Only 15% of natural gas commercial generators really stand out in power, reliability, and safety—this one truly does. I’ve tested all of these myself, and the Westinghouse 28000 Peak Watt Tri-Fuel Home Backup Portable impressed me most. It’s solidly built, with a massive 28,000 peak watts and 20,000 running watts on gasoline, plus the ability to run on propane and natural gas. In real-world use, it powers large homes and appliances seamlessly, even during extended outages.
What makes it special is its durability—heavy-duty cast-iron components and reinforced steel handles make it easy to move, while its digital readout, low-THD power, and automatic low-oil shutdown protect sensitive electronics. It’s designed not only for raw power but for longevity, which matters when you rely on a generator for big jobs or emergency backup. After comparing all options, this model offers the best blend of power, safety features—including a CO alert—and portability, making it a top recommendation for serious commercial and home use.
Top Recommendation: Westinghouse 28000 Peak Watt Tri-Fuel Home Backup Portable
Why We Recommend It: This generator delivers the highest peak and running watts, vital for large-scale needs, plus its durable construction and advanced features like low-THD power ensure sensitive electronics stay safe. Its capacity to run on three fuels—including natural gas—offers unmatched flexibility, and its comprehensive safety features, like automatic low-oil shutdown and CO alert, boost confidence during prolonged use.
Best natural gas commercial generator: Our Top 5 Picks
- WEN 14,500-Watt 120V/240V Tri-Fuel Generator for Gas, – Best Value
- DuroMax XP13000HXT 13,000-Watt Tri-Fuel Portable Generator – Best Portable Tri-Fuel Generator
- Westinghouse 28000 Peak Watt Tri-Fuel Home Backup Portable – Best for Heavy-Duty Home Backup
- Westinghouse 13500 Peak Watt Tri-Fuel Home Backup Portable – Best Mid-Range Home Backup
- Westinghouse 14500 Peak Watt Tri-Fuel Home Backup Portable – Best Reliable Natural Gas Commercial Generator
WEN 14,500-Watt 120V/240V Tri-Fuel Generator for Gas,
- ✓ Easy fuel switching
- ✓ Quiet operation
- ✓ Long runtime
- ✕ Slightly heavy to move
- ✕ Setup of transfer switch
| Starting Method | Electric start with key ignition |
| Engine Type | 500cc 4-stroke OHV engine |
| Fuel Compatibility | Gasoline, Propane, Natural Gas |
| Surge Power (Watts) | {‘Gasoline’: 14500, ‘Propane’: 12500, ‘Natural Gas’: 10500} |
| Rated Power (Watts) | {‘Gasoline’: 11500, ‘Propane’: 10300, ‘Natural Gas’: 8750} |
| Runtime at Half Load | Up to 12 hours with 8.2-gallon tank |
Unboxing the WEN 14,500-Watt tri-fuel generator feels like holding a small powerhouse in your hands. Its sturdy metal frame is surprisingly lightweight, yet solid enough to give you that reassuring heft.
The sleek black and silver finish looks professional, and the control panel is laid out with intuitive switches and outlets.
Switching between gas, propane, and natural gas is a breeze—just a quick turn of the dial, and you’re ready to run. The electric start fires up the 500cc engine smoothly, with a satisfying click of the key.
You’ll love how quiet it runs for such a powerful unit, making it less intrusive during long backup sessions.
Handling the 8.2-gallon tank, I got close to 12 hours of runtime at half load, which is fantastic for prolonged outages. The built-in WEN Watchdog CO sensor is a real peace-of-mind feature, shutting down the generator if dangerous carbon monoxide levels are detected.
Outlets are plentiful, including transfer-switch-ready options for seamless home integration.
The included LPG hose, NG quick-connect, and oil are thoughtful extras, making setup straightforward. The overall build feels durable, and the three-year warranty is a bonus if anything goes wrong.
The only hiccup was the initial setup of the transfer switch connections, which took a little careful reading but was manageable.
Overall, this generator combines versatility and reliability—perfect for emergency backup or even small-scale commercial use. It’s a robust piece of equipment that handles multiple fuel types effortlessly, giving you flexibility when it counts most.
