The Best Natural Gas Portable Generator For Home in 2025: Reviews & Rankings

Source: Amazon

Best Tri-Fuel Power: Westinghouse 28000 Peak Watt Tri-Fuel Home Backup Portable Generator

Pros:

• High Wattage Capacity

• Clean Power Output

• Remote Electric Start

• Long Run Time

Cons:

• Heavy Build

This Westinghouse 18000-watt tri-fuel generator delivers impressive versatility and power for residential backup use. With 18,000 peak watts on gasoline and 14,500 running watts, it can easily support whole-home energy needs or handle demanding loads during outages. Its tri-fuel capability allows users to switch between gasoline, propane, or natural gas, giving more flexibility depending on availability and cost. The 713cc V-Twin OHV engine with cast-iron sleeve ensures durability and smooth operation, while the automatic idle control and voltage regulation help maintain consistent output.

The digital display and remote electric start enhance convenience, and the low THD (total harmonic distortion) means it’s safe for sensitive electronics like computers and TVs. With up to 12 hours of runtime on a full 10.57-gallon tank, the generator balances endurance and efficiency well. Though its 348-pound weight makes it less portable, the included wheels and handle setup help manage movement. Overall, users appreciate its strong tri-fuel performance, reliability, and clean power delivery—though some note that its bulk limits mobility compared to smaller models.

Best Tri-Fuel Versatility: Westinghouse 18000 Peak Watt Tri-Fuel Home Backup Portable Generator

Pros:

• Strong Power Output

• Safe for Electronics

• Easy Remote Start

• Long Runtime

Cons:

• Heavy to Transport

The Westinghouse 18000-watt tri-fuel generator stands out for its exceptional flexibility and dependable home backup capability. Delivering up to 18,000 peak watts on gasoline and 14,500 running watts, it handles multiple large appliances simultaneously, making it ideal for residential emergency power. Its tri-fuel design supports gasoline, propane, and natural gas, giving homeowners more control over fuel choice and cost-efficiency during long outages.

The heavy-duty 713cc V-Twin OHV engine with a cast-iron sleeve provides lasting performance, while automatic idle control, voltage regulation, and a CO sensor ensure both efficiency and safety. The digital display keeps users informed of runtime and maintenance needs, and the remote electric start adds convenience. Its low THD power output makes it safe for sensitive electronics such as computers or televisions. Although its 348-pound frame is on the heavier side, built-in wheels and handles simplify setup and movement. Overall, customers value its powerful tri-fuel capability, quiet operation for its size, and reliable all-weather performance—making it a trusted option for whole-home backup use.

Best Tri-Fuel Inverter: GENMAX Tri Fuel Generator,10500-Watt 458cc Tri Fuel Gasoline Propane Natural

Pros:

• High Power Output

• Clean Low-THD Power

• Remote & ATS Start

• Full Protection System

Cons:

• Limited Warranty Duration

The GENMAX GM10500iETC tri-fuel inverter generator combines versatility, clean power, and advanced controls in one powerful unit. Delivering 10,500 starting watts and 8,500 running watts on gasoline, it provides enough capacity to support high-demand equipment like air conditioners or compressors while maintaining less than 3% total harmonic distortion, keeping sensitive electronics safe. Its tri-fuel design allows users to switch seamlessly between gasoline, propane, and natural gas, offering flexibility during fuel shortages or emergencies.

The smart control panel stands out with features like automatic transfer switch (ATS) compatibility, a 50A plug, remote electric start, and an LCD display for real-time monitoring. Safety is enhanced through a built-in CO shutoff system, overload protection, and multiple circuit safeguards. Users also benefit from its neutral floating option for easy home connection and a bundled set of accessories, including hoses, plugs, and a rain cover.

Although the one-year warranty is shorter than some competitors, the GENMAX GM10500iETC earns strong marks for its balance of quiet performance, efficient tri-fuel operation, and user-friendly design. Homeowners often appreciate its inverter-grade clean power and flexibility, making it a practical choice for both home backup and outdoor applications.

Best Quiet Tri-Fuel Power: Gidrox 10000W Tri-Fuel Portable Inverter Generator

Pros:

• Long 21-Hour Runtime

• Low-Noise Operation

• Clean, Low-THD Power

• Remote & ATS Ready

Cons:

• Slightly Bulky Design

The Gidrox GNV10000T tri-fuel generator offers an ideal mix of high performance, quiet operation, and smart control for home backup use. Delivering 10,000 peak watts and 8,000 running watts on gasoline, it’s powerful enough to handle large household appliances or RV systems. Its tri-fuel flexibility allows seamless switching between gasoline, propane, and natural gas using a simple rotary selector—ensuring power reliability in any situation. The 499cc OHV engine produces less than 3% total harmonic distortion, providing safe, stable energy for electronics like laptops and TVs.

