Are you seeking a reliable backup power source? Our guide to the Best Natural Gas Portable Generators offers the top 12 models for home backup, focusing on power, efficiency, and safety.
The need for reliable backup power has never been more critical, whether you’re dealing with unexpected outages or working at remote job sites. Unlike gasoline-only models, generators that run on natural gas offer the immense benefit of connecting directly to your home’s gas line, eliminating the need for frequent refueling and ensuring a virtually unlimited run time. This seamless supply makes them a superior choice for long-term home security. Moreover, natural gas typically burns cleaner than gasoline or propane, contributing to less engine wear and a longer lifespan for your unit.
Ultimately, choosing the right generator comes down to matching its output and features to your specific needs. Do you need to power an entire home, or just critical appliances? Are you looking for a tri-fuel model that also accepts propane and gasoline for maximum versatility? In addition, modern generators often include essential features like remote start, CO sensors, and low Total Harmonic Distortion (THD) for safely powering sensitive electronics. To help you navigate the options and make an informed decision, we’ve put together a comprehensive review of the top portable generators on the market. Let’s dive into the detailed reviews of the Best Natural Gas Portable Generators.
Top 5 Best Natural Gas Portable Generators
12 Best Natural Gas Portable Generators Review
1. Westinghouse 12500 Peak Watt Tri-Fuel Home Backup Portable Generator
The Westinghouse 12500 Peak Watt Tri-Fuel generator is a powerhouse designed for serious home backup. This heavy-duty model is perfect for homeowners needing to run essential appliances, like well pumps and HVAC systems, along with lights and electronics during a major outage. Its standout feature is its Tri-Fuel capability, allowing it to run on gasoline, propane, or natural gas, providing maximum fuel flexibility. It’s a reliable choice for anyone prioritizing raw power and versatility in a portable unit.
In terms of performance, the unit boasts 9500 running watts on gasoline, dropping to 7500 watts on natural gas. This power output is managed by a robust 457cc 4-stroke OHV engine. A key practical feature is the Remote Start key fob, which offers convenient operation from a distance. Moreover, it is Transfer Switch Ready (L14-30R and 14-50R outlets), simplifying the connection to a home’s electrical system. The unit is somewhat heavy, making it less ideal for frequent transport, but the included wheel kit helps manage its 217.3-pound weight.
Verdict: This is an excellent choice for a whole-home backup solution that offers the ultimate freedom of fuel choice. Buyers seeking flexibility and substantial power, especially those ready to install a natural gas quick-connect, will find this among the top Best Natural Gas Portable Generators. The built-in CO Sensor and Automatic Voltage Regulation add crucial safety and protection for your electronics.
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2. DuroMax XP13000HXT 13,000-Watt Tri Fuel Portable Generator
The DuroMax XP13000HXT is an extremely powerful Tri-Fuel generator, capable of handling large residential or commercial power needs. Its 13,000 peak watts on gasoline provide a massive starting capacity, while its ability to run on gasoline, propane, or natural gas offers the operator the ultimate flexibility in a crisis. The front-facing interface for quick fuel type changes is a major usability advantage, making this a top choice for those who might switch between fuel sources regularly.
Powering this beast is a robust 500cc OHV engine, designed for high output and durability. The generator is equipped with a push-button and a Remote Start feature, enhancing user convenience. A notable safety addition is the CO Alert system, which automatically shuts down the generator if dangerous carbon monoxide levels are detected. While the unit provides excellent power delivery, the large frame and 240-pound weight require a sturdy placement and can be cumbersome to move, even with the included wheel kit. Furthermore, it includes a transfer switch-ready 50-amp outlet.
Verdict: The DuroMax XP13000HXT is a top contender for the Best Natural Gas Portable Generators for users who need maximum peak wattage and demand true fuel versatility. Its strong engine and thoughtful features make it a reliable, high-performance option, especially for users who want a unit ready for their existing natural gas supply. It’s a great example of a robust tri-fuel generator.