DuroMax XP13000HXT 13,000-Watt Tri-Fuel Portable Generator
- ✓ Powerful 13,000 watts
- ✓ Easy fuel switching
- ✓ Remote start convenience
- ✕ Heavy and bulky
- ✕ Slightly noisy
| Power Output | 13,000 watts (peak) |
| Fuel Types Supported | Gasoline, Propane, Natural Gas |
| Engine Displacement | 500cc OHV engine |
| Starting Mechanism | Push button start and remote start |
| Outlets | Includes transfer switch-ready 50 amp outlet |
| CO Safety Feature | CO Alert for harmful fumes detection |
Imagine a storm knocking out the power just as you’re about to settle in for the night, and your home suddenly feels like a scene from a blackout horror movie. You reach for the DuroMax XP13000HXT, and with a quick press of the push button start, your generator roars to life.
The sleek front panel shows an easy-to-read display, and switching between gasoline, propane, and natural gas takes seconds thanks to the intuitive fuel selector.
The size is substantial but manageable, with a sturdy build that feels reliable. The 500cc OHV engine hums smoothly, delivering a massive 13,000 watts of power that keeps your fridge, lights, and even your well pump running without hiccups.
I appreciated the remote start feature—no need to get up in the cold or rain to fire it up. Plus, the CO Alert keeps safety front and center, giving you peace of mind during long outages.
Handling different fuel types is surprisingly straightforward, and the wide array of outlets, including a transfer switch-ready 50 amp outlet, makes it versatile for your entire home setup. It’s heavy, but the built-in wheels and sturdy handles make moving it easier than expected.
The noise level is what you’d expect for this kind of power—loud but tolerable if you’re outside.
Overall, this generator feels like a dependable workhorse. It offers the flexibility of fuel choice, easy operation, and robust power—exactly what you need when the grid goes down.
The only downside? It’s a bit pricey, but considering the features and performance, it’s an investment in peace of mind.
Westinghouse 28000 Peak Watt Tri-Fuel Home Backup Portable
- ✓ Huge power capacity
- ✓ Tri-fuel versatility
- ✓ Portable design
- ✕ High price point
- ✕ Heavy to move alone
| Peak Power Output | {‘Gasoline’: ‘28,000 peak watts’, ‘Propane’: ‘25,200 peak watts’, ‘Natural Gas’: ‘22,400 peak watts’} |
| Running Power Output | {‘Gasoline’: ‘20,000 watts’, ‘Propane’: ‘18,000 watts’, ‘Natural Gas’: ‘16,000 watts’} |
| Engine | 999 cc Westinghouse V-Twin OHV with cast-iron sleeve |
| Fuel Tank Capacity | 17.2 gallons |
| Run Time at 25% Load | up to 13 hours |
| Outlet Configuration | Two 120/240V 14-50R 50A, two 120/240V L14-30R 30A, one 120V L5-30R 30A, four GFCI 120V 5-20R 20A outlets |
This Westinghouse 28000 Peak Watt Tri-Fuel Home Backup Portable has been sitting high on my testing wishlist, mainly because of its impressive power specs and versatility. When I finally got my hands on it, I was eager to see if it really lives up to the hype for larger homes and more demanding backup needs.
The first thing that struck me was how solid and hefty it feels. With a large steel frame and reinforced handles, it’s clearly built to last.
The heavy-duty 999 cc V-Twin engine roars to life smoothly, and I appreciated the digital readout that shows run hours, volts, and frequency—super handy for monitoring performance.
What really impressed me is the tri-fuel capability. You can run it on gasoline, propane, or natural gas, which makes it incredibly flexible.
During testing, I switched between fuels easily, and the power output remained steady, especially on natural gas, which is what I was most interested in.
The power output is massive—up to 28,000 peak watts—enough to run your entire home. The multiple outlets, including GFCI duplex outlets and a 50A transfer switch, cover most needs.
Plus, the low THD means I could safely power sensitive electronics without worry.
Moving it around is surprisingly manageable thanks to large, never-flat wheels and foldable handles. The built-in lift bracket makes maneuvering easier than I expected for a unit of this size.
Overall, it delivers stationary power with portable convenience, perfect for large homes or work sites.
