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Westinghouse 12,500W EFI Dual Fuel Review

Name: Westinghouse 12,500W EFI Dual Fuel
Brand: Westinghouse
SKU: B0F5ZK2XPS

7.9Very good · out of 10#4 of 5 in our 10,000 Watt Generators ranking

Written from the listing's specs, not from our own use · How we rate

9,500 running and 12,500 peak watts, the choice of gasoline or propane and a 50 amp outlet for an inlet box or an RV: the Westinghouse 12,500W EFI Dual Fuel covers what matters most in a generator. A strong pick for whole-house backup through a transfer switch, and one of our top five 10,000 watt generators.

Price$1,399Price on Sep 30, 2026 · may have changed

Check the price on Amazon ↗Affiliate link · price and stock on Amazon

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Specifications

Brand	Westinghouse
Category	Dual fuel generators
Running output	9500 W
Peak output	12500 W
Listed fuels	gasoline, propane
Propane running watts	8,500 W, per the listing
Stated runtime	Up to 15 hours
Fuel tank	6.6 gallons
CO sensor	Stated in the listing
Transfer switch ready	Stated in the listing
Outlets named in the listing	50 A (14-50R), L14-30R, GFCI household
Fuel injection (EFI)	Stated in the listing
Engine	457 cc
Stated warranty	3 years
CARB compliant	Stated in the listing
ASIN	B0F5ZK2XPS

Full listing title: Westinghouse 12500 Peak Watt EFI Dual Fuel Home Backup Portable Generator, Remote Electric Start, Transfer Switch Ready, Gas and Propane Powered, CO Sensor, CARB Compliant

Listing evidence

Running output	Exact listing
Peak output	Exact listing

Updated October 2026

Exact listing, ASIN B0F5ZK2XPS

Rating method published

Compared with its closest rivals

The two picks next to it in our 10,000 watt generators ranking, with their rating and a dated price.

Compare side by side ↗

Westinghouse 12,500W EFI Dual Fuel

7.9Very good · out of 10$1,399 Price on Sep 30, 2026 · may have changed

Stated: 9,500 W running · 12,500 W peak · Gasoline, Propane
Dual fuel generators

This product ↑

Westinghouse 12,500W Dual Fuel CO Sensor

7.9Very good · out of 10$1,049 Price on Sep 30, 2026 · may have changed

Stated: 9,500 W running · 12,500 W peak · Gasoline, Propane
Dual fuel generators

See the review ↗

Westinghouse 12,500W EFI Tri-Fuel

7.9Very good · out of 10$1,449 Price on Sep 30, 2026 · may have changed

Stated: 9,500 W running · 12,500 W peak · Gasoline, Propane, Natural gas
Dual fuel generators

See the review ↗

9,500 running watts, 12,500 at start-up

That's the running figure the listing states, on gasoline; on propane it drops to 8,500. On paper that covers the fridge, the freezer, the sump pump and, through a transfer switch, the furnace or a well pump; the start-up surge of the biggest motor is the number to check.

Why it made our list

What changes on the night the power goes out

Gasoline or propane. Propane keeps for years in a sealed tank and won't gum up the carburetor between storms; gasoline gives you more watts. The listing puts propane at 8,500 running watts.

50 amp outlet. The big plug that feeds a 50 amp inlet box, a transfer switch or a 50 amp RV. One cord carries both legs of 240 V, which is how the well pump and the furnace get power without extension cords through a window.

Extension cords or a transfer switch?

Extension cords: run a heavy cord from the Westinghouse 12,500W EFI Dual Fuel's 120 V outlets (GFCI-protected, per the listing) to the fridge and the freezer, and you're set for a night. Hard-wired loads like the furnace and the well pump can't join in that way.

A transfer switch: the listing names an L14-30R twist-lock and a 50 amp outlet, and the seller calls it transfer-switch ready. With an inlet box and a transfer switch or interlock wired by an electrician, one cord feeds the panel, furnace and well pump included. Book that visit before storm season, not during the outage.