With an 8.7-gallon tank and up to 21 hours of runtime at 25% load, it excels in long outages or overnight operation. The integrated CO sensor, ECO Mode, and overload protection enhance safety and efficiency, while its 65 dB noise level keeps it significantly quieter than most open-frame units. The ATS-ready port and 50A connection make it easy to integrate into home electrical systems, and the remote start feature adds convenience during harsh weather.

Overall, customers value the Gidrox GNV10000T for its quiet performance, long-lasting runtime, and robust tri-fuel flexibility. While its larger frame makes it less portable, its reliability and intelligent design make it a strong choice for homeowners seeking consistent whole-home backup power.

Best Whole-Home Tri-Fuel Power: DuroMax XP13000HXT 13,000-Watt 500cc Tri Fuel Gas Propane Natural

Pros:

• Strong 13,000W Output

• Simple Fuel Switching

• Remote Electric Start

• Transfer Switch Ready

Cons:

• Heavy for Frequent Transport

The DuroMax XP13000HXT tri-fuel generator is built for serious home and commercial backup power. With a peak output of 13,000 watts, it easily supports entire households during outages or large equipment on job sites. Its tri-fuel design offers unmatched flexibility, allowing seamless operation on gasoline, propane, or natural gas—making it ideal for users who prioritize reliability and fuel availability in any situation.

Powered by a 500cc OHV engine, the generator delivers consistent, efficient performance with solid power output across all fuel types. The intuitive front-facing control panel and quick fuel selector simplify operation, while the push-button and remote start features add convenience during emergencies. A CO Alert system provides added protection by shutting down the generator if unsafe carbon monoxide levels are detected.

Although the 240-pound frame limits portability, the included wheel and handle kit make it manageable to move when needed. Overall, users praise the DuroMax XP13000HXT for its dependable performance, ease of use, and powerful tri-fuel versatility—making it a trusted, all-in-one solution for both residential and professional backup needs.

Determining the best whole house natural gas generator involves considering factors such as reliability, power output, efficiency, and brand reputation. Some top-rated options in the market include:

Generac Guardian Series: Generac is a well-known brand in the generator industry, and their Guardian Series offers a range of whole house natural gas generators with various power capacities and features. These generators are known for their reliability, quiet operation, and seamless automatic transfer switch integration.
Kohler Whole House Generators: Kohler is another reputable brand that offers whole house natural gas generators known for their durability and performance. Kohler generators come with advanced features such as remote monitoring and automatic load management, making them suitable for larger homes.
Briggs & Stratton Fortress Series: Briggs & Stratton's Fortress Series includes natural gas generators designed to provide reliable backup power for the entire home. These generators feature durable construction, quiet operation, and advanced electronics for seamless integration with your home's electrical system.

What size natural gas generator do I need for my house?

To determine the size of the natural gas generator needed for your house, you'll need to calculate the total wattage of all the appliances and systems you want to power during a blackout. Here's a general guideline:

Make a list of all essential appliances and systems, including lights, heating and cooling systems, refrigerators, sump pumps, and other critical devices.
Determine the wattage rating of each appliance and system. You can usually find this information on the appliance's label or in the owner's manual.
Add up the total wattage to find the minimum size generator you'll need to power your entire house.
Consider adding a margin of safety to account for potential power surges and future additions to your home.

Are portable natural gas generators any good?

Portable natural gas generators can be a good option for providing backup power in certain situations, but they have limitations compared to whole house standby generators. Here are some factors to consider:

Portability: Portable natural gas generators are typically smaller and lighter than standby generators, making them easier to move around. This can be advantageous if you need backup power in multiple locations or during outdoor activities such as camping or tailgating.
Power Output: Portable natural gas generators generally have lower power output compared to whole house generators, so they may not be able to power all essential appliances and systems in your home simultaneously.
Fuel Consumption: Portable natural gas generators tend to have higher fuel consumption compared to standby generators, which can result in more frequent refueling during extended power outages.
Noise Level: Portable generators can be louder than whole house generators, which may be a concern if you live in a densely populated area or need backup power for extended periods.

Can portable generators run on natural gas?

Most portable generators are designed to run on gasoline, but there are conversion kits available that allow some models to run on natural gas. These conversion kits typically involve installing a regulator and fuel lines to connect the generator to a natural gas source. However, it's essential to check the compatibility of your generator with a natural gas conversion kit and follow the manufacturer's instructions carefully to ensure safe and proper operation. Additionally, keep in mind that running a portable generator on natural gas may affect its performance and warranty.

Choosing the best natural gas portable generator for home comes down to balancing power output, fuel efficiency, and long-term reliability. Natural gas models have become a preferred choice for homeowners seeking a cleaner, low-maintenance, and readily available fuel source compared to gasoline or diesel options.

Whether you need backup power for essential appliances during outages or a dependable energy source for extended use, the right generator should deliver consistent performance with minimal environmental impact. Models that feature automatic startup, advanced safety sensors, and quiet operation stand out as the most practical options for residential settings.

In short, investing in a high-quality natural gas portable generator ensures your home stays powered, safe, and comfortable no matter the circumstances. It’s not just about convenience—it’s about peace of mind and long-term energy resilience.