5 Best Natural Gas Generators for Home Backup Power
The best natural gas generators for home depends on your needs. The Westinghouse 12500 Peak Watt Tri-Fuel is best for budget-conscious homeowners needing reliable backup power, while the Westinghouse 8200 Peak Watt Inverter excels at protecting sensitive electronics with low THD technology. For larger homes requiring maximum power output, the Westinghouse 14500 Peak Watt stands out with 12,000 peak watts on natural gas.
Natural gas generators offer unlimited runtime when connected to your home’s gas line, eliminating the need to refuel during extended outages. These tri-fuel models give you flexibility to switch between natural gas, propane, and gasoline based on availability and cost.
Quick Comparison Table
| Product | Natural Gas Peak Watts | Natural Gas Running Watts | Engine Size | Runtime (Gas) | Inverter Technology | Warranty |
|---|---|---|---|---|---|---|
| Westinghouse 12500W Tri-Fuel | 9500W | 7500W | 457cc | 12 hours | No | 3 years |
| Westinghouse 13500W Tri-Fuel | 10000W | 8500W | 500cc | 19 hours | No | 3 years |
| Westinghouse 14500W Tri-Fuel | 12000W | 9500W | 550cc | 19 hours | No | 3 years |
| Generac 12500W Tri-Fuel | N/A | N/A | OHV | 9.5 hours | No | Standard |
| Westinghouse 8200W Inverter | 6560W | 5280W | 298cc | 17 hours | Yes | 3 years |
Best Natural Gas Generators for Home
1. Westinghouse 12500 Peak Watt Tri-Fuel Generator – Best Budget Option
Best for: Homeowners seeking affordable tri-fuel backup power with remote start convenience.
Key Features:
| Feature | Details |
| Natural Gas Output | 9500 peak, 7500 running watts |
| Engine | 457cc OHV with cast iron |
| Starting System | Remote, electric, recoil start |
| Runtime | 12 hours on gasoline |
| Safety Features | CO shutdown, low oil protection |
The Westinghouse 12500 is the best entry-level tri-fuel generator for homeowners seeking reliable backup power without breaking the bank. At under $900, it delivers impressive versatility across three fuel types.
The heavy-duty 457cc engine features a cast iron sleeve for long-lasting durability. It produces 7500 running watts on natural gas, enough to power essential appliances during outages.
Remote start capability with the included key fob means you can fire up the generator from inside your home. The transfer switch ready L14-30R outlet simplifies whole-home backup integration.
The 6.6-gallon fuel tank with gauge provides 12 hours of runtime on gasoline at 50% load. Automatic CO shutdown adds critical safety protection for your family.
This generator comes ready to use with battery charger, oil, funnel, and tool kit included. The 3-year warranty and nationwide service network provide peace of mind for your investment.
Pros:
- Most affordable tri-fuel option
- Remote start convenience
- Transfer switch ready
- CO safety shutdown
Cons:
- Lower natural gas output
- Shorter runtime than larger models
2. Westinghouse 13500 Peak Watt Tri-Fuel Generator – Best Mid-Range Power
Best for: Medium to large homes needing extended runtime and higher wattage capacity.
Key Features:
| Feature | Details |
| Natural Gas Output | 10000 peak, 8500 running watts |
| Engine | 500cc OHV with cast iron |
| Fuel Tank | 9.5 gallons with gauge |
| Runtime | 19 hours on gasoline |
| Outlets | Transfer switch and RV ready |
The Westinghouse 13500 delivers the sweet spot between power and price for most homeowners. It provides 8500 running watts on natural gas, sufficient for running air conditioning plus essential appliances simultaneously.
The robust 500cc engine with cast iron sleeve ensures reliable operation for years. The larger 9.5-gallon fuel tank extends runtime to 19 hours on gasoline, reducing refueling frequency during prolonged outages.
Remote start with key fob lets you activate the generator without stepping outside in bad weather. All outlets feature protective rubber covers for safe operation in outdoor conditions.
The transfer switch ready outlet simplifies professional installation for whole-home backup. RV-ready 50A outlet adds versatility for recreational vehicle use.
Automatic low oil and CO shutdown protect both the engine and your family. The included battery charger, oil, and tools get you running immediately after minimal assembly.
Pros:
- 19-hour runtime capability
- 8500W running on natural gas
- Large 9.5-gallon fuel tank
- Remote start included
Cons:
- Higher price than base model
- Heavier weight for portability
3. Westinghouse 14500 Peak Watt Tri-Fuel Generator – Best for Large Homes
Best for: Large homes requiring maximum power output for multiple high-wattage appliances.
Key Features:
| Feature | Details |
| Natural Gas Output | 12000 peak, 9500 running watts |
| Engine | 550cc OHV with cast iron |
| THD Rating | Low THD for electronics |
| Windings | Durable copper construction |
| Runtime | 19 hours on gasoline |
The Westinghouse 14500 is the most powerful option for homeowners who need to run everything during outages. With 9500 running watts on natural gas, it handles central air conditioning, refrigerators, and power tools simultaneously.
The massive 550cc engine with cast iron sleeve provides industrial-grade durability. Low THD output protects sensitive electronics like computers, TVs, and smart home devices from power fluctuations.
Copper windings produce cleaner power while helping the generator run cooler and last longer. The 9.5-gallon fuel tank delivers 19 hours of continuous operation on gasoline.
Remote electric start eliminates manual pull-starting hassles. The transfer switch ready design integrates seamlessly with professional whole-home backup systems.
This premium model justifies its higher price with superior power output and electronics-safe operation. The 3-year warranty backs Westinghouse’s confidence in build quality.
Pros:
- Highest natural gas output
- Low THD for sensitive electronics
- Copper windings for longevity
- 19-hour extended runtime
Cons:
- Most expensive standard model
- Requires more storage space
4. Generac 12500 Starting Watt Tri-Fuel Generator – Best for Rugged Use
Best for: Homeowners prioritizing durability and easy fuel switching in harsh conditions.
Key Features:
| Feature | Details |
| Peak Output | 12500 watts starting power |
| Fuel Selector | Seamless switching between fuels |
| Safety Technology | COsense shutdown system |
| Construction | Steel-tube cradle frame |
| Wheels | Heavy-duty never-flat design |
The Generac GP9500 brings trusted brand reliability to the tri-fuel generator market. Its fuel source selector allows seamless switching between gas, propane, and natural gas without shutting down the unit.
The rugged steel-tube cradle provides exceptional durability for jobsite or emergency use. Covered outlets protect connections from weather and debris in harsh outdoor environments.
COsense technology actively monitors carbon monoxide levels and automatically shuts down the generator if dangerous concentrations are detected. This advanced safety feature surpasses basic CO sensors.
Never-flat wheels ensure reliable mobility even after long storage periods. The electric start system with included battery eliminates manual cranking frustration.
The large-capacity steel fuel tank with built-in gauge delivers 9.5 hours of runtime at 50% load. Generac’s reputation for quality and extensive dealer network provide strong after-sale support.
Pros:
- Advanced COsense safety technology
- Seamless fuel switching capability
- Rugged steel construction
- Never-flat wheels
Cons:
- Shorter runtime than competitors
- Limited natural gas specs provided
5. Westinghouse 8200 Peak Watt Tri-Fuel Inverter Generator – Best for Electronics
Best for: Homeowners with sensitive electronics needing quiet, clean power with home backup capability.
Key Features:
| Feature | Details |
| Natural Gas Output | 6560 peak, 5280 running watts |
| THD Rating | Less than 3% distortion |
| Inverter Technology | Fuel-efficient variable speed |
| Noise Level | 60 dBA at 25% load |
| Runtime | 17 hours at 25% load |
The Westinghouse iGen8200TFc combines inverter efficiency with home backup power capability. Less than 3% THD makes it completely safe for computers, phones, TVs, and medical equipment.
Inverter technology adjusts engine speed to match power demand, dramatically reducing fuel consumption and noise. At 60 dBA, it runs quieter than normal conversation, making it neighborhood-friendly during outages.
The 50A outlet provides true home backup capability despite the inverter design. Copper windings produce cleaner power while helping the unit run cooler and extend lifespan.