Great for you if…

You want most of the house running, not just the fridge
You'd rather store propane tanks than cans of gas
You plan a transfer switch, or you own a 50 amp RV

Skip it if…

You need quiet power for a campsite: this is a big open frame
You simply want our top pick: that's the DuroMax XP12000EH (9.3/10)
You'd rather wait for buyer reviews: none are captured for this listing yet

What Westinghouse promises

The seller states, word for word, in the Westinghouse 12,500W EFI Dual Fuel listing:

12,500 peak watts, 9,500 running watts (gasoline).
Features one 120/240V 14–50R 50A outlet for home or RV and one 120/240V L14-30R 30A twist lock.
Equipped with 457cc Westinghouse 4-stroke OHV engine with durable cast iron sleeve.
Electronic fuel injection delivers higher power and torque, reduces fuel use and emissions, increases engine reliability, and needs less maintenance.

The seller's claims, quoted as written; we haven't measured any of it. The noise on your driveway and the surge of your well pump are things you only find out at home.

Westinghouse 12,500W EFI Dual Fuel, view 3

Outlets, fuel and what's in the box

What the Westinghouse 12,500W EFI Dual Fuel listing names:

9,500 running watts, 12,500 peak
Runs on gasoline and propane
8,500 running watts on propane
Outlets named: 50 amp, L14-30R, GFCI 120 V
Sold as transfer-switch ready
Remote and electric start
CO sensor
6.6 gallon tank, up to 15 h
457 cc engine with fuel injection
CARB compliant

Warranty & support: A 3-year warranty, as stated in the listing · CARB compliance stated (all 50 states).

That is the maker's promise, not ours. Keep the order confirmation, and register the Westinghouse 12,500W EFI Dual Fuel if the maker asks you to.

Read the manual for the fuel, the oil grade and what each outlet is rated for before the first start.

Westinghouse 12,500W EFI Dual Fuel, view 4

Price and cost per 1,000 running watts

$1,399 Price on Sep 30, 2026 · may have changed

At the price on Sep 30, 2026, each 1,000 running watts works out at about $147.26 (price ÷ stated running watts, our arithmetic). That puts it around the middle of the 37 generators above 8,000 running watts we have a price and a stated running figure for.

Add the hookup to the budget: a heavy cord, an inlet box and an electrician's visit for the transfer switch or interlock.

The button opens the exact listing (ASIN B0F5ZK2XPS), where today's price, stock and seller apply.

Westinghouse 12,500W EFI Dual Fuel, view 5

A better fit for your load list?

Want it quieter, or cleaner power for electronics? The Champion 11,000W Dual Fuel Inverter (7.8/10) is an inverter, per its listing.

Want to hook it to the gas line? The Westinghouse 13,500W Tri-Fuel (9.2/10) runs on gasoline, propane and natural gas.

Want a CO shutoff? The WEN 14,500W Tri-Fuel, CO Watchdog (7.8/10) names a CO sensor that shuts the engine off.

Our take

The verdict

We like the Westinghouse 12,500W EFI Dual Fuel for 9,500 running and 12,500 peak watts and the choice of gasoline or propane. No buyer has reviewed it yet, so our 7.9/10 comes from the spec sheet alone. Our main reservation: the DuroMax XP12000EH sitting above it at 9.3/10. We'd pick it if you want most of the house running, not just the fridge; otherwise, put it next to the Westinghouse 12,500W Dual Fuel CO Sensor first.

Check the price on Amazon ↗Affiliate link · price and stock on AmazonSee the 10,000 watt generators ranking →

Living with it

Delivery day

Fill it with oil before the first start, then run it for a few minutes outside with a small load.

The first outage

Start it with the fob, let it warm up, then add loads one at a time, the biggest motor first. Propane or gas: decide before the storm and have the hose and the tank ready. The 15 hours on the listing are at a light load; plan a refill at night.

Between storms

Run it every month or so for 20 minutes and keep the battery charged. On propane you avoid stale gas in the carburetor; on gas, add stabiliser or run it dry before storage. Our maintenance schedule has the full list.

Upkeep

First oil change after the break-in hours in the manual (the hour meter counts them), then on schedule. Air filter and spark plug once a season, and a cover for the months it sits.

The one thing we'd check first

Before you order the Westinghouse 12,500W EFI Dual Fuel, check the propane rating: it is rated 8,500 running watts on propane against 9,500 on gas, so size your list for the fuel you will actually use.

Before you buy

Your load list

9,500 running watts and 12,500 at start-up, per the listing. Write down what has to run at the same time, add the biggest motor surge (well pump, sump pump, AC), and let our sizing calculator do the sums.

