
Westinghouse iGen12000TFcWestinghouse iGen12000TFc Tri-Fuel 12000W
9000 running watts, tri-fuel and 19 hours at quarter load.
- Running watts (gas)
- 9000 W
- Noise level
- 64 dBA
- Weight
- 191.0 lb
An inverter generator produces clean, stable power that is safe for laptops, phones, TVs and modern appliances, and it runs much quieter and more efficiently than an old open-frame generator. For a power outage, look at running watts for the appliances you need at once, plus fuel type, runtime and outlets such as RV and 240V. For camping and RVs, weight and noise matter more. CO shutdown sensors add real safety. We put 39 inverter generators on one spec sheet so you can compare them side by side.
Quick answer
Ranked from 39 portable inverter generators that met our standard, compared on running watts, noise level, quarter-load runtime.
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9000 running watts, tri-fuel and 19 hours at quarter load.

5100 running watts with 240V, RV outlet and CO shutdown.

4000 running watts, dual fuel and a CO sensor.
| Spec | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Best Scoreout of 100 | 63 | 55 | 55 | 53 | 51 | 49 | 52 | 45 | 46 | 45 |
| Running watts (gas)W | 9000 W (best in row) | 5100 W | 4000 W | 2900 W | 3900 W | 3400 W | 3200 W | 3500 W | 3500 W | 3000 W |
| Peak watts (gas)W | 12000 W (best in row) | 6800 W | 4800 W | 3600 W | 5000 W | 4400 W | 4000 W | 4500 W | 4500 W | 4000 W |
| Fuel type | Tri-fuel (best in row) | Dual fuel | Dual fuel | Dual fuel | Dual fuel | Gasoline | Gasoline | Gasoline | Dual fuel | Dual fuel |
| Noise leveldBA | 64 dBA | 64 dBA | 62 dBA | 65 dBA | 52 dBA (best in row) | 72 dBA | 59 dBA | 61 dBA | 61 dBA | 64 dBA |
| Runtime at 25% loadhr | 19.0 hr (best in row) | — | — | — | — | 14.0 hr | — | — | 14.0 hr | 10.0 hr |
| Fuel tank capacitygal | 7.9 gal (best in row) | — | — | 1.5 gal | 3.4 gal | 2.0 gal | — | 2.3 gal | 2.3 gal | 1.5 gal |
| Weightlb | 191.0 lb | 99.2 lb | 78.5 lb | 49.0 lb | 104.7 lb | 56.0 lb | 47.0 lb (best in row) | 54.0 lb | 99.2 lb | 51.8 lb |
| Start type | Remote electric (best in row) | Electric | Electric | — | Remote electric (best in row) | — | — | Recoil | Electric | Recoil |
| RV outlet (TT-30R) | — | Yes | Yes | Yes | Yes | Yes | — | Yes | Yes | Yes |
| 240V outlet | Yes (best in row) | Yes (best in row) | No | No | — | — | — | No | — | No |
| CO shutoff sensor | Yes | Yes | Yes | Yes | — | — | — | — | Yes | Yes |
| THD (clean power) | ≤3% | <0.3% no load, <1.2% full load | <0.3% no load, <1.2% full load | <0.3% no load, <1.2% full load | <3% THD | — | Under 3% | Low THD 0.2%-1.2% | — | <3% |
| Warrantyyr | — | 3 years (best in row) | 3 years (best in row) | 3 years (best in row) | 3 years (best in row) | — | 2 years | 3 years (best in row) | 3 years (best in row) | 3 years (best in row) |
We reviewed 62 portable inverter generators and kept only the 39 that pass every check below. Those are ranked by a Best Score built from spec fit for this job, sales rank.
These reviews are based on each generator's published specifications and listing information, in the order of our ranking.
Westinghouse iGen12000TFc for whole-home backup
The Westinghouse iGen12000TFc leads our ranking. It delivers 9000 running watts and 12000 peak watts, the most on this page, enough to run a refrigerator, sump pump, furnace fan, lights and more at the same time during an outage. Westinghouse lists ≤3% THD, so the power is safe for sensitive electronics.
It is tri-fuel, which means it can run on gasoline and other fuels for flexibility in long outages. A heavy duty 457cc engine with Eco Mode, insulation and mufflers keeps noise as low as 64 dBA, and inverter technology cuts fuel use by matching engine speed to demand. It runs up to 19 hours at quarter load on a 7.9 gallon tank, the longest runtime here.
A 120/240V 14-50R 50A outlet and an L14-30R 30A twist lock are both ready for a transfer switch or interlock kit, and it starts by remote. At 191 lb it is the heaviest generator here, so it stays at home rather than going camping. For backing up a house, it is the best choice on this page.
