10 The Best Home Backup Generator Natural Gas Reviews for 2025 | SHR

Source: Amazon

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

Pros:

• Massive wattage capacity

• Clean, low-THD output

• Whole-home compatibility

• Durable construction

Cons:

• Very heavy unit

The Westinghouse Tri-Fuel generator delivers exceptional power flexibility with gasoline, propane, and natural gas options, making it ideal for homeowners seeking a reliable full-house backup. Its 999 cc V-Twin engine and 28,000 peak watts provide strong, consistent energy output for large appliances or entire household systems. Built with automatic idle control, voltage regulation, and CO sensor protection, it balances performance with safety and efficiency. The generator’s digital display, multiple covered outlets, and 125A terminal block support easy monitoring and professional hardwiring for uninterrupted operation. Despite its high output, features like foldable handles, reinforced steel framing, and large wheels ensure mobility remains practical for its size.

From a customer perspective, users appreciate its tri-fuel versatility and clean power suitable for sensitive electronics, noting it runs smoothly even under heavy loads. The main drawback is its weight—over 550 pounds—which makes transport more challenging without assistance. Still, for those prioritizing reliability and all-in-one fuel flexibility, this Westinghouse model stands out as a powerhouse solution for serious home backup needs.

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

Pros:

• Strong wattage output

• Clean power for electronics

• Convenient remote start

• Includes full accessory kit

Cons:

• Heavy for one-person handling

The Westinghouse Tri-Fuel 18,000-watt generator strikes an excellent balance between power, versatility, and convenience for residential backup. Its 713 cc V-Twin OHV engine delivers reliable performance across gasoline, propane, and natural gas, offering up to 14,500 running watts—enough to power large appliances or an entire home during outages. The automatic idle control, CO sensor, and voltage regulation add crucial safety and efficiency, while the low-THD design ensures sensitive electronics stay protected.

Practicality shines through its easy electric and remote start, intuitive digital hour meter, and clearly labeled outlets, including transfer switch and RV-ready options. Westinghouse includes essential accessories like a cover, hose, funnel, and charger, making it nearly plug-and-play from the box.

From a customer’s perspective, users value its tri-fuel flexibility and smooth, quiet operation, especially during extended blackouts. Its only real drawback is the weight—over 340 pounds—which limits portability without assistance. Overall, it’s a robust and dependable choice for homeowners seeking a powerful, cleaner-running generator that adapts to multiple fuel sources.

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

Pros:

• Clean low-THD output

• Smart ATS compatibility

• Remote and electric start

• Rich protection features

Cons:

• Limited runtime for large loads

The GENMAX GM10500iETC stands out as a high-performance tri-fuel inverter generator engineered for flexibility and efficiency. With 10,500 starting watts and 8,500 running watts on gasoline, it supports heavy-duty appliances such as air conditioners, compressors, and power tools with ease. Its inverter technology maintains less than 3% total harmonic distortion, ensuring clean, stable power ideal for sensitive devices like laptops, TVs, and smartphones.

The control panel is thoughtfully designed, featuring remote start, automatic transfer switch (ATS) capability, and a voltage transfer switch for seamless 120V/240V operation. Multiple outlet types, including 50A and 30A plugs, make it ready for both home backup and RV use. Enhanced protection systems—covering overload, overvoltage, and short circuit—bolster reliability and user safety.

From a customer standpoint, users appreciate the smooth tri-fuel transition, intuitive controls, and notably quiet operation for its power class. The included rain cover, hoses, and plugs add practical value, making setup straightforward. Its main limitation is runtime under continuous heavy load, which some users find shorter than expected. Still, for those seeking a versatile, quiet, and advanced inverter generator with true multi-fuel capability, the GENMAX GM10500iETC offers impressive value and dependability.

Best All-Purpose Tri-Fuel: DuroMax XP13000HXT 13,000-Watt 500cc Tri Fuel Gas Propane Natural

Pros:

• High 13,000-watt capacity

• Quick fuel-switch interface

• Remote and push-button start

• Transfer switch ready

Cons:

• Heavy for frequent transport

The DuroMax XP13000HXT Tri-Fuel generator combines robust power output with exceptional versatility for both residential and commercial use. Delivering up to 13,000 watts, it can run multiple large appliances or serve as a full-house backup during outages. The 500cc OHV engine ensures reliable, long-lasting performance, while the tri-fuel capability—gasoline, propane, or natural gas—provides flexibility in fuel sourcing and extended run options.

