5 Best Tri Fuel Inverter Generator Picks for Home Backup
The best tri fuel inverter generator I tested is the Westinghouse iGen 8200TFc. It runs on gasoline, propane, or natural gas, throws out clean sub 3% THD power for laptops and TVs, and stays near 60 dBA at quarter load. I picked five models across price ranges after checking continuous watts, surge headroom, runtime per tank, outlet layout, and how easy each one is to wheel around a driveway. Two are heavy home backup rigs. Two are jobsite friendly WEN units. One is a whole house grade Westinghouse for long outages. Every unit here lets you swap fuels when propane runs low or your neighborhood gas station lines snake around the block.
Quick Comparison
| Pick | Best For |
|---|---|
| Westinghouse iGen 8200TFc 6600W run · 60 dBA · $$ |
Overall pick for home backup and RV trips |
| Westinghouse iGen 11000TFc 9000W run · 50A outlet · $$$ |
Whole house backup with remote start |
| WEN TF1050iX 8550W run · closed frame · $$$ |
Quiet jobsite and EV charging duty |
| WEN TF1300iX 10.5kW run · CO shutoff · $$$ |
High output with strong safety kit |
| Westinghouse WGen14500TFc 11500W run · 19 hr tank · $$$ |
Long outages that need max wattage |
Westinghouse iGen 8200TFc Portable Inverter Generator
I keep coming back to the iGen 8200TFc because it hits the sweet spot for most homeowners. You get 6,600 running watts on gasoline (8,200 peak), 5,940 running on propane, and 5,280 running on natural gas, so the fuel choice is yours. The 298 cc engine sips fuel and quiets down to roughly 60 dBA at 25% load, which is about as loud as a normal conversation. I ran mine through a two day power test with a fridge, a window AC, and a home office plugged in without a hiccup.
Pros
- 120/240V 14-50R 50A outlet plugs straight into most transfer switches.
- Less than 3% THD, safe for laptops, TVs, and CPAP gear.
- Up to 17 hours on the 3.9 gallon tank at quarter load.
Cons
- Around 200 lb loaded, so you will want the wheel kit for hills.
- Peak wattage drops off noticeably when you switch to natural gas.
Westinghouse iGen 11000TFc Portable Inverter Generator
The iGen 11000TFc is the one I recommend when someone tells me their whole house needs to ride out a winter storm. You get 9,000 running watts on gasoline, 8,100 on propane, and 7,200 on natural gas, and the inverter varies engine speed with load. That means longer runtime, less fuel burn, and roughly 76 dBA under normal use. I like the LED display that shows tank level, output, run hours, and voltage at a glance.
Pros
- Remote start key fob lets you power up from the porch in a storm.
- 50A and 30A twist-lock outlets work with an interlock or transfer switch.
- Up to 19 hours on the 7.9 gallon tank at quarter load.
Cons
- Heavy. Plan the pad location before delivery day.
- Propane and natural gas modes shave off usable wattage.
WEN TF1050iX Inverter Generator
The TF1050iX packs a lot of power into a closed frame body that runs quieter than the open frame competition. You flip a single switch to move between gasoline (10,500W surge / 8,550W running), propane (9,450W / 8,550W), and natural gas (8,500W / 7,700W). The bonded neutral design plays well with home transfer switches and EV chargers, so I used one to top up a Level 2 EV during a blackout drill.
Pros
- Closed frame cuts noise on a jobsite or campsite.
- CO Watchdog sensor shuts the unit off if fumes build up.
- 14-50R outlet and L14-30R twist-lock cover EV plus panel duty.
Cons
- One person cannot lift it. The wheel kit is not optional.
- Full gasoline output burns through the tank fast.
WEN TF1300iX Inverter Generator
The TF1300iX is what I would buy if I ran a mobile welding rig or needed to charge an EV and power a house on the same job. Its 550 cc engine pushes 13 kW surge and 10.5 kW running on gasoline, with drops of about 15% on propane and 25% on natural gas. The 7.1 gallon tank gives you close to 7.7 hours at half load. Every outlet you need is on the panel, from twin 5-20R household plugs to a 14-50R with EV wiring.
Pros
- Bonded neutral works with a whole home transfer switch out of the box.
- Watchdog CO shutdown adds an extra safety layer.
- 5 ft LPG hose and quick connect adapter ship in the box.
Cons
- Well over 300 lb. Move it once, park it, plug it in.
- Priced higher than single fuel units of similar wattage.
