Power outages are stressful at the worst moments: a freezer full of food in August, a sump pump running during a storm, a heat pump working overtime through a winter cold snap. Home natural gas generators keep the lights on without the fuel-storage headaches that gasoline brings. This list breaks down ten portable and inverter models that run on gasoline, propane, or natural gas, sized for everything from weekend outages to whole-home backup plans.
Your Options, Compared
Westinghouse 14500 Peak Watt Tri-Fuel Home Backup Portable Generator
Westinghouse 13500 Peak Watt Tri-Fuel Home Backup Portable Generator
Westinghouse 12500 Peak Watt Tri-Fuel Home Backup Portable Generator
EU2000i Tri-Fuel Conversion Kit for Honda Inverter Generator
Generac 3,300 Watt Gas Powered Portable Inverter Generator
Generac 12,500 Starting Watt Tri-Fuel Portable Generator
Honda EB2200i 2200 Watt Super Quiet Inverter Generator
Honda EB5000 5000 Watt 120/240V Quiet Generator
Westinghouse 12000 Peak Watt Tri-Fuel Portable Inverter Generator
Generac 2,500 Watt Gas Powered Portable Inverter Generator
Why These Options Stand Out
Whole-home backup is what this Westinghouse is built for. The 14500 Peak Watt Tri-Fuel Home Backup Portable Generator draws on a 550cc OHV engine with a cast iron sleeve, paired with a 9.5 gallon tank that supports roughly 19 hours of gasoline runtime. Tri-fuel flexibility means you can switch to propane or natural gas, which matters during fuel shortages after big storms.
For most suburban properties running a furnace, fridge, well pump, and some lights at once, 11,500 running watts leaves comfortable headroom. Remote electric start and transfer switch readiness keep the morning routine simple when the power drops at 3 a.m.
What It Does Well
- Tri-fuel versatility means you keep options open when gasoline supplies tighten
- Remote electric start reduces fumbling in the dark
- Transfer switch ready for safer whole-home wiring
- Cast iron sleeve on the engine supports long-term durability
- 9.5 gallon tank stretches runtime into a full day and night
Things To Consider
- Heavy footprint, so plan on a wheeled pad or a helping hand
- Open-frame design runs louder than inverter alternatives
- Natural gas output is lower than gasoline, so size loads accordingly
Feature Snapshot
Best Suited To
Homeowners in storm-prone regions who need whole-home backup and want the option to plumb into a natural gas line.
Consider Something Else When
The Westinghouse 13500 Peak Watt Tri-Fuel Home Backup Portable Generator fits better when 11,500 watts is overkill and you want a slightly smaller footprint.
The Westinghouse 13500 Peak Watt Tri-Fuel Home Backup Portable Generator sits a step below the larger WGen11500TFc but shares the same tri-fuel platform and cast iron sleeve construction. A 500cc OHV engine paired with a 9.5 gallon tank delivers roughly 19 hours of gasoline runtime, which is generous for multi-day outages.
10,500 running watts covers most mid-size homes running essentials like a fridge, gas furnace blower, internet gear, and a few lights. For most homeowners who do not want to run central air, that is plenty.
The Helpful Details
- Tri-fuel design adapts as fuel availability shifts
- Transfer switch ready for clean electrical hookup
- Remote electric start simplifies cold-weather starts
- Long runtime from the 9.5 gallon tank
Worth Noting
- Open-frame sound level is significant, so placement matters
- Heavier than inverter picks, plan storage in advance
- Natural gas output drops versus gasoline, common with tri-fuel platforms
Quick Facts
Right Fit For
Mid-size households looking for whole-essentials backup without stepping into the heavier 14,500-watt class.
Skip It When
The Generac 3,300 Watt Gas Powered Portable Inverter Generator is a smarter pick for owners prioritizing portability and quiet operation over raw wattage.
The Westinghouse 12500 Peak Watt Tri-Fuel Home Backup Portable Generator uses a 457cc OHV engine and a 6.6 gallon tank for roughly 12 hours of runtime. Compared to the 14500-watt sibling above, it trims weight and capacity while keeping the same tri-fuel flexibility that makes Westinghouse popular for suburban backup.
9,500 running watts handles refrigerators, internet routers, a gas furnace blower, and lighting without breaking a sweat. You may find the reduced weight makes it easier to position near a gas line hookup.
