10 Best Natural Gas Backup Generators Every Home Should Consider

Did you know nearly 50 million Americans experience power outages each year? If you’re considering a natural gas backup generator, you’re taking a smart step toward peace of mind—especially when storms or grid failures strike without warning. From portable tri-fuel models that can run on natural gas, propane, or gasoline, to reliable standby units with automatic transfer switches, there’s a solution for your home’s needs. And choosing the right one means balancing capacity, safety features, and ease of use—so let’s explore what options fit best for you.

Our Top Natural Gas Backup Generator Picks

Westinghouse 12500W Tri-Fuel Portable GeneratorWestinghouse 12500W Tri-Fuel Portable GeneratorBest Tri-Fuel FlexibilityFuel Type: Tri-fuel (gasoline, propane, natural gas)Power Output (Watts): 9,500–12,500 peakStarting Method: Remote electric or recoilVIEW LATEST PRICERead Our Analysis
Westinghouse 18000W Tri-Fuel Portable Backup GeneratorWestinghouse 18000W Tri-Fuel Portable Backup GeneratorHeavy-Duty PowerFuel Type: Tri-fuel (gasoline, propane, natural gas)Power Output (Watts): 14,500–18,000 peakStarting Method: Electric push-button or remoteVIEW LATEST PRICERead Our Analysis
Generac 12,500-Watt Tri-Fuel Portable Generator with CO SensorGenerac 12,500-Watt Tri-Fuel Portable Generator with CO SensorSafety-FocusedFuel Type: Tri-fuel (gasoline, propane, natural gas)Power Output (Watts): 9,500–12,500 peakStarting Method: Electric start with batteryVIEW LATEST PRICERead Our Analysis
Generac 22kW Home Standby Generator with Transfer SwitchGenerac 22kW Home Standby Generator with Transfer SwitchWhole-House ReadyFuel Type: Whole house (natural gas or propane)Power Output (Watts): 10,000 continuousStarting Method: Automatic start (via transfer switch)VIEW LATEST PRICERead Our Analysis
Westinghouse 28000W Tri-Fuel Portable Backup GeneratorWestinghouse 28000W Tri-Fuel Portable Backup GeneratorHigh CapacityFuel Type: Tri-fuel (gasoline, propane, natural gas)Power Output (Watts): 16,000–28,000 peakStarting Method: Remote electric with key fobVIEW LATEST PRICERead Our Analysis
Westinghouse Dual Fuel Portable Generator with Electric StartWestinghouse Dual Fuel Portable Generator with Electric StartPortable PowerFuel Type: Dual-fuel (gasoline, propane, natural gas possible)Power Output (Watts): 11,500 peak, 14,500 ratedStarting Method: Electric push-button with remoteVIEW LATEST PRICERead Our Analysis
Westinghouse Tri-Fuel Portable Generator with Remote StartWestinghouse Tri-Fuel Portable Generator with Remote StartQuiet OperationFuel Type: Tri-fuel (gasoline, propane, natural gas)Power Output (Watts): 11,500 peak, 14,500 ratedStarting Method: Electric start with remoteVIEW LATEST PRICERead Our Analysis
Westinghouse 13500W Dual Fuel Portable GeneratorWestinghouse 13500W Dual Fuel Portable GeneratorDual Fuel ConvenienceFuel Type: Dual-fuel (gasoline, propane, natural gas)Power Output (Watts): 10,500 peak, 13,500 ratedStarting Method: Remote electric startVIEW LATEST PRICERead Our Analysis
Westinghouse 13500W Tri-Fuel Portable GeneratorWestinghouse 13500W Tri-Fuel Portable GeneratorCompact PowerhouseFuel Type: Tri-fuel (gasoline, propane, natural gas)Power Output (Watts): 8,500–13,500 peakStarting Method: Electric with remote fobVIEW LATEST PRICERead Our Analysis
Generac 10kW Home Standby Generator with Transfer SwitchGenerac 10kW Home Standby Generator with Transfer SwitchBest for Emergency PreparednessFuel Type: Natural gas or propanePower Output (Watts): 10,000 (rated)Starting Method: Automatic via transfer switchVIEW LATEST PRICERead Our Analysis