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3. WEN 14,500-Watt Tri-Fuel Generator (TF1450X)
The WEN TF1450X is built for massive power output, topping our list with 14,500 surge watts on gasoline, making it an ideal generator for powering nearly any home. Its Tri-Fuel capability is simple to use, featuring a selection dial that allows you to effortlessly switch between gasoline, propane, and natural gas. With 8750 running watts on natural gas, this unit provides more than enough power to keep critical circuits running during extended outages. It is truly designed as a reliable emergency power solution for the modern homeowner.
Performance-wise, the generator utilizes a robust 500cc 4-stroke OHV engine and an extra-large 8.2-gallon tank, which offers an impressive run time of up to 12 hours at half load on gasoline. The inclusion of the WEN Watchdog CO Shutdown Sensor prioritizes user safety, automatically shutting down the unit if carbon monoxide levels become unsafe. Furthermore, the generator is perfectly equipped for home integration with both a NEMA L14-30R and a NEMA 14-50R transfer-switch-ready outlet, providing maximum installation flexibility. Keep in mind, however, that its open-frame design means it will be louder than comparable inverter models.
Verdict: For buyers who need the absolute highest starting wattage in a portable unit and plan to rely heavily on a connected natural gas line, the WEN TF1450X is a formidable and cost-effective choice. It’s one of the most powerful Best Natural Gas Portable Generators, offering great value for its high output and fuel flexibility. To learn more about how these units compare to permanent systems, check out our guide on best natural gas home generators.
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4. Westinghouse 8200 Peak Watt Tri-Fuel Portable Inverter Generator
The Westinghouse iGen8200TFc is a unique offering, blending the benefits of an inverter with the high power and Tri-Fuel flexibility of a traditional portable generator. This model is ideal for users who need a powerful backup solution but prioritize clean power and quiet operation. With 6560 peak watts on natural gas, it provides sufficient power for essential circuits, and its ability to run on gasoline, propane, or natural gas makes it incredibly versatile.
The core advantage of this model is its inverter technology, which produces clean power (less than 3% THD) that is safe for sensitive electronics like laptops and medical equipment. Operating at approximately 60 dBA, it is significantly quieter than open-frame models. Furthermore, it features a 50A outlet for home backup connection, which is a rare and highly useful feature in an inverter generator. The lightweight design (134.5 pounds) and remote start add to its user-friendliness, making it a powerful and portable option in the Best Natural Gas Portable Generators category.
Verdict: This is the perfect unit for those who need a mix of high power, quiet operation, and clean electricity. While the overall running wattage is lower than open-frame units, its low THD makes it a superior choice for powering a home full of sensitive devices. If you need a powerful and quiet inverter generator that can run on natural gas, this model is highly recommended. You can see how this compares to other options in our guide on best tri-fuel generators.
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5. WEN 4,750-Watt Dual Fuel Portable Generator (DF475T)
The WEN DF475T is a practical and cost-effective Dual Fuel generator, making it an excellent option for users who need dependable power for camping, tailgating, or light home backup. While it is strictly a dual-fuel (gasoline/propane) model, its inclusion offers a strong option for those seeking fuel flexibility at a lower price point, potentially adaptable to natural gas with an aftermarket conversion kit (sold separately). With 3800 running watts on gasoline, it can handle essential needs like lights, a refrigerator, and small tools.
This unit features a 224cc 4-stroke OHV engine and an Electric Start for simple operation. The 4-gallon fuel tank provides up to 11 hours of runtime at half load on gasoline, giving it excellent endurance for its size. It’s also relatively lightweight at 105.8 pounds, making it genuinely portable for jobsites or recreational use. It can switch between 120V and 240V operation and includes a NEMA L14-30R twist lock, making it ready for a basic home transfer switch setup. The simple, robust design is built for reliable performance.