Useful Touches
- Tri-fuel platform gives fuel flexibility during shortages
- Remote electric start avoids manual pull-starting
- Smaller tank and engine than the larger Westinghouse models
- Transfer switch ready for code-compliant installations
Honest Caveats
- Shorter runtime means refueling breaks during long outages
- Open-frame noise is louder than inverter picks
- Not ideal for central air conditioning on natural gas
Whose Shelf It Belongs On
Suburban homeowners who want tri-fuel flexibility without the bulk and cost of the largest Westinghouse models.
Reach For A Different Pick When
The Westinghouse 12000 Peak Watt Tri-Fuel Portable Inverter Generator is a better fit when you need quiet operation and clean power for electronics.
This is not a generator, it is a Grenergy kit that adds propane and natural gas capability to a Honda EU2000i inverter you already own. The kit is preset to run on propane straight out of the box, and it bolts onto the existing carburetor without permanent modifications. For Honda EU2000i owners, this turns a portable inverter into a flexible backup tool.
Switching fuels between gasoline, propane, and natural gas gives owners long-term fuel resilience. Propane stores indefinitely, and natural gas plumbs straight from your utility line for near-endless runtime.
Where It Excels
- Bolts on without permanent carburetor changes
- Presets to propane for a quick first start
- Adds long-runtime natural gas capability
- Lets existing Honda owners keep their trusted inverter
Points To Keep In Mind
- Only fits Honda EU2000i models, not other generators
- Installation may require basic mechanical comfort
- Output drops slightly on natural gas compared to gasoline
Core Details
Made For
Honda EU2000i owners who want to extend their inverter with propane and natural gas capability without buying a new generator.
Look Elsewhere When
The Generac 3,300 Watt Gas Powered Portable Inverter Generator makes more sense for shoppers who need a complete unit rather than a conversion kit.
The Generac GP3300i delivers 2,500 running watts and 3,300 starting watts in a 59.5-pound inverter package built for camping, RV trips, and light home backup. Unlike the larger tri-fuel open-frame units reviewed earlier, this one runs on gasoline and produces clean inverter power safe for laptops and phones.
A standard refrigerator draws roughly 700 watts running and up to 2,200 watts at startup, which this unit handles with room for a few extras. USB charging ports add convenience for outdoor use.
The Upside
- Inverter output is safe for sensitive electronics
- 59.5-pound build is genuinely portable
- USB ports cut down on bulky adapters
- Parallel capable for doubled output with a second unit
Trade Offs
- Gasoline only, no natural gas or propane option
- Not enough wattage for whole-home backup
- Shorter runtime than larger fuel tanks on open-frame models
Feature Card
Who Should Grab It
RVers, tailgaters, and homeowners wanting a portable secondary unit for short power blips rather than full backup.
Swap It Out When
The Honda EB2200i 2200 Watt Super Quiet Inverter Generator fits better when noise level matters more than peak wattage.
The Generac GP9500E Tri-Fuel generator delivers 12,500 starting watts and runs on gasoline, propane, or natural gas. For homeowners who want Generac build quality in a portable tri-fuel format, this model bridges the gap between compact inverters and stationary whole-home units.
Electric start and a beefy engine make cold-weather startups straightforward. Owners commonly report using natural gas line hookups during extended outages, where the fuel supply effectively becomes unlimited.
What Pays Off
- Tri-fuel flexibility for fuel availability swings
- Electric start removes manual pull-cord hassle
- Generac’s brand recognition in residential backup power
- Strong output for 240V appliances like well pumps
Room For Improvement
- Open-frame design runs loud compared to inverters
- Heavy and bulky, requires planned placement
- Not parallel capable like inverter alternatives
Perfect Match For
Homeowners with 240V appliances such as well pumps or electric dryers, plus contractors needing tri-fuel job-site power.
Not Your Match When
The Westinghouse 12000 Peak Watt Tri-Fuel Portable Inverter Generator is a smarter choice when quiet inverter output matters for your neighborhood.
The Honda EB2200i operates between 48 and 57 dB(A), quieter than a normal conversation, which makes it a standout for noise-restricted neighborhoods and campsites. Inverter technology produces stable power safe for laptops, phones, and modern TVs. It runs on gasoline only, so it does not deliver the natural gas flexibility of larger tri-fuel picks above.