More Details on Our Top Picks

  1. Westinghouse 12500W Tri-Fuel Portable Generator

    Westinghouse 12500W Tri-Fuel Portable Generator

    Best Tri-Fuel Flexibility

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    If you want a generator that can switch seamlessly between multiple fuels, the Westinghouse 12500W Tri-Fuel Portable Generator stands out. You get up to 12,500 peak watts on gasoline, 11,200 on propane, and 9,500 on natural gas. It runs on a 457cc 4-stroke engine with a cast iron sleeve, supporting up to 12 hours of power on a single tank. Plus, it’s easy to start remotely using a key fob or with traditional recoil or electric options. With safety features like automatic low oil shutdown, a built-in fuel gauge, and a durable design with wheels, it’s ready to backup your home efficiently and reliably.

    • Fuel Type:Tri-fuel (gasoline, propane, natural gas)
    • Power Output (Watts):9,500–12,500 peak
    • Starting Method:Remote electric or recoil
    • Runtime at 25% Load:Up to 12 hours
    • Safety Features:CO sensor, low oil shutdown
    • Portability Features:Heavy-duty wheels, handle, lift bracket
    • Additional Feature:Digital voltage/frequency display
    • Additional Feature:Built-in CO sensor
    • Additional Feature:Heavy-duty never-flat wheels
  2. Westinghouse 18000W Tri-Fuel Portable Backup Generator

    Westinghouse 18000W Tri-Fuel Portable Backup Generator

    Heavy-Duty Power

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    When you need heavy-duty power in a portable package, the Westinghouse 18000W Tri-Fuel Generator is a top contender. This beast delivers peak wattages of 18,000 and runs on gasoline, propane, or natural gas, giving you flexibility when fuel sources are limited. Its 713cc V-Twin engine runs up to 16 hours on a single tank. Multiple outlets, including 50A and 30A connections, make hooking up your appliances simple and safe. Features like automatic low oil shutdown, a digital display, and a CO sensor guarantee safety and easy maintenance. And with durable steel handles, wheels, and a lift bar, you’ll have no trouble hauling or positioning it.

    • Fuel Type:Tri-fuel (gasoline, propane, natural gas)
    • Power Output (Watts):14,500–18,000 peak
    • Starting Method:Electric push-button or remote
    • Runtime at 25% Load:Up to 16 hours
    • Safety Features:CO sensor, low oil shutdown
    • Portability Features:Durable wheels, handles, lift bar
    • Additional Feature:Low noise level (74 dBA)
    • Additional Feature:Reinforced steel handles
    • Additional Feature:Digital VFT data center
  3. Generac 12,500-Watt Tri-Fuel Portable Generator with CO Sensor

    Generac 12,500-Watt Tri-Fuel Portable Generator with CO Sensor

    Safety-Focused

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    This safety-focused portable generator is perfect if you want reliable power with peace of mind. With 12,500 starting watts and 9,500 running watts, it can handle your home backup needs, job sites, or RV adventures. Its tri-fuel system lets you choose gasoline, propane, or natural gas with a simple fuel selector dial—saving money and increasing flexibility. The 500cc engine and a 7.5-gallon steel tank keep runtime up to 9.5 hours at half load. Plus, with COsense technology, it constantly monitors dangerous carbon monoxide levels, shutting down automatically if needed. Heavy-duty wheels and a rugged frame make it easy to move and endure the elements.

    • Fuel Type:Tri-fuel (gasoline, propane, natural gas)
    • Power Output (Watts):9,500–12,500 peak
    • Starting Method:Electric start with battery
    • Runtime at 25% Load:Up to 9.5 hours
    • Safety Features:CO sensor, overload, low oil shutdown
    • Portability Features:Heavy-duty wheels, foldable handles
    • Additional Feature:Rugged weather-resistant outlets
    • Additional Feature:Fold-down handle for transport
    • Additional Feature:Heavy-duty steel cradle
  4. Generac 22kW Home Standby Generator with Transfer Switch

    Generac 22kW Home Standby Generator with Transfer Switch

    Whole-House Ready

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    Looking for a generator that can power your whole house automatically when outages strike? The Generac 22kW Home Standby Generator with Transfer Switch is a fantastic choice. It delivers up to 22,000 watts of clean, stable power using True Power Technology, perfect for essential appliances or the entire home. It starts automatically within seconds of a power loss and operates quietly thanks to a purpose-built G-Force engine. Connectivity? It’s Wi-Fi-enabled, so you can monitor performance remotely. Plus, its durable aluminum enclosure means it’s ready to brave the outdoors, keeping your family safe and comfortable during storms or utility failures.