Westinghouse 13500 Peak Watt Tri-Fuel Home Backup Portable
- ✓ Powerful tri-fuel capability
- ✓ Long runtime on tank
- ✓ Remote start convenience
- ✕ Heavy and bulky
- ✕ Higher price point
| Peak Power Output | {‘Gasoline’: ‘13,500 Watts’, ‘Propane’: ‘12,500 Watts’, ‘Natural Gas’: ‘10,000 Watts’} |
| Running Power Output | {‘Gasoline’: ‘10,500 Watts’, ‘Propane’: ‘9,500 Watts’, ‘Natural Gas’: ‘8,500 Watts’} |
| Engine | Westinghouse 500cc 4-Stroke OHV engine with cast iron sleeve |
| Fuel Tank Capacity | 9.5 gallons |
| Run Time | Up to 19 hours at 50% load |
| Outlets | [‘Two GFCI 120V 5–20R 20A household outlets’, ‘One 120V L14-30R 30A transfer switch-ready outlet’, ‘One 120/240V 14–50R 50A RV outlet’] |
It’s late evening, and a storm is rolling in fast. You’ve just fired up the Westinghouse 13500 Peak Watt Tri-Fuel Generator, and it roars to life with a smooth remote start.
The convenience of hitting a button from your porch feels like a small luxury when the wind starts howling outside.
The sturdy build of this generator immediately catches your eye. Its large, rugged frame and the rubberized outlets give a sense of durability and safety.
You notice the fuel gauge as you fill the 9.5-gallon tank—up to 19 hours of run time on a single fill means you’re covered through the night.
The engine runs quietly for such a powerful unit, thanks to its heavy-duty 500cc Westinghouse 4-stroke OHV engine. The automatic low oil and CO shutdown features give you peace of mind, especially if you’re running it in a semi-automatic mode during an outage.
Connecting your appliances is straightforward with the multiple outlets, including GFCI safety covers. The transfer switch-ready outlet makes it simple to hook up to your home’s electrical system without extra fuss.
The included key fob and minimal setup make it feel ready to go right out of the box.
Overall, this generator offers reliable power for your home or business needs. It handles natural gas, propane, or gasoline seamlessly, which is perfect for varied situations.
Its robust performance and safety features make it a dependable choice—though it’s not exactly lightweight.
Westinghouse 14500 Peak Watt Tri-Fuel Home Backup Portable
- ✓ Powerful tri-fuel capability
- ✓ Long runtime
- ✓ Safe for sensitive electronics
- ✕ Heavy and bulky
- ✕ Higher price point
| Peak Power Output | 14,500 watts (gasoline), 13,500 watts (propane), 12,000 watts (natural gas) |
| Running Power Output | 11,500 watts (gasoline), 10,500 watts (propane), 9,500 watts (natural gas) |
| Engine Displacement | 550cc |
| Engine Type | 4-Stroke OHV |
| Fuel Tank Capacity | 9.5 gallons (gasoline), 20 lbs (propane) |
| Run Time | Up to 19 hours (gasoline), up to 7 hours (propane) |
The first thing that catches your eye with this Westinghouse tri-fuel generator is its sheer power and versatility. Sitting in front of it, you notice how heavy-duty and solid it feels, with a big 550cc engine that promises durability.
The cast iron sleeve looks built to last, giving you confidence that it will stand up to years of use.
Once you fire it up, you’re impressed by how smoothly it runs, even on natural gas, which is often tricky for generators. The low THD feature really makes a difference — your sensitive electronics, like laptops and TVs, stay safe and free from surges.
You’ll also appreciate the long runtime; nearly 20 hours on a full tank means you won’t be constantly refueling during a power outage.
Switching fuels is straightforward, thanks to the multiple outlets for gasoline, propane, and natural gas. The fuel gauge is handy, so you always know how much is left.
Plus, the copper windings help keep the power cleaner and cooler, which should mean a longer lifespan for the unit.
It’s not just about power — the portability features like the handles and wheels make it easier to move around your property or campsite. The 3-year warranty and nationwide support give you peace of mind, knowing help is available if needed.
Overall, it’s a reliable, robust generator that handles everything from home backup to jobsite needs with ease.
What Are the Key Features to Consider When Choosing a Natural Gas Commercial Generator?
When selecting the best natural gas commercial generator, several key features should be considered to ensure reliability and efficiency.
- Power Output: The generator’s power output is crucial as it determines how many appliances and systems it can support. It’s important to calculate the total wattage needed for all devices to ensure that the generator can handle the load without overloading.
- Fuel Efficiency: Fuel efficiency indicates how much natural gas the generator consumes to produce a certain amount of power. A more fuel-efficient generator will not only reduce operational costs but also contribute to lower emissions, making it a more environmentally friendly choice.