For camping, food-truck setups, and quiet residential backup, this Honda shines. You may find the 2200-watt ceiling limiting during fridge compressor startup on hot days.
Reasons It Performs
- Whisper-quiet operation suitable for campgrounds
- Inverter output safe for sensitive electronics
- Honda engine reputation for reliability
- Portable form factor for one-person handling
Factors To Consider
- Gasoline only, no natural gas hookup
- 2200 watts limits whole-home backup use
- Smaller fuel tank means more frequent refueling
Who It Suits Best
Campers, remote workers, and homeowners in noise-sensitive areas who need clean inverter power in a portable package.
A Better Fit Elsewhere
The EU2000i Tri-Fuel Conversion Kit for Honda Inverter Generator is worth considering if you already own a compatible Honda and want natural gas flexibility.
The Honda EB5000 delivers 5000 running watts with 120/240V output for contractors and homeowners running well pumps or larger equipment. iAVR (Intelligent Automatic Voltage Regulation) keeps voltage stable under varying loads, a real-world benefit when motor-driven tools cycle on and off.
Sound levels of 63-65 dB(A) make it quieter than most open-frame generators in this wattage class. It runs on gasoline only, but the build quality and Honda engine reputation justify consideration for serious users.
Advantages To Know
- 120/240V output supports well pumps and dryers
- iAVR technology maintains steady voltage under load
- Quieter than typical open-frame 5000W units
- Honda’s commercial-grade engine durability
Some Limits To Know
- Gasoline only, no natural gas option
- Heavier than portable inverter units
- Higher price than comparable open-frame competitors
Technical Highlights
Built With In Mind
Contractors, farmers, and homeowners with well pumps or larger 240V appliances who value Honda durability.
Another Choice May Suit
The Generac 12,500 Starting Watt Tri-Fuel Portable Generator is a better fit when natural gas hookup and higher wattage are priorities.
The Westinghouse iGen12000TFc combines inverter quietness with tri-fuel capability and 12,000 peak watts, a rare blend. Less than 3% THD (total harmonic distortion) means clean power for laptops, TVs, and modern appliances that dislike dirty electricity. Remote start and transfer switch readiness make it practical for whole-home backup.
Sound levels as low as 64 dBA in Eco Mode are impressive for a 12,000-watt unit. This is the pick for owners who want both quiet inverter output and natural gas flexibility.
Positive Points
- Low THD safe for sensitive electronics
- Tri-fuel platform adds natural gas flexibility
- Eco Mode reduces noise and fuel use
- Remote start avoids outdoor trips in storms
Where It May Fall Short
- Premium positioning means higher cost
- Heavier than smaller inverter picks
- Natural gas output still drops versus gasoline
At A Glance
Who Will Love This
Homeowners with electronics-heavy households who want quiet tri-fuel operation in a single unit.
Where A Sibling Pick Shines
The Westinghouse 14500 Peak Watt Tri-Fuel Home Backup Portable Generator is worth considering when maximum wattage matters more than inverter quietness.
The Generac GP2500i delivers 2,200 running watts and 2,500 starting watts in a compact 46.6-pound inverter. It handles a refrigerator’s roughly 700-watt running draw with up to 2,000 watts of startup surge, plus a few lights or a phone charger.
For campers and homeowners who need a small, lightweight backup, this Generac fits in a trunk and starts with a pull cord. It runs on gasoline only, so it does not match the natural gas flexibility of larger picks above.
The Good Stuff
- 46.6-pound build is genuinely portable
- Inverter output safe for laptops and phones
- Compact footprint for small storage spaces
- Handles a fridge plus a few small loads
Details To Watch
- Gasoline only, no natural gas option
- Not enough wattage for central AC or well pumps
- Shorter runtime on the small fuel tank
Best Suited To
Campers, apartment dwellers with small backup needs, and homeowners who want an easy-to-store secondary generator.
Consider Something Else When
The Generac 3,300 Watt Gas Powered Portable Inverter Generator fits better when you want a bit more headroom for motor startup surges.
