Best Natural Gas Power Generators for Home Backup and Portable Power
Natural gas power generators offer reliable backup energy with flexible fuel options for homes and job sites. This guide highlights five tri-fuel models that can run on gasoline, propane, or natural gas, and are suitable for different household sizes and use cases. Best for larger homes needing long runtime, or for homeowners seeking fuel flexibility during outages, these picks balance power, convenience, and safety features.
Overview at a glance:
| Product | Peak Watts | Fuel Options | Best For |
|---|---|---|---|
| Westinghouse 14500 Peak Watt Tri-Fuel | 14,500 | Gasoline, Propane, Natural Gas | Large homes, extended outages |
| DuroStar DS13000MXT | 13,000 | Gasoline, Propane, Natural Gas | Whole-home backup, transfer-switch ready |
| Westinghouse 13500 Peak Watt Tri-Fuel | 13,500 | Gasoline, Propane, Natural Gas | Mid-size homes, portable backup |
| Westinghouse 12500 Peak Watt Tri-Fuel | 12,500 | Gasoline, Propane, Natural Gas | Compact yet capable backup |
| Generac 12,500 Starting Watt Tri-Fuel | 12,500 | Gasoline, Propane, Natural Gas | Emergency power with COsense |
Westinghouse 14500 Peak Watt Tri-Fuel Generator
Key features: 14,500 peak watts on gasoline; 13,500 peak watts on propane; 12,000 peak watts on natural gas. Running watts scale with fuel: 11,500 (gas), 10,500 (propane), 9,500 (natural gas). Powered by a heavy duty 550cc four-stroke OHV engine with a cast iron sleeve. Runtime up to 19 hours on a full 9.5-gallon tank; up to 7 hours on a 20-pound propane tank. Remote electric start and transfer switch readiness support easy operation during outages.
Best for: large homes or properties needing substantial peak power and long run times. Choose this if your fuel source may vary and you want a high-wattage tri-fuel option with remote start. Caution: heavier unit; ensure proper lifting and setup space.
DuroStar DS13000MXT Tri Fuel Portable Generator
Key features: 13,000 watts total, tri-fuel capability (gas, propane, natural gas). Remote electric start for quick power restoration. Transfer switch ready and designed for whole-home backup, with a CO Alert for safety. The user-friendly fuel selector and power panel simplify operation during emergencies.
Best for: homeowners who want a flexible tri-fuel option with straightforward operation and a ready-for-transfer-switch setup. Better for households seeking a balance of power and modularity. Caution: ensure proper ventilation and outdoor clearance due to emissions.
Westinghouse 13500 Peak Watt Tri-Fuel Generator
Key features: 13,500 peak watts (gas), 12,500 (propane), 10,000 (natural gas). Remote start with key fob, electric or recoil options. Runtime up to 19 hours on a 9.5-gallon tank with fuel gauge. It includes multiple outlets: two 120V GFCI, transfer switch-ready outlets, and RV-ready options with rubber outlet covers. Engine: 500cc Westinghouse OHV with cast-iron sleeve and digital hour meter.
Best for: mid-size homes needing reliable tri-fuel power with ample outlets and safety features. Choose this if you want comprehensive outlet coverage and a robust start system. Caution: ensure the weight and footprint fit your outdoor space.
Westinghouse 12500 Peak Watt Tri-Fuel Generator
Key features: 12,500 peak watts (gasoline), 11,200 (propane), 9,500 (natural gas). Remote start with key fob plus electric and recoil options. Runtime up to 12 hours on a 6.6-gallon tank with fuel gauge. Outlets include GFCI 120V duplex, transfer switch-ready 120V, and RV-ready 120/240V. Engine: 457cc Westinghouse OHV with cast iron sleeve and digital hour meter.
Best for: users needing a compact tri-fuel backup that still delivers solid power. Good for smaller homes or cabins with varied fuel access. Caution: shorter runtime on gasoline compared to larger tanks; plan for refueling if outages are extended.
Generac 12,500 Starting Watt Tri-Fuel
Key features: 9,500 running watts and 12,500 starting watts. Tri-fuel capability with a simple fuel selector. COsense carbon monoxide detection for safety, and electric start with a rechargeable battery for quick activation. Runtime up to 9.5 hours at 50% load on a large, steel fuel tank.
Best for: buyers prioritizing safety features and easy electric start for emergency power. Choose this if CO detection and reliable starting are critical. Caution: CO sensor requires battery maintenance to ensure continued operation.
Buying Guide: Key Considerations For Tri-Fuel Generators
- Power needs: Assess peak vs running watts to ensure the unit covers essential appliances and electronics during outages.
- Fuel flexibility: Tri-fuel models offer gasoline, propane, and natural gas. Consider fuel availability and refill logistics for your location.
- Startup and operation: Remote start, electric start, and user-friendly panels reduce setup time during emergencies.
- Run time and fuel capacity: Larger tanks extend runtime but increase weight. Match tank size to typical outage durations in your area.
- Safety features: CO sensors, low-oil shutdown, and mufflers reduce risk and noise during operation.
- Outlets and transfer readiness: Ensure the generator has the right mix of 120V, 240V, and RV outlets, and is transfer-switch ready for a seamless home connection.
- Portability vs. stationary use: Large units provide more power but require space and proper handling equipment. Consider a dedicated, stable outdoor setup.
- Maintenance: Look for engines with cast-iron sleeves and durable components that offer long-term reliability in variable climates.
What To Compare Across Models
- Peak watts vs running watts for the intended load
- Fuel type and availability in your region
- Starting method and ease of use
- Runtime per fuel type and overall fuel efficiency
- Outlet configuration and transfer-switch compatibility
Common Questions
- What is tri-fuel capability? – The ability to run on gasoline, propane, or natural gas, offering flexibility during outages.
- Is natural gas enough for whole-home backup? – It can be reliable for essential circuits, but verify your home’s load requirements and the generator’s capacity.
- Do these units require professional installation? – Transfer switch installation should be performed by a qualified electrician for safety and code compliance.
- How important is CO detection? – CO sensors add a critical safety layer, especially in portable setups where ventilation varies.
- What maintenance is needed? – Regular oil checks, air filter cleaning, and battery upkeep for electric-start models are typical.
- Can I parallel two generators? – Some models are described as parallel-capable, allowing increased power when used together with compatible kits.