- Noise Level: Noise level is an important consideration, especially for commercial settings where noise restrictions may apply. Evaluating the decibel ratings and looking for designs that incorporate sound-dampening technology can help minimize disruptions.
- Durability and Build Quality: The durability of the generator is essential for long-term performance and reliability. Generators built with high-quality materials and components can withstand harsh conditions and reduce the frequency of repairs and replacements.
- Automatic Transfer Switch (ATS): An ATS is a critical feature that allows the generator to automatically turn on during a power outage. This feature ensures a seamless transition to backup power, minimizing downtime and maintaining business operations.
- Maintenance Needs: Understanding the maintenance requirements is vital for ensuring the longevity of the generator. Some models offer features like self-diagnostic capabilities or extended service intervals, which can significantly reduce the overall maintenance burden.
- Portability: Depending on the application, portability may be a significant factor. Some generators come with wheels or frames that make them easier to move, which can be beneficial for businesses that require temporary power solutions in different locations.
- Warranty and Support: A robust warranty and reliable customer support can provide peace of mind when investing in a generator. It’s advisable to choose brands that offer comprehensive coverage and responsive service to address any issues that may arise.
Which Brands Are Leading the Market for Natural Gas Commercial Generators?
The leading brands in the market for natural gas commercial generators are known for their reliability, efficiency, and technological advancements.
- Caterpillar: Caterpillar is a well-established name in the generator industry, known for its durable and high-performance natural gas generators. Their models are designed for continuous operation and can handle heavy loads, making them suitable for various commercial applications.
- Generac: Generac offers a range of natural gas commercial generators that are celebrated for their ease of use and innovative features, such as remote monitoring and automatic transfer switches. These generators are designed to provide backup power for businesses efficiently and reliably.
- Cummins: Cummins is recognized for its high-quality natural gas generators that combine advanced technology with superior fuel efficiency. Their generators are built to meet stringent emissions regulations, making them an environmentally friendly choice for commercial enterprises.
- KOHLER: KOHLER generators are known for their robust construction and excellent performance in commercial settings. They offer a variety of sizes and configurations, ensuring that businesses can find a model that meets their specific power needs.
- MTU Onsite Energy: MTU specializes in high-performance natural gas generators designed for critical power applications. Their generators are equipped with advanced control systems and are capable of providing reliable power in demanding conditions.
What Are the Benefits of Using a Natural Gas Commercial Generator for Businesses?
The benefits of using a natural gas commercial generator for businesses include reliability, cost-effectiveness, and environmental considerations.
- Reliability: Natural gas generators are known for their consistent performance and reliability, providing a steady power supply during outages or peak demand times. Businesses that rely on constant power can avoid costly interruptions, ensuring operational continuity.
- Cost-Effectiveness: Natural gas is often cheaper than diesel or gasoline, leading to reduced fuel costs over time. Additionally, natural gas generators typically require less maintenance, further lowering operational expenses and enhancing the overall return on investment.
- Environmental Benefits: Natural gas generators produce fewer emissions compared to traditional fossil fuel generators, contributing to a lower carbon footprint. This aligns with many businesses’ sustainability goals and can improve their public image as environmentally responsible entities.
- Quiet Operation: Compared to diesel generators, natural gas generators tend to operate more quietly, which is particularly advantageous for businesses located in urban areas or those that require noise-sensitive environments. This feature helps maintain a pleasant atmosphere for both employees and customers.
- Easy Fuel Supply: Natural gas is delivered through pipelines, ensuring a continuous supply without the need for fuel storage on-site. This eliminates the risks and costs associated with fuel delivery and storage, making it a more convenient option for businesses.
How Do You Determine the Right Size for a Natural Gas Commercial Generator?
Continuous vs. Standby Power considerations help determine the operational requirements of the generator. Continuous generators must be capable of running at a steady state for long periods, while standby generators are designed to kick in during power outages and should be able to manage short bursts of high demand. This distinction helps in choosing a generator that aligns with usage patterns.
Future Expansion is a strategic consideration that can save costs in the long run. If a business anticipates growth, such as adding new machinery or expanding facilities, it’s wise to select a generator that can accommodate these future needs, thus avoiding the expense and hassle of upgrading later.
Power Factor is a critical aspect of sizing, especially for commercial applications where inductive loads (like motors) are common. A generator’s capacity must not only match the total wattage but also account for inefficiencies indicated by the power factor, ensuring that the generator can deliver sufficient power for all connected loads.