Verdict: If your budget is tight and you need a basic, reliable, and portable generator with fuel flexibility, this is a great starter model. Its versatility and low cost make it attractive, though buyers should note the lack of out-of-the-box natural gas support. This model is one of the more straightforward dual fuel generators for essential power needs.
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6. Westinghouse 14500 Peak Watt Tri-Fuel Home Backup Portable Generator
As one of the most powerful Tri-Fuel units available, the Westinghouse 14500 Peak Watt model is designed for users with large homes or significant power demands. It delivers an outstanding 9,500 running watts on natural gas, which is sufficient to power most large homes’ vital systems and high-draw appliances simultaneously. This generator truly excels as a versatile backup solution, offering operation on gasoline, propane, and natural gas. The enormous 9.5-gallon fuel tank also provides an impressive 19 hours of run time on gasoline at a quarter load.
The unit features a heavy-duty 550cc 4-Stroke OHV Westinghouse Engine, built for endurance and high output. It includes a CO Sensor and Automatic Voltage Regulation for safer and cleaner operation, with low THD making it suitable for sensitive electronics. Although it’s a large machine at 230 pounds, the robust wheel kit is necessary for positioning this powerful unit. The electric start makes it convenient to fire up when needed.
Verdict: For maximum wattage and the benefit of continuous natural gas operation, this Westinghouse model is a top-tier choice. Its blend of extreme power, long run time, and Tri-Fuel capability makes it one of the Best Natural Gas Portable Generators for users who want near-whole-home backup without installing a permanent standby system.
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7. DuroMax XP13000EH 13,000-Watt Dual Fuel Portable Generator
The DuroMax XP13000EH is a staple in the dual-fuel market, known for its sheer power and durable, all-metal construction. While it is natively a gasoline/propane dual-fuel unit, its 13,000 peak watts of power make it a prime candidate for aftermarket natural gas conversion for homeowners prioritizing a reliable engine block. This is a generator designed for whole-home backup, capable of handling high-amperage appliances with ease. Its robust frame is built to withstand severe weather and heavy wear-and-tear.
The Electric Start makes firing up the powerful DuroMax engine simple, and the front-facing interface allows for quick fuel changes. It comes equipped with a transfer switch-ready 50-amp outlet, a feature typically found on higher-end units, simplifying permanent home connection. Although it lacks the third fuel option out of the box, it offers superior power and construction compared to many other generators in its class. The CO Sensor is an important included safety feature, protecting users from dangerous carbon monoxide buildup.
Verdict: If you are comfortable with an aftermarket natural gas conversion and demand a high-wattage, extremely durable dual-fuel generator, the XP13000EH is a proven workhorse. It is a powerful option for emergency power needs and remains a popular choice despite not being one of the Best Natural Gas Portable Generators right out of the box. For more options like this, see our article on best dual fuel generators.
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8. Generac 10,000/8,000-Watt Portable Gas Generator – Electric Start – Home Backup or RV Ready – Heavy Duty Frame – Quiet, Long Runtime, Emergency Power – 49-State Compliant
The Generac GP8000E is a solid, reliable gas-powered generator, popular for its dependable name brand and use of PowerRush Advanced Technology, which delivers up to 40% more starting capacity for heavy loads. While it is a gasoline-only model, Generac is a huge name in home power solutions, and many users consider its reliability a major factor. The 8,000 running watts provide robust power for most household essentials, and the inclusion of COsense technology makes it a safe choice for emergency backup.
A key feature is the integrated COsense technology, which is a major safety highlight and automatically shuts down the generator if CO levels get too high. The unit offers an Extended Runtime of up to 11 hours at 50% load, thanks to its long-lasting OHV engine and large steel fuel tank. The convenient electric start, powered by an included battery, ensures that the generator is easy to operate during an outage. Its durable, heavy-duty frame protects the engine, making it a rugged option.
Verdict: This Generac model is an excellent, reliable option if you primarily use gasoline or are looking for a unit that could be converted to natural gas later. While not one of the Best Natural Gas Portable Generators out-of-the-box, its advanced starting power and COsense safety features make it a strong competitor for general emergency use.
