5 Best Portable Generators for Whole House Backup Power
The best portable generators for whole house backup depends on your needs. The Westinghouse 14500 Peak Watt Tri-Fuel is best for maximum power output and fuel flexibility with natural gas capability, while the DuroMax XP13000EH excels at providing robust whole-home backup at an affordable price point. For budget-conscious homeowners needing reliable tri-fuel operation, the Westinghouse 12500 Peak Watt Tri-Fuel stands out with excellent runtime and versatile fuel options.
Choosing the right whole house generator means balancing power output, fuel flexibility, and runtime. These portable generators offer transfer switch compatibility, making them ideal for emergency backup power during storms and outages.
Quick Comparison Table
| Product | Peak Watts (Gas) | Running Watts (Gas) | Fuel Options | Runtime (Gas) | Tank Size | Engine Size |
|---|---|---|---|---|---|---|
| Westinghouse 14500 Tri-Fuel | 14,500W | 11,500W | Gas, Propane, Natural Gas | 19 hours | 9.5 gallons | 550cc |
| DuroMax XP13000EH | 13,000W | 10,500W | Gas, Propane | N/A | N/A | N/A |
| Westinghouse 12500 Tri-Fuel | 12,500W | 9,500W | Gas, Propane, Natural Gas | 12 hours | 6.6 gallons | 457cc |
| Westinghouse 13500 Tri-Fuel | 13,500W | 10,500W | Gas, Propane, Natural Gas | 19 hours | 9.5 gallons | 500cc |
| Westinghouse 12500 Dual Fuel | 12,500W | 9,500W | Gas, Propane | 12 hours | 6.6 gallons | 457cc |
Best Portable Generators for Whole House
1. Westinghouse 14500 Peak Watt Tri-Fuel – Maximum Power Champion
Best for: Large homes requiring the highest power output with natural gas hookup capability.
Key Features:
| Feature | Details |
| Peak Power | 14,500 watts on gasoline |
| Fuel Options | Gas, propane, natural gas |
| Runtime | Up to 19 hours |
| Engine | 550cc cast iron sleeve |
| Starting | Remote, electric, recoil start |
The Westinghouse 14500 Tri-Fuel is the best whole house generator for homeowners seeking maximum power capacity. With 14,500 peak watts on gasoline, it delivers enough power to run multiple large appliances simultaneously.
The heavy-duty 550cc engine features a durable cast iron sleeve for long-lasting performance. Low THD technology protects sensitive electronics like computers and TVs during operation.
Tri-fuel capability gives you three fuel options: gasoline, propane, or natural gas hookup. The 9.5-gallon tank provides up to 19 hours of runtime on a single fill.
Remote start with included key fob makes operation convenient during emergencies. The transfer switch-ready outlet simplifies whole house integration.
This premium generator combines maximum power output with fuel flexibility, making it ideal for larger homes with higher electrical demands.
Pros:
- Highest power output at 14,500 watts
- Natural gas hookup capability
- 19-hour runtime on gasoline
- Remote start convenience
Cons:
- Highest price point at $1,499
- Heavier due to larger engine
2. DuroMax XP13000EH – Best Value Dual Fuel
Best for: Budget-conscious homeowners wanting powerful dual fuel capability with all-metal construction.
Key Features:
| Feature | Details |
| Peak Power | 13,000 watts total output |
| Fuel Options | Gasoline and propane |
| Construction | All-metal frame and panel |
| Starting | Push button electric start |
| Outlets | 50A transfer switch ready |
The DuroMax XP13000EH is the best value portable generator for whole house backup power. At just $999, it delivers 13,000 watts of power with dual fuel flexibility.
The heavy-duty all-metal frame and power panel eliminate plastic components for superior durability. DuroMax’s robust engine design provides reliable performance during extended outages.
Push button electric start makes operation effortless, while the front-facing fuel selector lets you switch between gas and propane in seconds. The 50-amp outlet connects directly to transfer switches.
This generator combines professional-grade construction with affordable pricing. It’s powerful enough to run essential appliances without the premium price tag.
For homeowners seeking reliable whole house backup on a budget, the DuroMax delivers exceptional value and performance.
Pros:
- Excellent price at $999
- All-metal construction durability
- 13,000 watts ample power
- Easy fuel switching
Cons:
- No natural gas option
- Runtime specs not specified
3. Westinghouse 12500 Peak Watt Tri-Fuel – Best Budget Tri-Fuel
Best for: Homeowners wanting tri-fuel flexibility including natural gas at the most affordable price.
Key Features:
| Feature | Details |
| Peak Power | 12,500 watts on gasoline |
| Fuel Options | Gas, propane, natural gas |
| Runtime | 12 hours on gasoline |
| Engine | 457cc cast iron sleeve |
| Safety | CO shutdown protection |
The Westinghouse 12500 Tri-Fuel is the best budget-friendly tri-fuel generator for whole house backup. At $861.75, it offers natural gas capability at an unbeatable price.
The 457cc engine with cast iron sleeve delivers reliable 12,500 peak watts on gasoline. Tri-fuel capability provides maximum fuel flexibility for any emergency situation.
Remote start with key fob, electric start, and recoil backup ensure you can always get power when needed. The 6.6-gallon tank provides 12 hours of continuous runtime.
Carbon monoxide shutdown and automatic low oil protection keep your family safe. The transfer switch-ready outlet simplifies professional installation.
This generator offers premium tri-fuel features at a mid-range price, making it perfect for budget-conscious homeowners.