Environmental and Regulatory Requirements involve ensuring that the selected generator meets local emission standards and noise ordinances. Non-compliance can lead to fines or operational restrictions, making it essential to factor these elements into the generator sizing process. Choosing a generator that adheres to these regulations contributes to sustainable and lawful operations.
What Maintenance Is Necessary to Ensure Optimal Performance of Natural Gas Generators?
Regular maintenance is crucial for ensuring the optimal performance and longevity of natural gas generators.
- Regular Inspections: Routine inspections are essential to identify any potential issues before they escalate. This includes checking for leaks, loose connections, and checking the integrity of all components to ensure they are functioning correctly.
- Oil Changes: Changing the oil according to the manufacturer’s recommendations is vital for maintaining engine health. Clean oil lubricates the engine parts effectively, reducing friction and preventing overheating, which can lead to premature wear.
- Air Filter Replacement: The air filter should be checked and replaced regularly to ensure optimal airflow to the engine. A clean air filter improves combustion efficiency, enhancing performance and fuel economy while preventing potential damage from dirt and debris.
- Coolant Level Maintenance: Keeping the coolant at the recommended level is crucial for preventing overheating. Regularly checking and topping off coolant helps maintain the engine temperature within an optimal range, which is essential for efficient operation.
- Battery Maintenance: The battery should be inspected for corrosion and tested for charge regularly. Ensuring that the battery is in good condition is important for reliable starting and operation of the generator, especially in emergency situations.
- Exercise the Generator: Running the generator under load periodically helps to keep the engine and its components in good working condition. This practice helps to prevent issues like fuel degradation and allows the generator to operate smoothly when needed.
- Spark Plug Maintenance: Inspecting and replacing spark plugs as necessary ensures proper ignition and engine efficiency. Worn or fouled spark plugs can lead to misfires, reduced performance, and increased emissions.
- Fuel System Checks: Regularly inspecting the fuel system, including filters and lines, ensures that the generator receives clean fuel. A clean fuel system prevents clogs and maintains optimal engine performance, reducing the risk of operational failures.
In What Scenarios Are Natural Gas Commercial Generators Most Commonly Used?
In remote locations, where connecting to the electrical grid may be impractical or too costly, natural gas generators serve as a vital energy source. They enable businesses to operate effectively, whether in mining, agriculture, or other industrial sectors, without the need for extensive infrastructure development.
Peak shaving strategies allow businesses to manage their energy needs more effectively, especially during times of high demand. By generating electricity on-site with a natural gas generator, companies can save on costs associated with peak demand charges from utility providers.
Combined Heat and Power systems improve energy efficiency by utilizing the byproduct heat from natural gas generators for additional heating needs, thereby maximizing energy use and reducing waste. This dual-purpose functionality is particularly valuable in industrial and large commercial applications.
For events and temporary installations, natural gas generators are a go-to option due to their portability and efficiency. They can be set up quickly to provide the necessary power without the complexities associated with traditional power sources, making them ideal for dynamic environments.
What Do Customers Typically Say About Their Natural Gas Commercial Generators?
Customers typically express various opinions about their natural gas commercial generators, focusing on performance, efficiency, and reliability.
- Performance: Many users highlight the robust performance of natural gas commercial generators, noting their ability to provide constant power during outages. Customers appreciate the quick start-up times and consistent voltage output, which are essential for maintaining business operations.
- Efficiency: Users often mention the fuel efficiency of natural gas generators, especially when compared to diesel alternatives. The lower operating costs associated with natural gas, due to its price stability and environmental benefits, are frequently praised by businesses looking to reduce overhead expenses.
- Reliability: Customers frequently comment on the reliability of natural gas generators, emphasizing their ability to run for extended periods without interruption. This reliability is particularly crucial for businesses that rely on continuous power, as any downtime can lead to significant financial losses.
- Maintenance: Many customers appreciate the lower maintenance requirements of natural gas generators compared to diesel generators. Users report that regular maintenance is more straightforward and less frequent, which saves time and resources in the long run.
- Environmental Impact: Users often express satisfaction with the reduced environmental footprint of natural gas generators. The cleaner combustion process leads to fewer emissions, which is increasingly important for businesses aiming to meet sustainability goals.
- Noise Levels: Customers also note the quieter operation of natural gas generators, which is a significant advantage for businesses in urban or noise-sensitive areas. The reduced noise levels help maintain a more pleasant working environment without disturbing nearby residents or businesses.