    • Fuel Type:Whole house (natural gas or propane)
    • Power Output (Watts):10,000 continuous
    • Starting Method:Automatic start (via transfer switch)
    • Runtime at 25% Load:Not specified; designed for continuous operation
    • Safety Features:Automatic shutdown, safety monitoring
    • Portability Features:Built-in wheels, robust enclosure
    • Additional Feature:Wi-Fi remote monitoring
    • Additional Feature:Aluminum outdoor enclosure
    • Additional Feature:Automatic transfer switch
  5. Westinghouse 28000W Tri-Fuel Portable Backup Generator

    Westinghouse 28000W Tri-Fuel Portable Backup Generator

    High Capacity

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    If you need a high-capacity generator that can handle your biggest backup power demands, the Westinghouse 28000W Tri-Fuel Portable Backup Generator might be just what you’re looking for. With three fuel options—gasoline, propane, and natural gas—it offers flexibility for different situations. It delivers up to 28,000 peak watts on gas, enough to power your home essentials during an outage. Its heavy-duty build features a rugged engine, automatic safety shutoffs, and multiple outlets for versatile use. Weighing around 557 pounds, it’s portable thanks to large wheels and foldable handles. Whether for residential backup or outdoor needs, this generator is a powerhouse you can rely on.

    • Fuel Type:Tri-fuel (gasoline, propane, natural gas)
    • Power Output (Watts):16,000–28,000 peak
    • Starting Method:Remote electric with key fob
    • Runtime at 25% Load:About 13–15 hours
    • Safety Features:CO sensor, low oil shutdown
    • Portability Features:Heavy-duty wheels, handle, lift bracket
    • Additional Feature:Factory-tested with minimal odors
    • Additional Feature:Multiple power outlets
    • Additional Feature:Remote electric start included
  6. Westinghouse Dual Fuel Portable Generator with Electric Start

    Westinghouse Dual Fuel Portable Generator with Electric Start

    Portable Power

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    When it comes to reliable, portable power during outages, the Westinghouse Dual Fuel Portable Generator with Electric Start stands out for anyone needing flexibility and convenience. You get up to 14,500 peak watts and 11,500 running watts, enough to keep essential appliances and lights running smoothly during emergencies. Plus, it runs on gasoline, propane, or natural gas, giving you options when fuel is scarce. With a simple push of a button or remote fob, you can start it instantly. It also features sturdy wheels, a sturdy handle, and safety features like low oil shutdown and a CO sensor. Perfect for home, travel, or job sites!

    • Fuel Type:Dual-fuel (gasoline, propane, natural gas possible)
    • Power Output (Watts):11,500 peak, 14,500 rated
    • Starting Method:Electric push-button with remote
    • Runtime at 25% Load:Up to 19 hours
    • Safety Features:CO sensor, low oil shutdown
    • Portability Features:Wheels, handles, lift bracket
    • Additional Feature:9.5-gallon tank capacity
    • Additional Feature:Built-in fuel gauge
    • Additional Feature:3-year limited warranty
  7. Westinghouse Tri-Fuel Portable Generator with Remote Start

    Westinghouse Tri-Fuel Portable Generator with Remote Start

    Quiet Operation

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    The Westinghouse Tri-Fuel Portable Generator with Remote Start offers quiet operation along with impressive power, making it perfect for large homes or those who need reliable backup energy. With up to 14,500 peak watts on gasoline, it can run continuously for up to 19 hours on a 9.5-gallon tank. Its tri-fuel capability supports gasoline, propane, or natural gas, giving you flexibility during outages. The push-button electric start and remote key fob make starting easy from a distance. Portable with rugged wheels and handles, it’s designed to handle big loads, like refrigerators or air conditioners, safely and efficiently.