Pros:
- Lowest price tri-fuel option
- Natural gas hookup included
- CO safety shutdown
- 12-hour runtime capability
Cons:
- Lower peak watts than competitors
- Smaller fuel tank capacity
4. Westinghouse 13500 Peak Watt Tri-Fuel – Best Overall Balance
Best for: Homeowners seeking the perfect balance of power, runtime, and tri-fuel versatility.
Key Features:
| Feature | Details |
| Peak Power | 13,500 watts on gasoline |
| Fuel Options | Gas, propane, natural gas |
| Runtime | 19 hours maximum duration |
| Engine | 500cc cast iron sleeve |
| Tank | 9.5-gallon fuel capacity |
The Westinghouse 13500 Tri-Fuel is the best overall portable generator for whole house backup. It balances 13,500 peak watts with exceptional 19-hour runtime.
The robust 500cc engine delivers 10,500 running watts on gasoline, enough for most whole house applications. Tri-fuel capability provides ultimate flexibility for any fuel availability situation.
The large 9.5-gallon tank enables up to 19 hours of continuous operation on a single fill. Remote start, electric start, and recoil backup provide multiple starting options.
CO shutdown and low oil protection ensure safe operation. GFCI-protected outlets and rubber covers provide weather-resistant power distribution.
This mid-priced generator offers premium features and performance, making it the sweet spot for most homeowners.
Pros:
- Excellent 19-hour runtime
- Strong 13,500 peak watts
- Large 9.5-gallon tank
- Complete tri-fuel capability
Cons:
- Mid-high price at $1,249
- Less power than 14500 model
5. Westinghouse 12500 Watt Dual Fuel – Best Dual Fuel Value
Best for: Homeowners wanting Westinghouse quality in a dual fuel configuration with VFT display.
Key Features:
| Feature | Details |
| Peak Power | 12,500 watts on gasoline |
| Fuel Options | Gasoline and propane |
| Display | VFT voltage frequency tracking |
| Runtime | 12 hours on gasoline |
| Engine | 457cc cast iron sleeve |
The Westinghouse 12500 Dual Fuel is the best dual fuel generator for homeowners who don’t need natural gas. At $969, it offers Westinghouse quality at DuroMax pricing.
The 457cc engine delivers reliable 9,500 running watts with 12,500 peak capacity. The VFT display provides real-time voltage, frequency, and lifetime hour tracking.
Dual fuel operation lets you choose between gasoline and propane based on availability and cost. The 6.6-gallon tank provides 12 hours of runtime.
Remote start with key fob, electric start, and recoil backup ensure reliable starting. Transfer switch-ready and RV outlets provide versatile connectivity.
This generator offers Westinghouse’s proven reliability and features without the natural gas premium, perfect for propane and gas users.
Pros:
- Competitive $969 pricing
- VFT display tracking
- Westinghouse quality build
- 12-hour runtime capacity
Cons:
- No natural gas option
- Lower watts than tri-fuel models
How to Choose Best Portable Generators for Whole House
Power Output Requirements
Calculate your home’s total wattage needs before buying a generator. Add up the running watts of essential appliances like refrigerators, furnaces, well pumps, and lights.
Most whole house applications need 9,000-12,000 running watts minimum. Larger homes with central air conditioning may require 13,000-15,000 watts for comfortable operation.
Fuel Type Flexibility
Tri-fuel generators offer maximum flexibility by running on gasoline, propane, or natural gas. This versatility ensures you can always find available fuel during extended emergencies.
Natural gas hookup capability is ideal if you have existing gas lines. Propane stores longer than gasoline and produces cleaner emissions during operation.
Runtime and Tank Capacity
Longer runtime means fewer refueling interruptions during power outages. Look for generators offering 12-19 hours of operation on a single tank.
Larger fuel tanks (9-10 gallons) provide extended runtime but add weight. Balance tank size with portability needs based on your installation location.
Starting and Safety Features
Remote electric start provides convenience during emergencies, especially in bad weather. Backup recoil starting ensures you can always get power when batteries fail.
CO shutdown protection automatically turns off the generator if dangerous carbon monoxide levels build up. Low oil shutdown prevents engine damage from insufficient lubrication.
Transfer Switch Compatibility
Transfer switch-ready outlets (typically 30A or 50A) allow professional installation for whole house backup. This setup safely disconnects utility power and connects generator power.
Verify your generator includes the proper outlet configuration for your transfer switch. Professional installation ensures code compliance and safe operation during power outages.
Frequently Asked Questions
What size generator do I need to power my whole house?
Most homes need 9,000-15,000 running watts depending on size and appliances. Calculate your essential appliance wattage and add 20% buffer for starting surges.
Can I run a portable generator continuously during long outages?
Yes, but you must refuel and perform oil checks regularly. Most portable generators run 12-19 hours per tank and need oil changes every 50-100 hours of operation.
Is tri-fuel better than dual fuel for home backup?
Tri-fuel offers more flexibility with natural gas hookup capability for unlimited runtime. Dual fuel is sufficient if you only plan to use gasoline and propane.
Do I need a professional to install a whole house generator?
Professional installation is strongly recommended for transfer switch setup and electrical safety. Licensed electricians ensure code compliance and proper grounding for safe operation.
How loud are these whole house portable generators?
Most operate at 70-75 decibels at 50% load, similar to a vacuum cleaner. Place generators at least 20 feet from living areas to minimize noise disturbance.
Final Thoughts
The Westinghouse 13500 Tri-Fuel offers the best overall balance of power, runtime, and fuel flexibility for most whole house applications.
Focus on matching generator wattage to your essential appliance needs, and prioritize tri-fuel capability if you have natural gas access. Remote start and CO shutdown are essential safety features worth the investment.
Choose based on your specific power requirements and budget, knowing all these generators provide reliable whole house backup during emergencies.