Best Generators to Run the Whole House for Backup Power
Looking for a reliable generator that can power an entire home during outages? This guide compares five top dual‑fuel and standby options, explains who each is best for, and helps you choose based on power output, fuel type, and ease of use. Ideal buyers include homeowners seeking whole‑house backup, those needing transfer‑switch readiness, and users who want remote start or easy monitoring. The table below highlights core specs to help quick comparisons.
| Product | Fuel Type | Running Watts | Peek Watts | Best For |
|---|---|---|---|---|
| Westinghouse 12500 Watt Dual Fuel | Gas / Propane | 9500 (Gas) / 8500 (Propane) | 12500 (Gas) / 11200 (Propane) | Medium‑to‑large homes; transfer switch ready |
| DuroMax XP13000EH | Gas / Propane | 13,000 | 13,000 | Whole‑home backup; versatile dual fuel |
| