Westinghouse Tri Fuel Generators: Which Size Backs Up Your Home?
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Westinghouse is one of the most familiar names in portable generators for home backup, and its tri fuel models are popular because they run on three fuels: gasoline, propane and natural gas. That matters in a long outage. Gasoline can be hard to find after a storm, propane stores for a long time in tanks, and natural gas can come straight from your home’s gas line if a professional connects it. Every model here also has a carbon monoxide (CO) sensor that shuts the engine down if dangerous fumes build up.
The six Westinghouse tri fuel generators below range from an 8,200 peak watt inverter to an 18,000 peak watt V-Twin, and they differ in wattage, noise and design: four are traditional open-frame generators and two are quieter inverter models with low THD, so the right size depends on how much of your home you want to power.
Westinghouse Tri Fuel Generators Compared
| Model | Gas peak / running watts | Natural gas peak / running watts | Type | Listed runtime and tank |
|---|---|---|---|---|
| Westinghouse 14500 Peak Watt Tri-Fuel (WGen11500TFc) | 14,500 / 11,500 | 12,000 / 9,500 | Open frame | Up to 19 hrs, 9.5 gal |
| Westinghouse 13500 Peak Watt Tri-Fuel (WGen10500TFc) | 13,500 / 10,500 | 10,000 / 8,500 | Open frame | Up to 19 hrs, 9.5 gal |
| Westinghouse 8200 Peak Watt Tri-Fuel Inverter (iGen8200TFc) | 8,200 / 6,600 | 6,560 / 5,280 | Inverter | Up to 17 hrs at 25% load, 3.9 gal |
| Westinghouse 12000 Peak Watt Tri-Fuel Inverter (iGen12000TFc) | 12,000 / 9,000 | 9,800 / 7,200 | Inverter | Up to 19 hrs at 25% load, 7.9 gal |
| Westinghouse 18000 Peak Watt Tri-Fuel (WGen14500TFc) | 18,000 / 14,500 | 14,400 / 11,600 | Open frame, V-Twin | Up to 16 hrs at 25% load, 10.5 gal |
| Westinghouse 12500 Peak Watt EFI Tri-Fuel (WGen9500TFc) | 12,500 / 9,500 | 9,500 / 7,500 | Open frame, EFI | Up to 15 hrs, 6.6 gal |
Westinghouse 14500 Peak Watt Tri-Fuel Home Generator for Larger Homes
Westinghouse
Westinghouse 14500 Peak Watt Tri-Fuel Home Backup Portable Generator, Remote Electric Start, Transfer Switch Ready, Gas, Propane, and Natural Gas Powered
Price and specifications are read from the Amazon product page and can change.
Westinghouse 14500 Peak Watt Tri-Fuel Home
Best for: Larger homes wanting long gas runtime
Pros
- 11,500 running watts on gas
- Up to 19 hours on 9.5 gal
- 550cc cast iron sleeve engine
- CO sensor and GFCI outlets
Cons
- Loud open-frame design
- Outlet list not fully detailed
The Westinghouse 14500 Peak Watt Tri-Fuel Home Backup Generator (WGen11500TFc) is aimed at larger homes. It delivers 14,500 peak and 11,500 running watts on gasoline, 13,500 and 10,500 on propane, and 12,000 and 9,500 on natural gas. Peak watts are the short burst available when a motor like a fridge compressor starts; running watts are what the generator can supply steadily, and that is the number to size around.
A 550cc 4-stroke OHV engine with a cast iron sleeve runs up to 19 hours on its 9.5 gallon tank, or up to 7 hours on a 20 lb propane tank. It has a fuel gauge, hour meter, automatic low oil shutdown, GFCI outlets and less than 5% THD. THD (total harmonic distortion) measures how clean the power is; lower is safer for electronics. The title mentions remote electric start and transfer switch readiness, and it carries a 3-year limited service, labor and parts coverage. The specs list only two outlets, and the listing does not detail the full outlet panel.
It suits a household that wants to run many circuits through a transfer switch for long stretches. If you want quieter operation, the 12,000 watt inverter comes close in output with much less noise.
Westinghouse 13500 Peak Watt Tri-Fuel Home Generator for Mid-Size Homes
Westinghouse
Westinghouse 13500 Peak Watt Tri-Fuel Home Backup Portable Generator, Remote Electric Start, Transfer Switch Ready, Gas, Propane, and Natural Gas Powered
Price and specifications are read from the Amazon product page and can change.
Westinghouse 13500 Peak Watt Tri-Fuel Home
Best for: Mid-size homes and RV owners
Pros
- 10,500 running watts on gas
- Remote start key fob
- L14-30R and 14-50R outlets
- Oil, funnel and tool kit included
Cons
- Lower natural gas output
- Heavy open-frame build
The Westinghouse 13500 Peak Watt Tri-Fuel Home Backup Generator (WGen10500TFc) offers 13,500 peak and 10,500 running watts on gas, 12,500 and 9,500 on propane, and 10,000 and 8,500 on natural gas. It starts by remote key fob, push button or recoil.
Its outlet panel is clearly listed: two GFCI 120V 5-20R household outlets, one transfer switch ready L14-30R 30A outlet and one RV ready 14-50R 50A outlet, all with rubber covers. A 500cc engine with a cast iron sleeve runs up to 19 hours on a 9.5 gallon tank, with automatic low oil and CO shutdown and a digital hour meter. The box includes the key fob, a 12V battery charger, oil, a funnel, a tool kit and a manual. One spec field lists the fuel type as natural gas only, which conflicts with the tri fuel description everywhere else.
This is a solid all-rounder for a mid-size home or for RV owners who want one generator for both. If you are comparing it with smaller Westinghouse units, our Westinghouse 6500 watt generator guide covers a lighter option.
Westinghouse 8200 Peak Watt Tri-Fuel Portable Inverter for Quiet Essential Backup
Westinghouse
Westinghouse 8200 Peak Watt Tri-Fuel Portable Inverter Generator, Remote Electric Start, Transfer Switch Ready, Gas, Propane, Natural Gas, Low THD, Safe for Electronics, Parallel Capable, CO Sensor
Price and specifications are read from the Amazon product page and can change.
Westinghouse 8200 Peak Watt Tri-Fuel Portable
Best for: Quiet backup for essential circuits
Pros
- Inverter, under 3% THD
- About 60 dBA at 25% load
- 50A home backup outlet
- Parallel capable
Cons
- 6,600 running watts on gas
- Small 3.9 gallon tank
The Westinghouse 8200 Peak Watt Tri-Fuel Portable Inverter Generator (iGen8200TFc) is the smallest here and one of two inverters. An inverter adjusts engine speed to the power you are using, which cuts fuel use and noise; Westinghouse lists about 60 dBA at 25% load, roughly the level of normal conversation. It delivers 8,200 peak and 6,600 running watts on gas, 7,380 and 5,940 on propane, and 6,560 and 5,280 on natural gas.
For home backup it has a 120/240V 14-50R 50A outlet that Westinghouse says can run an air conditioner, refrigerator and sump pump together, plus an RV ready TT-30R 30A outlet and a GFCI 5-20R duplex. THD is under 3%. A 298cc engine runs up to 17 hours at 25% load on a 3.9 gallon tank. It adds remote start, a digital display, flat-free tires, a fully enclosed design and parallel capability, meaning you can link two units for more power.
It suits smaller homes or anyone who mainly needs essentials without an open-frame roar. For whole-home loads, the 12,000 watt inverter or the open-frame models give more headroom.
Westinghouse 12000 Peak Watt Tri-Fuel Portable Inverter for Whole-Home Backup
Westinghouse
Westinghouse 12000 Peak Watt Tri-Fuel Portable Inverter Generator, Remote Start, Transfer Switch Ready, Gas/Propane/Natural Gas Powered, Low THD, Safe for Electronics, Parallel Capable, CO Sensor
Price and specifications are read from the Amazon product page and can change.
Westinghouse 12000 Peak Watt Tri-Fuel Portable
Best for: Whole-home backup with quiet running
Pros
- 9,000 running watts inverter
- As low as 64 dBA
- LED data center display
- Propane regulator kit included
Cons
- Large, heavy unit
- Two big outlets only plus duplex
The Westinghouse 12000 Peak Watt Tri-Fuel Portable Inverter Generator (iGen12000TFc) combines big output with inverter manners. It delivers 12,000 peak and 9,000 running watts on gas, 11,000 and 8,100 on propane, and 9,800 and 7,200 on natural gas, with THD at or below 3%.
Eco Mode, insulation and mufflers bring noise as low as 64 dBA. A 457cc engine runs up to 19 hours at 25% load on a 7.9 gallon tank, and Westinghouse claims inverter technology can cut fuel use in half versus traditional generators. Outlets include a 14-50R 50A, an L14-30R 30A twist lock (both transfer switch or interlock kit ready) and a GFCI 5-20R duplex. An LED data center shows fuel level, output, remaining runtime, voltage and lifetime hours. It includes a key fob, battery, charger, propane regulator kit, oil, funnel and tool kit, and it is parallel ready.
This is the pick for homeowners who want near whole-home power and quiet neighbors. For the most raw output, the 18,000 watt model steps up further.
Westinghouse 18000 Peak Watt Tri-Fuel Home Generator for Maximum Power
Best for: Big homes and jobsites
Pros
- 14,500 running watts on gas
- 713cc V-Twin engine
- Seven outlets including USB
- Low idle mode
Cons
- Loudest listed at 74 dBA
- Runtime given at 25% load only
The Westinghouse 18000 Peak Watt Tri-Fuel Home Backup Generator (WGen14500TFc) is the most powerful in this group: 18,000 peak and 14,500 running watts on gas, 16,000 and 13,000 on propane, and 14,400 and 11,600 on natural gas. It uses a 713cc V-Twin OHV engine and runs up to 16 hours at 25% load on a 10.5 gallon tank.
It has the broadest outlet panel: a 14-50R 50A and L14-30R 30A (both transfer switch and interlock kit ready), an L5-30R 30A, two GFCI 5-20R duplexes and two USB ports. It adds a low idle mode, a VFT data center for voltage, frequency and hours, push button and remote start, CO shutdown, reinforced steel handles and a lift bar. THD is under 5%, and noise is listed as low as 74 dBA.
It suits large homes and jobsites. It is also the loudest listed, so households near neighbors may prefer the 12,000 watt inverter. Shoppers weighing a permanent install instead can read our home standby generator guide.
Westinghouse 12500 Peak Watt EFI Tri-Fuel for Easy, Clean Starting
Best for: Easy starting in all 50 states
Pros
- EFI, no choke
- CARB compliant
- Remote, electric and recoil start
- 3-year limited warranty
Cons
- Smaller 6.6 gal tank
- Spec field lists gasoline only
The Westinghouse 12500 Peak Watt EFI Tri-Fuel Generator (WGen9500TFc) uses electronic fuel injection instead of a carburetor. Westinghouse says that makes starting as easy as a car, with no choke, while improving power, reducing fuel use and emissions and needing less maintenance. It is CARB compliant in all 50 states, which matters in California and other states that follow its emissions rules.
It delivers 12,500 peak and 9,500 running watts on gas, 11,200 and 8,500 on propane, and 9,500 and 7,500 on natural gas. A 457cc engine runs up to 15 hours on a 6.6 gallon tank. Outlets include a 14-50R 50A, an L14-30R 30A twist lock and two GFCI 5-20R duplexes, all covered. It starts by remote, electric or recoil and has a 3-year limited warranty. One spec field lists gasoline only, conflicting with the tri fuel title.
It suits buyers who dread pulling a choke on a cold morning. Its smaller tank means more refills than the 9.5 gallon open-frame models.
How to Choose the Right Westinghouse Tri Fuel Generator
Add up running watts for what you must power. A fridge, sump pump, lights and internet need far less than central air. Size to running watts on the fuel you plan to use, since natural gas gives the least output.
Decide between inverter and open frame. Inverters (8,200 and 12,000 models) are quieter with cleaner power; open-frame models offer more watts per unit.
Plan the connection. A transfer switch or interlock kit, installed by an electrician, is the safe way to feed home circuits. For alternatives from other makers, see our portable power equipment guide.
FAQ
What does tri fuel mean?
The generator runs on gasoline, propane or natural gas.
Why is output lower on natural gas?
Natural gas carries less energy per volume, so every listing shows lower watts on it.
What is the difference between peak and running watts?
Peak is a short burst for starting motors; running is what the generator supplies continuously.
Which Westinghouse tri fuel generator is quietest?
The 8,200 watt inverter, listed around 60 dBA at 25% load.
Can I plug these into my house?
Only through a transfer switch or interlock kit installed by a qualified electrician.
Do they include a CO sensor?
Yes, all six listings mention CO sensing or CO shutdown.