VerdictThe best inverter generator here for home backup.
WEN DF680iX with 240V output and CO shutdown
Second in our ranking, the WEN DF680iX is a dual fuel inverter generator with a 224cc engine producing 6800 surge watts and 5100 rated watts on gasoline, or 6000 surge and 4500 rated on propane. That covers a refrigerator, well pump or window AC plus lights during an outage.
Its bonded-neutral 240V configuration supports 240V tools and even low-power Level 2 charging for electric and hybrid vehicles, which is unusual at this size. It includes an RV outlet, and WEN lists THD under 0.3% at no load for clean power.
The WEN Watchdog CO Shutdown Sensor turns the generator off if carbon monoxide reaches dangerous levels, an important safety feature. A fuel shutoff runs the carburetor dry before stopping, which helps long-term reliability. It weighs 99.2 lb, runs at 64 dBA and carries a 3-year warranty. For homes that need 240V without a large generator, it is excellent value.
VerdictThe best mid-size generator for home use.
WEN DF480iX, a quiet dual fuel middle option
The WEN DF480iX ranks third. Its 224cc dual fuel engine gives 4800 surge watts and 4000 rated watts on gasoline, and 4320 surge and 4000 rated watts on propane, so you lose little power when switching fuel.
WEN says it is extremely quiet, comparable to normal conversation, and lists 62 dBA. Clean power under 0.3% THD at no load protects phones, tablets and laptops, and the WEN Watchdog CO Shutdown Sensor adds safety. It has an RV outlet and electric start.
At 78.5 lb it is lighter than the 6800W WEN but still a two-hand lift. It does not have a 240V outlet. It carries a 3-year warranty. For RV owners and homeowners who want enough power for essentials with lower noise, it hits a good balance. Run it outdoors away from windows and doors, and use heavy-duty extension cords sized for the load to get the most from its output.
VerdictA balanced dual fuel choice for RVs and homes.
WEN DF360iX, a portable dual fuel generator
Fourth in our ranking, the WEN DF360iX produces 3600 surge watts and 2900 rated watts on gasoline, or 3500 surge and 2600 rated on propane. That runs a small RV air conditioner, a refrigerator or camping gear.
At 49 lb it is the lightest generator in our top five, so one person can lift it into a truck bed. WEN says it is as quiet as a normal conversation and lists 65 dBA. Clean power protects electronics, and the Watchdog CO Shutdown Sensor adds safety.
Its 1.5 gallon tank is small, so plan for refuelling on long days. It has an RV outlet but no 240V outlet, and carries a 3-year warranty. For campers, tailgaters and small homes that need portable power, it is a practical choice. Carry a spare propane tank on longer trips, since switching fuels keeps it running when the small gas tank runs dry overnight.
VerdictThe best portable dual fuel option here.
Westinghouse iGen4500DF, the quietest in our top five
The Westinghouse iGen4500DF completes our top five. It delivers 5000 peak and 3900 rated watts at less than 3% THD, on gas or propane, and runs as low as 52 dBA, the quietest generator in our top five, which campgrounds and neighbors will appreciate.
Westinghouse lists up to 18 hour run time on its 3.4 gallon gas tank in Economy Mode. A rotating LED data center shows fuel level, power output, remaining run time, voltage and lifetime hours, which helps plan refuelling in an outage.
Outlets include a 5-20R 120V duplex, an RV-ready TT-30R 30 Amp outlet and two USB outlets. It starts with a remote key fob, electric start or recoil, and has a telescoping handle and wheels for its 104.7 lb weight. For RV owners who value quiet running, it is an excellent pick.
VerdictThe quietest choice in our top five.
Best among the reviewed tools
Add up the running watts of what you need at once, plus the starting surge of the biggest motor. Generators here run from 1900 to 9000 running watts.
Dual fuel and tri-fuel generators run on propane as well as gasoline. Propane stores longer and is easier in outages, with slightly less power.
Inverter generators here run from 51 to 72 dBA. Weights range from 39 lb to 191 lb. Light, quiet models suit camping; big ones suit home backup.
RV and 240V outlets and transfer switch readiness matter for home backup. CO shutdown sensors switch the generator off if carbon monoxide builds up.
For essentials like a refrigerator, lights and a furnace fan, 3000 to 5000 running watts. For most of a home, look at 9000 running watts or more.
Inverter generators produce clean power safe for electronics, run quieter and use less fuel than traditional generators.
Yes for outages. Propane stores for years and is easy to find, while gasoline goes stale. You get flexibility when fuel is scarce.
No. Always run generators outdoors, away from windows and doors. CO sensors help, but carbon monoxide is deadly.
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