Westinghouse vs WEN inverter generators: how do they compare?

Westinghouse and WEN both sell budget-to-mid inverter generators, and both put a carbon monoxide shut-off on the models below. The fair way to compare them is by size. Here are two matched pairs.

We compared these from the makers' published specs; we haven't tested them. Figures come from each maker's spec page or owner's manual, checked on October 1, 2026.

Small pair: iGen2550DFc vs 56250iX (about 2,500 W)

Spec	Westinghouse iGen2550DFc	WEN 56250iX
Fuel	Gas or propane (dual fuel)	Gas only
Running watts (gas)	1,900 W	1,900 W
Starting watts (gas)	2,550 W	2,500 W
Running watts (propane)	1,700 W	—
Fuel tank	1.1 gal	1 gal
Run time on gas	11 h at 25%, 7 h at 50%	4.8 h at 50%
Run time on a 20 lb propane tank	25 h at 25%, 20 h at 50%	—
Noise (maker's figure)	52 dBA (distance and load not stated)	65 dBA at 25% load (distance not stated)
Outlets	5-20R duplex, TT-30R (30 A RV), 2 USB	2 × 5-20R, 2 USB
Weight	43.2 lb (dry)	37.5 lb
CO shut-off	Yes	Yes (CO Watchdog)
Parallel capable	Yes	Yes (with WEN's kit)
CARB compliant	No	No

What stands out: Same running watts. The Westinghouse adds propane and an RV outlet, and lists longer gas run times on a slightly bigger tank. The WEN is 5.7 lb lighter. The two noise figures were measured under different conditions, so don't compare them directly.

Mid pair: iGen4000DFc vs DF480iX (about 4,000–4,800 W)

Spec	Westinghouse iGen4000DFc	WEN DF480iX
Fuel	Gas or propane	Gas or propane
Running watts (gas)	3,300 W	4,000 W
Starting watts (gas)	4,000 W	4,800 W
Running watts (propane)	2,970 W	3,600 W
Fuel tank	1.69 gal	1.9 gal
Run time on gas	7 h at 25%	7 h at 50%
Run time on a 20 lb propane tank	17 h at 25%	12 h at 50%
Noise (maker's figure)	52 dBA (distance and load not stated)	62 dB at 25% load (distance not stated)
Outlets	5-20R duplex, TT-30R, 2 USB	4 × 5-20R, TT-30R, 12 V DC, 2 USB
Weight	62.8 lb (dry)	78.5 lb
Start	Electric, remote key fob, recoil	Electric start
CO shut-off	Yes	Yes (CO Watchdog)
CARB compliant	No	No

What stands out: The WEN lists 700 more running watts on gas and 630 more on propane. It also has more 120 V outlets and a 12 V DC outlet. The Westinghouse is 15.7 lb lighter and adds a remote-start fob. The run times were published at different loads (25% vs 50%), so they can't be compared head to head.

Brand differences you can check

• Warranty. Westinghouse lists a 3-year limited residential warranty (1 year commercial). WEN's manuals give 3 years or 500 hours of personal use, whichever comes first, and 90 days for professional or commercial use.
• Distortion (THD). Westinghouse publishes ≤3% total harmonic distortion on both inverter models. WEN's pages say the power is safe for sensitive electronics but don't give a THD figure.
• CARB. None of these four is listed as CARB compliant, so check before you buy in California. See CARB-compliant generators.
• Parallel. All four can pair with a second matching unit through a parallel kit. See parallel inverter generators.

Why propane watts are lower

Every dual-fuel model here is rated lower on propane, by about 10%. The iGen4000DFc drops from 3,300 to 2,970 running watts; the DF480iX drops from 4,000 to 3,600. Size for the propane number if propane is your main fuel. Dual fuel vs gas generators explains the trade-offs.

Worked example: an RV with a 13,500 BTU AC

Champion's chart lists a 13,500 BTU RV AC at 1,500 to 2,000 running watts and 2,800 to 3,500 starting watts.

• Small pair: 2,500 to 2,550 starting watts is below that surge. Without a soft-start kit, the AC may not start.
• Mid pair: both clear 3,500 starting watts on gas. On propane, the iGen4000DFc's peak is 3,600 W, which is close to the top of that range.

Check your AC's own label. See 2,000 watt generator and a 13,500 BTU RV AC.

Who each suits

• Westinghouse iGen2550DFc: someone who wants the option of propane at the 2,500 W size, with a TT-30R RV outlet.
• WEN 56250iX: someone who only needs gas and wants the lightest unit here (37.5 lb) for camping, tailgating or a fridge and lights.
• Westinghouse iGen4000DFc: someone who wants a lighter mid-size unit (62.8 lb) with remote start.
• WEN DF480iX: someone who wants the most running watts in this group, more outlets and a 12 V DC outlet, and can handle 78.5 lb.

Safety: Run it outdoors only, 20+ feet from the house, away from windows and doors. Read our carbon monoxide guide.