How it reaches the house

It has a 50 amp outlet, which still needs an inlet box and a transfer switch or interlock installed by an electrician. Our transfer switch guide explains the options.

Where it will run

Outside only, about 20 ft from doors, windows and vents, exhaust pointing away (the CO sensor is a backup, not a permission). Pick the spot now, before the storm. Our CO safety and placement guide has the details.

Fuel for three days

A 20 lb tank lasts far less than a day at half load on most big units; two or three full tanks make a realistic plan. Our fuel storage guide covers storing them safely.

How it compares

How the Westinghouse 12,500W EFI Dual Fuel stacks up against the closest alternative in our ranking, the Westinghouse 12,500W Dual Fuel CO Sensor.

Criterion	Westinghouse 12,500W EFI Dual Fuel	Westinghouse 12,500W Dual Fuel CO Sensor
Our rating	7.9/10	7.9/10
Runtime	15 h	Not stated
Warranty	3 years	Not stated

Both score 7.9/10. The Westinghouse 12,500W EFI Dual Fuel brings a longer stated runtime (15 h) and a longer stated warranty (3 years), so it has the edge on paper.

Compare side by side ↗See the Westinghouse 12,500W Dual Fuel CO Sensor review →

The score in detail

How we rated it

Our score: 7.9/10

Key specifications

9 / 10

Build, warranty & certifications

8 / 10

Listing documentation

9 / 10

Fit & compatibility

8 / 10

This product has no captured buyer-review record yet, so its rating comes from the documented listing alone: four criteria scored out of 10 (key specifications; build, warranty and certifications; listing documentation; fit and compatibility), placed on a 4.5–8.5 scale. Read the full methodology.

Read the methodology →

Frequently asked questions

Is the Westinghouse 12,500W EFI Dual Fuel any good?

We rate it 7.9/10 (very good), #4 of 5 in our 10,000 watt generator ranking. The rating comes from its documented listing alone, as no customer-review record is captured yet.

How many watts does the Westinghouse 12,500W EFI Dual Fuel deliver?

The listing or manual states 9,500 W running and 12,500 W peak, usually for gasoline. Size your load list against the running watts and keep the peak for motor starts; propane and natural gas ratings are lower. These are the seller's figures, not our measurements (our sizing calculator turns your loads into a running and peak pair).

Which fuels does the Westinghouse 12,500W EFI Dual Fuel run on?

The listing names gasoline and propane. Output differs by fuel, so check the per-fuel running watts in the manual and whether the hoses you need come in the box. Run it outdoors only, away from doors, windows and vents.

What do you get with the Westinghouse 12,500W EFI Dual Fuel?

Its listing states 9,500 running watts (12,500 at start-up), the choice of gasoline or propane, a 50 amp outlet for an inlet box or an RV, a built-in CO sensor, remote start from a key fob and up to 15 hours on a 6.6-gallon tank. These are the seller's figures, not our measurements: how loud it is in your driveway and how it handles your well pump's surge can't be read from a listing.

What should I check before ordering the Westinghouse 12,500W EFI Dual Fuel?

Your load list: 9,500 running watts and 12,500 at start-up, per the listing. Write down what has to run at the same time, add the biggest motor surge (well pump, sump pump, AC), and let our sizing calculator do the sums. How it reaches the house: it has a 50 amp outlet, which still needs an inlet box and a transfer switch or interlock installed by an electrician. Our transfer switch guide explains the options. Where it will run: outside only, about 20 ft from doors, windows and vents, exhaust pointing away (the CO sensor is a backup, not a permission). Pick the spot now, before the storm. Our CO safety and placement guide has the details. Fuel for three days: a 20 lb tank lasts far less than a day at half load on most big units; two or three full tanks make a realistic plan. Our fuel storage guide covers storing them safely.

Where can I buy the Westinghouse 12,500W EFI Dual Fuel?

We link to the exact listing on Amazon, where today's price, stock and seller apply. It is an affiliate link, and it has no effect on the rating.

Have you used the Westinghouse 12,500W EFI Dual Fuel yourselves?

No, we haven't used it ourselves. Everything on this page comes from its listing, read line by line and weighed with our published formula, plus our editors' read of how it compares with its rivals.

Keep comparing

If the Westinghouse 12,500W EFI Dual Fuel hasn't sold you yet, see where it ranks or browse all dual fuel generators.

Where it ranks

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