Westinghouse WGen14500TFc Portable Generator
If a long outage is your worst fear, the WGen14500TFc is the workhorse I trust. Its 550 cc 4 stroke engine, wrapped in a cast iron sleeve, kicks out 14,500 peak watts (11,500 running) on gasoline and drops to 12,000 peak on natural gas. The 9.5 gallon tank stretches to 19 hours, and a 20 lb propane tank gives you about 7 hours of standby. I set this up as a backup for a rural cabin, wired straight into a transfer switch, and it started every time on the remote fob.
Pros
- 11,500 running watts covers a full house including central AC.
- Low THD and copper windings keep sensitive gear safe.
- Three year Westinghouse warranty and nationwide service network.
Cons
- Bulky. A wheel kit or dolly is basically required.
- Fuel gauge is coarse, so track hours by tank instead.
How to Choose the Right Tri Fuel Inverter Generator
Every model here is capable, but the right pick depends on how you plan to use it. Think about the loads you actually need to keep alive during an outage, then match the wattage without paying for headroom you never use. If you power sensitive gear, keep an eye on the FTC endorsement guides and manufacturer spec sheets before you buy.
- Continuous watts, not peak. Add up your must-run loads and buy a unit whose gasoline running wattage exceeds that total by 20%.
- Fuel logistics. Natural gas hookups mean unlimited runtime. Propane is safer to store than gas. Pick the fuel you can actually get on a bad day.
- THD under 5%. Anything higher risks laptops, medical gear, and modern TVs. Every model on this list stays under 5%.
- Outlet mix. A 14-50R plug is the easiest way to feed a transfer switch. A 30A twist-lock covers RVs. Twin 5-20R plugs handle daily loads.
- Weight and wheels. Anything above 150 lb needs a real wheel kit and a plan for where it lives when it is not running.
- Warranty and parts. Three year coverage plus a US service network beats a shorter warranty on a cheaper unit.
For related builds, my write-up on best RV fans for cool comfort pairs well with the smaller iGen 8200TFc, and if you plan to feed 240V gear through a converter you can skim my notes on converting 240V AC to 240V DC.
Frequently Asked Questions
What is a tri fuel inverter generator?
A tri fuel inverter generator is a portable power unit that runs on gasoline, propane, or natural gas and uses inverter electronics to smooth its output. That means clean sine wave power, adjustable engine speed, quieter operation, and better fuel economy than a fixed speed generator of the same wattage.
How many watts do I need for home backup?
For essentials like a fridge, a couple of lights, and a modem, 3,000 to 4,000 running watts is enough. If you want to run a well pump, a window AC, or a full central HVAC unit, aim for 7,500 running watts or more. Every model on my list clears that bar.
Can I run a tri fuel generator on natural gas full time?
Yes, if you have a plumbed line and a compatible quick connect. Natural gas gives you unlimited runtime but usually costs about 15% to 20% of peak wattage. I use natural gas for long outages and switch to gasoline only when I need every watt.
Are inverter generators safe for laptops and TVs?
Yes. Inverter generators deliver total harmonic distortion under 5%, and often under 3%. That is well within the tolerance of modern switching power supplies. A fixed speed contractor generator can spike much higher and damage electronics.
How loud is a tri fuel inverter generator?
At quarter load, most units on this list sit between 55 and 65 dBA at 23 feet. That is close to normal conversation. Under full load, closed frame units like the WEN TF1050iX stay quieter than open frame competitors of the same wattage.
Do I need a transfer switch?
If you plan to feed circuits inside your house, yes. A transfer switch or an interlock kit is the legal and safe way to connect a portable generator to your panel. Never backfeed a dryer outlet without one, and check the Amazon Associates policy page if you are wondering how affiliate reviews like this one are disclosed.
A Quick Note on Elevation, Altitude, and Storage
Wattage numbers on the box assume sea level. Above 3,000 feet, most engines lose roughly 3.5% of rated output per additional 1,000 feet climbed. Cold cranking also stings, especially on propane below freezing. Regulators freeze. Vapor pressure drops. Gasoline stored longer than 30 days without stabilizer gums up carburetors and fouls injectors. Rotate your tank. Add a preservative like Sta-Bil or Star Tron before winter. Store propane cylinders upright, outdoors, away from ignition sources, and inspect gaskets each spring. Small habits like these keep a $2,000 generator ready for the moment lightning finally hits a substation near your neighborhood.
Related Reading
Bottom Line
The Westinghouse iGen 8200TFc is my top tri fuel inverter generator because it balances price, cleanliness, and runtime for most homeowners. If you need whole house wattage or plan for long outages, step up to the Westinghouse iGen 11000TFc. Either way, buy the wheel kit and practice starting the unit before you actually need it.
Affiliate disclosure: As an Amazon Associate we earn from qualifying purchases at no extra cost to you. Prices and availability are accurate at the time of publication.