Westinghouse iGen8200TFc
#1 in LargeFull review
A tri-fuel inverter for home backup through a transfer switch, with clean power and a 50 A outlet. Natural gas hookup makes it a strong pick for long outages.
Amazon $1,399$1,399
The Westinghouse iGen8200TFc is the better inverter generator overall, rated 4.3 to 3.8. The Westinghouse iGen8200TFc leads on run time and value. The Westinghouse iGen8200TFc costs $100.99 less ($1,399 vs $1,499.99).
GENMAX GM8000iETC
#6 in LargeFull review
A mid-priced tri-fuel inverter for home backup through a transfer switch, especially for houses with a natural gas line. Auto start, app control and CO shutoff are unusual at this price.
Amazon $1,499.99$1,499.99
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 iGen8200TFc for run time (17 hours on a tank at 25% load vs 10 hours on a tank at 25% load) and value ($0.21 per running watt vs $0.25 per running watt).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every large inverter generator; a clear win is highlighted. How we rank explains each one.
| Factor weight | Westinghouse iGen8200TFc | GENMAX GM8000iETC |
|---|---|---|
| Overall rating | 4.3/5 | 3.8/5 |
| Value 30% | 76 $0.21 per running watt | 66 $0.25 per running watt |
| Quiet 20% | 75 60 dBA at light load, maker rating | 62 62 dBA at light load, maker rating |
| Run time 15% | 79 17 hours on a tank at 25% load | 29 10 hours on a tank at 25% load |
| Fuel options 10% | 100 gasoline, propane or natural gas | 100 gasoline, propane or natural gas |
| 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% | 100 electric start with a remote fob or app | 100 electric start with a remote fob or app |
Specifications
| Westinghouse iGen8200TFc | GENMAX GM8000iETC | |
|---|---|---|
| Output | ||
| Gasoline | 6,600 W running, 8,200 W starting | 6,000 W running, 8,000 W starting |
| Propane | 5,940 W running, 7,380 W starting | 5,500 W running, 7,250 W starting |
| Natural gas | 5,280 W running | 4,800 W running |
| Outlets | 2 × 120 V, TT-30 (RV) | 2 × 120 V, L5-30, USB |
| Parallel capable | Yes | Yes |
| Total harmonic distortion | under 3% | under 3% |
| Price per watt | $0.21 | $0.25 |
| Fuel and run time | ||
| Fuel | Gasoline, propane, natural gas | Gasoline, propane, natural gas |
| Tank | 3.9 gal | 3.6 gal |
| Run time (gasoline) | 17 hr at 25% load | 10 hr at 25% load |
| Run time (propane, 20 lb tank) | 9.8 hr | - |
| Engine | 298 cc | 312 cc |
| Noise and safety | ||
| Rated noise (light load) | 60 dBA | 62 dBA |
| CO shutoff | Yes | Yes |
| CARB compliant | No | - |
| Build | ||
| Starting | Remote, electric and recoil | Remote, electric and recoil |
| App | No | Yes |
| Wheels | Yes | Yes |
| Dimensions | 27.0 x 20.9 x 21.7 in | 24.0 x 18.5 x 21.1 in |
| Weight | 134.5 lb | 144.6 lb |
| Warranty | 3 years | 3 years |