Westinghouse WGen9500DF (no CO sensor)

Westinghouse pitches the WGen9500DF as “a backup power source for larger homes” that can also power a travel trailer or jobsite. This is the version without a CO sensor: the maker's spec table says “Carbon Monoxide (CO) Sensor: No”. Two siblings share its 457 cc engine and wattage: the carbureted WGen9500DFc (CO sensor with automatic shutdown, 212.1 lb) and the fuel-injected WGen9500DFc EFI (CO sensor, 221 lb, longer published run times, CARB compliant). Westinghouse showed it as unavailable online and left it out of its catalog when we read the page.

Running vs starting watts

On gasoline it is rated 9,500 running and 12,500 peak watts; on propane, 8,500 running and 11,200 peak. The 12,500 W in the listing is the peak figure, available only for the moment a motor starts, so everything that runs continuously has to fit under the running figure. On its own it can start a 1/2 HP well pump, a 13,500 BTU RV air conditioner or a French-door refrigerator on either fuel; for several loads at once, use the largest-motor rule.

Run time

Westinghouse publishes 12 hours at 25 % load and 8 hours at 50 % load on the 6.6-gallon gasoline tank, and 7 hours at 50 % load on propane. The description ties the propane figure to a 20 lb tank. We show only these points and do not extrapolate between them. This is a conventional generator, not an inverter: its output frequency follows engine speed, and Westinghouse's description gives no harmonic-distortion (THD) figure, so check the owner's manual before connecting sensitive electronics.

Safety

With no CO sensor, nothing on this generator shuts it down if exhaust builds up, so placement is the only protection: CPSC says to run a portable generator outdoors only, away from the house, with the exhaust pointed away from buildings. The two DFc versions add the sensor. Our CPSC recall search found no recall for this model.

Add your appliances to the calculator to check your own load against these figures.