Picking The Right Size For Your Home
Whole-home backup demands a clear wattage estimate before you browse. Walk through your home and add up the running watts of essentials: refrigerator, furnace blower, well pump, internet gear, and a few lights. Then add the highest motor-startup surge among those loads, which is often the fridge or sump pump. That total sets your minimum running wattage target.
Fuel choice shapes long-term ownership. Gasoline is convenient but degrades over months and may run short during regional emergencies. Propane stores indefinitely in tanks and burns clean, but you need spare tanks or a large standby supply. Natural gas plumbs directly from your utility line for near-unlimited runtime, though professional installation is required and output drops slightly compared to gasoline on tri-fuel platforms.
Noise and placement matter more than most shoppers expect. Open-frame generators run loud, often 70-80 dB(A), which can violate local ordinances and strain neighborly relations. Inverter models cut noise to 50-65 dB(A) and produce cleaner power safe for electronics. Placement at least 20 feet from the house and away from windows keeps exhaust fumes out of living spaces.
Transfer switches protect both your home and utility workers. A transfer switch isolates your generator from the grid during outages, preventing dangerous backfeed. Models marked transfer switch ready on this list support straightforward installation by a licensed electrician.
Build quality varies across the price range. Cast iron engine sleeves (found on the Westinghouse tri-fuel units) support long service life. Honda engines carry a strong reputation for reliability, though at higher cost. Parallel capability on inverter units lets you double output by linking two generators, a useful path if you start small and expand later.
Key Considerations Across These Picks
Wrong Turns To Avoid
Underestimating motor startup loads is the most common mistake. A refrigerator drawing 700 watts running may need 2,000+ watts for a brief startup surge, and central air conditioning can spike above 5,000 watts. Buyers who size purely to running watts end up with generators that trip when a compressor kicks on. Always check the starting watts spec.
Another trap is choosing gasoline-only units when natural gas is available. If your home already has a natural gas line, a tri-fuel model lets you plumb the generator in for multi-day runtime without refueling. Owners commonly report this is the single biggest convenience upgrade for frequent outage areas.
When Paying More Pays Off
Higher-tier tri-fuel and inverter models cost more upfront but deliver measurable ownership benefits. Cast iron engine sleeves, remote electric start, and low-THD inverter output are not luxury extras; they directly affect how long the unit lasts and how well it handles modern electronics. For homeowners in regions with frequent or long outages, the upgrade typically pays for itself in convenience, fuel flexibility, and reduced repair frequency over the generator’s lifespan.
Frequently Asked Questions
What size home natural gas generator do I need for a 2,000 square foot home?
Most 2,000 square foot homes running essentials like a fridge, gas furnace blower, internet, and lights need 7,000-10,000 running watts. Add central air conditioning and a well pump, and that climbs toward 12,000-15,000 running watts. Tri-fuel models in the 12,000-14,500 peak watt range cover most situations.
Can a portable generator run on a home natural gas line?
Yes, tri-fuel portable generators can connect to a home natural gas line through a proper gas hose and regulator. This requires professional installation by a licensed plumber or gas technician to meet local codes. Natural gas output is typically 10-15% lower than gasoline output on the same unit.
How long can a tri-fuel generator run on natural gas?
Natural gas plumbs directly from your utility line, so runtime is effectively unlimited as long as the gas service stays on. During major regional outages, natural gas infrastructure often remains operational even when electrical grids fail, which is why many homeowners prefer tri-fuel setups.
Are inverter generators better for sensitive electronics?
Yes, inverter generators produce low total harmonic distortion (THD), typically under 3%, which matches or approaches utility power quality. Open-frame generators can produce higher THD, which may cause issues with laptops, modern TVs, and other sensitive electronics over time.
Do home natural gas generators need professional installation?
Units rated 5,000 watts and above, especially when connected through a transfer switch or natural gas line, typically require professional installation by a licensed electrician and gas technician. Smaller portable inverter units (2,000-3,300 watts) can be used with standard outdoor extension cords without special installation.
The Takeaway
Picking from this list depends on your home’s wattage needs, your fuel priorities, and how much noise you can tolerate. Tri-fuel units from Westinghouse and Generac deliver the most flexibility for whole-home backup, while Honda and smaller Generac inverters win on portability and quiet operation. Match the generator to your realistic load, not the worst-case fantasy, and you will end up with a tool that actually helps when the grid goes quiet.