    • Fuel Type:Tri-fuel (gasoline, propane, natural gas)
    • Power Output (Watts):11,500 peak, 14,500 rated
    • Starting Method:Electric start with remote
    • Runtime at 25% Load:Up to 19 hours
    • Safety Features:CO sensor, overload, low oil shutdown
    • Portability Features:Heavy-duty wheels, handles, lift bracket
    • Additional Feature:Portable with heavy-duty wheels
    • Additional Feature:19-hour runtime (gas)
    • Additional Feature:Interlock-ready outlets
  8. Westinghouse 13500W Dual Fuel Portable Generator

    Westinghouse 13500W Dual Fuel Portable Generator

    Dual Fuel Convenience

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    Looking for a powerful generator that offers the flexibility of dual fuel convenience? The Westinghouse 13500W Dual Fuel Portable Generator fits the bill perfectly. You can run it on gasoline, propane, or natural gas—whatever suits your needs best. With a heavy-duty 500cc engine, it delivers up to 13,500 peak watts on gasoline and 10,500 watts continuously. Its fuel tank lasts up to 19 hours, and the remote electric start makes powering up easy. Safety features like low oil shutdown and a CO sensor protect your home. Plus, it’s built tough with steel, portable with wheels and handles, and packed with outlets ready for most major appliances.

    • Fuel Type:Dual-fuel (gasoline, propane, natural gas)
    • Power Output (Watts):10,500 peak, 13,500 rated
    • Starting Method:Remote electric start
    • Runtime at 25% Load:Up to 19 hours
    • Safety Features:CO sensor, low oil shutdown
    • Portability Features:Heavy-duty wheels, handle, lift bracket
    • Additional Feature:Digital display panel
    • Additional Feature:EPA compliant model
    • Additional Feature:Recoil backup start
  9. Westinghouse 13500W Tri-Fuel Portable Generator

    Westinghouse 13500W Tri-Fuel Portable Generator

    Compact Powerhouse

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    If you’re after a compact powerhouse that flexes fuel options, the Westinghouse 13500W Tri-Fuel Portable Generator is a top pick. This versatile generator can run on gasoline, propane, or natural gas, giving you flexibility in any situation. With peak wattages up to 13,500 on gasoline and slightly less on other fuels, it easily powers critical appliances like refrigerators, air conditioners, and sump pumps. Its durable 500cc engine offers up to 19 hours of runtime on a 9.5-gallon tank. Plus, remote electric start, multiple outlets, and automatic voltage regulation make it user-friendly and reliable—ready for whatever power needs come your way!

    • Fuel Type:Tri-fuel (gasoline, propane, natural gas)
    • Power Output (Watts):8,500–13,500 peak
    • Starting Method:Electric with remote fob
    • Runtime at 25% Load:Up to 19 hours
    • Safety Features:CO sensor, low oil shutdown
    • Portability Features:Wheels, handles, lift bracket
    • Additional Feature:Factory-finished with residual odor
    • Additional Feature:Comes with control components
    • Additional Feature:Minimal residual oil/fuel odor
  10. Generac 10kW Home Standby Generator with Transfer Switch

    Generac 10kW Home Standby Generator with Transfer Switch

    Best for Emergency Preparedness

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    When it comes to emergency preparedness, the Generac 10kW Home Standby Generator with Transfer Switch is a solid choice for keeping your home powered during outages. Imagine never worrying about power loss again—this generator kicks in automatically within seconds of an outage, seamlessly supporting your home’s essential circuits. It runs on natural gas or liquid propane, easily connected to your existing fuel supplies. With WiFi-enabled remote monitoring, you can check status updates and maintenance alerts from anywhere. Designed with durability in mind, it’s weather-resistant with an aluminum enclosure, ensuring reliable performance even in harsh outdoor conditions. It’s an investment that offers peace of mind, no matter what the weather throws at you.

    • Fuel Type:Natural gas or propane
    • Power Output (Watts):10,000 (rated)
    • Starting Method:Automatic via transfer switch
    • Runtime at 25% Load:Not specified; intended for whole house backup
    • Safety Features:Automatic shutdown, overload protection
    • Portability Features:Rails, weather-resistant enclosure
    • Additional Feature:5-year warranty
    • Additional Feature:Portable with removable panels
    • Additional Feature:Quiet generator operation

Factors to Consider When Choosing a Backup Generator for Home Natural Gas

When choosing a backup generator for your home, you need to think about how much power you’ll require during an outage—big enough to keep the essentials running but not so large it wastes fuel. You’ll also want to check if the generator’s fuel features match your setup and how easy it is to install, maintain, and keep supported. And don’t forget safety—make sure it includes the right safety features to protect your home and loved ones.

