × 120 V, USB |
| Parallel capable | Yes | Yes |
| Total harmonic distortion | under 3% | under 3% |
| Price per watt | $0.25 | $0.27 |
| Fuel and run time | ||
| Fuel | Gasoline | Gasoline |
| Tank | 1.1 gal | 1 gal |
| Run time (gasoline) | 11 hr at 25% load | 8 hr at 25% load |
| Engine | 80 cc | 98 cc |
| Noise and safety | ||
| Rated noise (light load) | 52 dBA | 53 dBA |
| CO shutoff | Yes | Yes |
| CARB compliant | No | - |
| Build | ||
| Starting | Recoil (pull) | Recoil (pull) |
| App | No | No |
| Wheels | No | No |
| Dimensions | 18.5 x 11 x 18 in | 19.7 x 11.4 x 17.9 in |
| Weight | 40 lb | 48 lb |
| Warranty | 3 years | 3 years |