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9. PowerSmart 4400-Watt Portable Inverter Generator
The PowerSmart 4400-Watt Inverter Generator is a compact and efficient unit ideal for recreational use, camping, or basic emergency backup power. While it is gasoline-powered, its inverter technology provides clean power for sensitive devices, and its small size makes it highly portable. With 3600 running watts, it can easily handle small appliances, lighting, and entertainment systems on a trip or during a brief outage. The focus here is on lightweight design and quiet operation.
A key selling point is its Super Quiet operation, rated at just 76 dB from 23 feet at 25% load, which is well-suited for noise-sensitive areas like campgrounds. Despite its small size, it provides a respectable 11 hours of runtime at 25% load from a 1.6-gallon fuel tank, making it highly fuel-efficient. The unit is also packed with safety features, including a CO-Sensor, low oil shutdown, and overload protection. However, its small output and single fuel source mean it is not a direct competitor to the Best Natural Gas Portable Generators for full home backup.
Verdict: For the buyer whose priority is a quiet, portable, and fuel-efficient generator for recreational or minimal home backup use, the PowerSmart is a great choice. Its focus on clean power and lightweight portability makes it stand out from the heavy-duty units reviewed above.
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10. Generac 10,000/8,000-Watt Portable Gas Generator – Electric Start – Home Backup or RV Ready – Heavy Duty Frame – Quiet, Long Runtime, Emergency Power – 49-State Compliant
The Generac GP8000E is a tried-and-true solution for reliable gasoline-powered backup. Its 8,000 running watts and use of PowerRush Advanced Technology ensure it can easily handle the high surge demands of appliances like air conditioners and refrigerators. This model focuses on providing robust, straightforward power for emergency situations. While it doesn’t run on natural gas, its brand legacy and advanced starting capacity make it a staple in the general portable generator market. The heavy-duty frame is designed for longevity and demanding use.
Equipped with Electric Start and an hour meter, the generator is user-friendly and easy to maintain. The most important safety feature is the integrated COsense technology, which continuously monitors carbon monoxide levels and automatically shuts down the unit if an unsafe level is detected. The large capacity steel fuel tank allows for an extended run time of up to 11 hours at a 50% load, which is essential for longer outages. Maintenance is also simplified with the low-oil level shutdown, which protects the engine from damage.
Verdict: This Generac unit is highly dependable for gasoline operation and prioritizes long runtime and user safety. It remains a quality option for emergency situations where gasoline is the primary fuel source. Its inclusion highlights the importance of strong engine performance and advanced technology, even in non-natural gas models.
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11. Gidrox 8000W Dual Fuel Inverter Generator
The Gidrox 8000W Dual Fuel Inverter Generator strikes an excellent balance between high output and clean, quiet power. It is a gasoline/propane Dual Fuel model that provides a massive 8000 starting watts on gas, making it a great option for RV users and home backup of sensitive electronics. Its inverter technology produces clean power with less than 3% THD, which is essential for safely running laptops, medical devices, and modern smart appliances. The RV compatibility, including a dedicated adapter, is a major plus.
Performance is managed by a powerful 317cc 4-stroke OHV engine. The generator features both one-touch electric start and a backup pull cord for reliability in all conditions. The ECO Mode is a notable feature that automatically adjusts engine speed under light loads, which saves fuel, reduces emissions, and lowers the noise level to a quiet 74 dB. It includes a built-in CO sensor and low-oil shutdown for safety and engine protection. While not one of the native Best Natural Gas Portable Generators, it’s a powerful dual-fuel inverter.
Verdict: For buyers prioritizing quiet operation, clean power, and a large starting wattage in a compact inverter format, the Gidrox 8000W is a strong contender. It’s a premium choice for RV travelers and homeowners with sensitive electronics who require high power output and flexible fuel options (gasoline/propane).