The compact 298cc engine delivers 17 hours of runtime at 25% load on just 3.9 gallons of gasoline. CO sensor and automatic low oil shutdown provide essential safety protection.
This premium inverter costs more but delivers superior fuel efficiency and whisper-quiet operation. It’s ideal for homeowners who refuse to compromise on electronics safety or noise levels.
Pros:
- Less than 3% THD for electronics
- Extremely quiet operation
- Fuel-efficient inverter technology
- 17-hour extended runtime
Cons:
- Lower natural gas wattage
- Highest price per watt
How to Choose Best Natural Gas Generators for Home
Power Output Requirements
Calculate your home’s essential power needs before selecting a generator. Add up the running watts of appliances you must keep operating during outages, then add 20% for startup surge.
Central air conditioning requires 3000-5000 watts, refrigerators need 700-1200 watts, and sump pumps use 1000-2000 watts. Larger homes with multiple high-wattage appliances need 9000+ running watts on natural gas.
Tri-Fuel Versatility
Tri-fuel capability provides critical flexibility during emergencies. Natural gas offers unlimited runtime when connected to your home’s gas line, but propane and gasoline options ensure backup if gas service is interrupted.
Natural gas typically produces 20-30% less power than gasoline due to lower energy density. Check the natural gas wattage specifications specifically, not just gasoline ratings, when sizing your generator.
Inverter vs Traditional Generators
Inverter generators produce cleaner power with less than 3% THD, making them safe for sensitive electronics. They also run quieter and more fuel-efficiently by adjusting engine speed to match demand.
Traditional open-frame generators cost less per watt and provide higher total power output. Choose inverter technology if you prioritize electronics safety and quiet operation, or traditional models for maximum backup power at lower cost.
Safety Features
Carbon monoxide shutdown is essential for any generator used near homes. CO sensors detect dangerous gas buildup and automatically shut down the engine before levels become life-threatening.
Low oil shutdown protects the engine from damage by stopping operation when lubrication drops too low. Transfer switch compatibility ensures safe connection to your home’s electrical system without backfeeding power to utility lines.
Runtime and Fuel Capacity
Larger fuel tanks reduce refueling frequency during extended outages. A 9.5-gallon tank typically provides 15-19 hours of runtime on gasoline at 50% load, while smaller 3.9-gallon tanks require more frequent fills.
Natural gas generators connected to home gas lines run indefinitely without refueling. This unlimited runtime makes natural gas ideal for areas prone to multi-day power outages from severe weather.
Frequently Asked Questions
Can I connect a natural gas generator directly to my home’s gas line?
Yes, but you must hire a licensed professional to install the connection. A qualified technician will install the proper quick-connect fitting and ensure compliance with local codes for safe operation.
How much natural gas does a home generator use per hour?
A 7500-watt generator typically consumes 150-200 cubic feet of natural gas per hour at 50% load. Your actual usage depends on the load you’re powering and your generator’s efficiency rating.
Do I need a transfer switch for a natural gas generator?
Yes, a transfer switch is legally required and essential for safety. It prevents backfeeding electricity into utility lines, which could electrocute utility workers or damage your generator and home electrical system.
Are tri-fuel generators less reliable than single-fuel models?
No, tri-fuel generators are equally reliable when properly maintained. The fuel switching mechanism adds minimal complexity while providing valuable flexibility during emergencies when one fuel type may be unavailable.
How loud are natural gas generators for home use?
Traditional portable generators run 65-75 dBA, similar to a vacuum cleaner. Inverter models operate much quieter at 55-65 dBA, comparable to normal conversation levels.
Final Thoughts
The Westinghouse 13500 Peak Watt Tri-Fuel offers the best balance of power, runtime, and value for most homes. For electronics-heavy households, the Westinghouse 8200 Inverter provides superior THD protection.
Choose your generator based on your home’s essential power needs on natural gas, not gasoline ratings. Always hire a licensed professional for natural gas line connections and transfer switch installation.
Tri-fuel capability gives you critical flexibility during extended emergencies when fuel availability becomes uncertain. Invest in proper sizing now to ensure reliable backup power when you need it most.