Convenience features like the digital display, remote start, and user-friendly fuel selector interface enhance the overall experience, making operation quick and intuitive. Its wide range of outlets, including a 50A transfer switch-ready connection, supports various power needs from heavy tools to household systems. Safety is reinforced with the CO Alert technology, which automatically shuts down the unit if dangerous carbon monoxide levels are detected.

From a customer perspective, users praise its consistent performance, smooth fuel transition, and dependable backup reliability during storms. The main drawback is its 240-pound weight, which makes mobility a bit challenging despite the included wheel and handle kit. Overall, the XP13000HXT stands out as a powerful, flexible, and well-equipped generator ideal for homeowners who want both strength and convenience in one machine.

Best Balanced Tri-Fuel: Westinghouse 14500 Peak Watt Tri-Fuel Home Backup Portable Generator

Pros:

• Long 19-hour runtime

• Clean low-THD power

• Reliable 550cc engine

• User-friendly operation

Cons:

• Limited mobility due to weight

The Westinghouse Tri-Fuel 14,500-watt generator delivers a powerful yet balanced solution for home backup and emergency use. Offering 11,500 running watts on gasoline, 10,500 on propane, and 9,500 on natural gas, it provides strong, adaptable performance for a variety of residential needs. The 550cc OHV engine with a cast-iron sleeve ensures durability and steady operation even under heavy load, while the 9.5-gallon tank allows extended run times of up to 19 hours on gasoline.

This model prioritizes safe and stable output, with low total harmonic distortion (THD) suitable for powering sensitive electronics. Features like automatic voltage regulation, CO sensor, and overload protection enhance safety and reliability. The electric start and included key fob simplify operation, and a built-in fuel gauge, muffler, and hour meter contribute to everyday usability.

Determining the best whole house natural gas generator involves considering factors such as reliability, performance, fuel efficiency, and overall value for money. Several brands are known for producing high-quality natural gas generators suitable for powering entire homes during outages. Generac, Kohler, Briggs & Stratton, and Cummins are among the top brands recognized for their robust natural gas generators designed specifically for residential use. Generac, in particular, has gained widespread recognition for its reliable natural gas generators, backed by extensive warranty coverage and reliable customer support. However, the best natural gas generator for your home ultimately depends on your specific needs and preferences.

Are natural gas backup generators worth it?

Natural gas backup generators can be a worthwhile investment for homeowners looking for reliable backup power during outages. Compared to other fuel options such as propane or diesel, natural gas is often more readily available, cleaner burning, and less expensive. Natural gas backup generators are permanently installed outside the home and connected to the natural gas supply line, providing seamless automatic operation during power outages. They offer convenience, peace of mind, and the ability to power essential appliances and systems in your home, making them a valuable asset for homeowners seeking reliable backup power.

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

The size of the natural gas generator needed for your house depends on various factors, including the square footage of your home, the number of appliances and systems you wish to power simultaneously during an outage, and any special requirements (such as medical equipment). Natural gas generators typically range in size from around 8 kW to 150 kW or more, with larger generators capable of providing backup power to entire homes. Consulting with a professional electrician or generator dealer can help accurately determine the size of the natural gas generator needed to meet your household's power demands.

Can a whole house generator run on natural gas?

Yes, a whole house generator can run on natural gas. Natural gas is a common fuel choice for standby generators installed in residential settings. Whole house generators powered by natural gas are permanently installed outside the home and connected directly to the natural gas supply line. They are designed to automatically kick in when the power goes out, providing seamless backup power to your entire house within seconds. Natural gas generators offer convenience, reliability, and continuous operation during extended outages, making them an ideal choice for homeowners seeking uninterrupted power supply during emergencies.

Choosing the best home backup generator natural gas comes down to reliability, efficiency, and long-term convenience. Natural gas units stand out for their consistent power delivery, lower emissions, and minimal maintenance needs compared to gasoline or diesel models. They are especially valuable during extended outages since they connect directly to your home’s gas line, eliminating the need for constant refueling.

When evaluating your options, prioritize features like automatic transfer switches, robust wattage output, and safety mechanisms such as CO sensors and overload protection. Also, consider the generator’s noise level and overall build quality to ensure it fits your household’s comfort and energy demands.

Ultimately, investing in a high-quality natural gas backup generator is not just about keeping the lights on—it’s about ensuring security, comfort, and peace of mind when the unexpected happens.