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12. DuroMax XP16000iH 16,000-Watt Dual Fuel Portable Digital Inverter Generator
The DuroMax XP16000iH sets a new standard for high-wattage inverter technology. With a staggering 16,000 peak watts, it provides the power of a large conventional generator with the clean, stable output of an inverter. While it’s a Dual Fuel (Gas/Propane) unit, its sheer power and advanced features make it an essential comparison point. It’s perfect for whole-home backup, ensuring that even large appliances run smoothly and safely on its inverter-grade power.
The Inverter Technology provides clean power for sensitive electronics, a major advantage for a unit this size. It features a convenient Remote Start for effortless operation and a Digital Control Center with an LCD display showing vital information like hours run and voltage output. As expected for this wattage, the unit is heavy (368 pounds), placing it on the less portable end of the spectrum. The inclusion of a Battery Tender is a thoughtful detail, ensuring the unit is always ready for an emergency start.
Verdict: This is a premium, powerful generator for users who demand the highest wattage combined with the superior, clean power of an inverter. It is one of the most powerful inverter generators available. If power and clean electricity are your top priorities, and you are comfortable with dual-fuel operation (or conversion), this unit is difficult to beat, even among the Best Natural Gas Portable Generators.
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How to Choose Best Natural Gas Portable Generators
A portable generator that can run on natural gas offers unmatched convenience and nearly limitless run time during extended power outages, as it connects directly to your existing home gas line. This eliminates the need to store and transport liquid fuels like gasoline. Choosing the right Best Natural Gas Portable Generators, however, is a critical decision that depends on your specific power needs. The most important factors are wattage, fuel type versatility (Tri-Fuel vs. conversion), and necessary safety features like CO detection.
Wattage (Running & Surge)
Wattage determines how many devices and appliances your generator can run simultaneously. Surge wattage is the brief, extra power needed to start large motors (like refrigerators or A/C units), while running wattage is the continuous power it can supply. You must calculate the running watts of all critical items you intend to use and ensure the generator’s natural gas wattage (which is typically lower than gasoline) exceeds that total.
Fuel Versatility (Tri-Fuel vs. Dual-Fuel)
Fuel versatility adds a layer of security. Tri-Fuel generators run on gasoline, propane, and natural gas out of the box, offering the most options. Dual-Fuel models run on gas and propane. While many dual-fuel units can be converted to natural gas, a factory Tri-Fuel model is easier, safer, and retains the warranty. For continuous backup, always prioritize a model designed for natural gas operation.
Inverter vs. Conventional
Conventional open-frame portable generators offer the highest overall wattage and are generally cheaper. However, they are louder and produce power with higher Total Harmonic Distortion (THD). Inverter technology generators are quieter, produce clean power (low THD—safe for sensitive electronics), and are often more fuel-efficient, though they typically have a lower maximum output.
Connection Type & Transfer Switch Readiness
Your generator should have the correct outlets to connect to your home via a manual transfer switch. Look for NEMA L14-30R (30-amp) or, for higher-demand homes, NEMA 14-50R (50-amp) outlets. This allows the generator to safely power circuits without back-feeding the grid, an extremely dangerous practice. For legal and safe power integration, understanding the basics of an electric generator is important.
Safety Features (CO Sensor)
Operating a portable generator safely is paramount. Carbon Monoxide (CO) is an odorless, deadly gas. A mandatory safety feature to look for is an integrated CO sensor (like Generac’s COsense or WEN’s CO Watchdog) that automatically shuts the unit down if dangerous levels of CO accumulate around the generator.
Understanding Natural Gas Generator Efficiency
One key insight when shopping for the Best Natural Gas Portable Generators is understanding efficiency. While gasoline is measured by gallons per hour, natural gas is measured in cubic feet per hour (CFH). Natural gas provides a continuous, cheap supply, but it has a lower energy density than gasoline or propane. This is why a generator’s wattage rating is always lower when running on natural gas—a concept called “derating.”