Power Capacity Needs

Ever wonder how much power your home truly needs during an outage? It’s not just about keeping the lights on; you want your essential appliances to keep running smoothly. First, total up the wattage of items like your fridge, furnace, lights, and maybe your sump pump. Natural gas generators often range from 10kW to over 20kW, suited for whole-home backup depending on your needs. Pay attention to peak and running wattage ratings to avoid overloads—your refrigerator motor, for example, requires a surge of power when starting. And don’t forget about future needs—maybe you plan to add an appliance later. Matching your generator’s capacity to both current and future demands keeps your home running reliably during any outage.

Fuel Compatibility Features

Have you ever wondered if your backup generator can handle more than just natural gas? Many models are designed with fuel flexibility in mind. They connect directly to your home’s natural gas line, so refueling isn’t a concern — no tanks, no fuss. But some also run on propane or gasoline, giving you options in case of fuel shortages or if your natural gas supply gets interrupted. This versatility means you can switch fuels to keep your power running smoothly. Plus, these generators often include safety features like automatic shutoff if there’s a gas leak or pressure problem, ensuring safe operation. Key compatibility features to look for are multi-fuel capability, safety systems, and long runtime — sometimes up to 19 hours on a single tank.

Installation Requirements

Getting a backup generator set up isn’t as simple as plugging it in and hoping for the best. You need to evaluate compatibility with your home’s natural gas supply, which often requires a professional assessment of your gas line capacity. Installation involves connecting the generator to your gas inlet through a dedicated fuel line, which usually needs permits and inspections for safety. Proper ventilation is essential—an exhaust buildup can be dangerous. You also want enough clearance space around the unit to allow for safe operation and maintenance. An automatic transfer switch is highly recommended for seamless switching between utility and generator power, but it can add to installation complexity. Position the generator on a stable, level surface and in an accessible spot for future maintenance.

Maintenance and Support

When choosing a natural gas backup generator, maintenance and support should be high on your list. You want a unit that’s reliable and easy to care for, especially during power outages. Confirm the manufacturer offers a solid warranty, ideally at least 3 to 5 years, to cover repairs and parts replacements. Look for generators with a nationwide or local service network, so help isn’t a call away. Features like digital hour meters and maintenance alerts are great—they keep you on top of service needs. Automatic low-oil shutdown helps protect your engine, reducing long-term maintenance. And don’t forget, easy access to filters and spark plugs makes inspections and replacements simpler. These factors make maintaining your generator straightforward, ensuring it’s ready when you need it most!

Safety Features Included

Safety features are one of the most important aspects to take into account when selecting a natural gas backup generator. These features help keep you and your home protected from potential hazards. For example, automatic low oil shutdown screws up the engine if oil levels dip too low, preventing damage—saving you money on repairs. Carbon monoxide (CO) sensors are a must-have, constantly monitoring hazardous gases and shutting down the generator if dangerous levels are detected, because CO poisoning isn’t a risk worth taking. Overload protection ensures the generator doesn’t push beyond safe electrical limits, reducing fire risks. Rubber covers on outlets keep dirt, moisture, and accidental shocks away, giving peace of mind. And always verify that the unit meets EPA and safety standards—because safety isn’t optional, even during a power outage!

Budget and Warranty

Budget is a key factor when choosing a home backup generator, but it’s equally important to balance that budget with the generator’s size, power output, and features. You want enough capacity to power your essentials without overspending on unnecessary extras. Generally, higher-priced models come with extended warranties, built-in safety features, and better materials, which promise more reliability and longer life. When shopping, consider not just the upfront cost but also installation and maintenance expenses, as some units can incur higher ongoing costs. Look for warranties that cover parts, labor, and service—some manufacturers offer nationwide support, making repair visits simpler. A longer warranty (like 3 to 8 years) usually signals confidence from the maker and better protection for your investment.

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