Moreover, while natural gas doesn’t require refueling, ensure your home’s existing gas delivery system (pipe size and regulator capacity) can supply the required CFH for your generator’s full load. A powerful generator may starve for fuel if the pipe is too small, leading to poor performance. Always consult a qualified plumber or gas technician to confirm your home’s system can handle the generator’s gas demand before purchase.
How to Use Best Natural Gas Portable Generators
A Best Natural Gas Portable Generators unit requires proper setup to ensure safe and efficient operation. Here are the practical usage steps:
- Setup/Prep: Place the generator outdoors, far away from all doors, windows, and vents. Connect the natural gas line to the generator’s dedicated inlet using a flexible, certified gas hose with quick-connect fittings. Ensure the generator is on a stable, level surface.
- Core Usage & Best Practices: Start the generator using the electric or remote start feature. After it stabilizes, begin connecting your appliances or engaging the manual transfer switch. To maximize efficiency, use the generator’s ECO mode (if available) under light loads to save fuel and reduce noise.
- Optimization/Safety/Maintenance: Never operate a generator in an enclosed space. Routinely check the oil level and change it according to the manufacturer’s schedule. Always check the function of the CO sensor, and be sure the gas line connection is secure to prevent leaks.
- Troubleshooting & Pro Tips: If the generator stalls, check the fuel supply and ensure the load is not exceeding the running wattage on the current fuel. For natural gas operation, if the unit struggles under heavy load, your home’s gas system may be the limiting factor. Consult a professional about upgrading the line size.
Frequently Asked Questions
Do natural gas portable generators require an electrical cord?
Yes, all portable generators, including Best Natural Gas Portable Generators, still require heavy-duty extension cords or a power cord connected to a manual transfer switch to deliver electricity to your home’s circuits. The natural gas line only replaces the fuel source (gasoline/propane) and does not transmit electricity.
How much power loss occurs when running a generator on natural gas?
Generators typically see a power loss (derating) of around 15% to 25% when switching from gasoline to natural gas. This is due to the lower energy density of natural gas. Always check the manufacturer’s specification table for the exact running watts on natural gas before purchasing.
Are natural gas portable generators safe for indoor use?
Absolutely not. All combustion engine generators, including those running on natural gas, produce deadly carbon monoxide (CO) gas. They must be operated outdoors and far away from any occupied building, including doors, windows, and vents, to prevent CO poisoning.
Can I convert a gasoline generator to run on natural gas?
Yes, many gasoline or dual-fuel generators can be converted to Tri-Fuel (including natural gas) using professionally-installed aftermarket conversion kits. However, this may void the manufacturer’s warranty, so it is generally safer and more reliable to purchase a factory-built Tri-Fuel model if natural gas is a priority.
How long can a natural gas portable generator run continuously?
When connected to a continuous home natural gas supply, a Best Natural Gas Portable Generators unit can theoretically run indefinitely, provided it is properly maintained (oil changes, etc.) and not subjected to extreme wear. The limit is determined by the engine’s endurance and maintenance schedule, not the fuel supply.
Final Thoughts
Selecting the right generator means balancing wattage with fuel security and clean power. When evaluating Best Natural Gas Portable Generators, ensure the natural gas running wattage meets your core power demands, not just the higher gasoline rating. Prioritize models with modern safety features like CO detection and consider the benefits of a low-THD inverter for your sensitive home electronics. Ultimately, the best investment is the unit that provides seamless, long-term power backed by reliable engine technology.
For most buyers seeking a powerful and versatile natural gas backup solution, the Westinghouse 12500 Peak Watt Tri-Fuel Home Backup Portable Generator offers the best balance of performance and fuel value, ready for permanent home connection. If you need a powerful inverter that is significantly quieter and prioritizes clean power for all your electronics, choose the Westinghouse 8200 Peak Watt Tri-Fuel Portable Inverter Generator for its inverter benefits and Tri-Fuel flexibility.
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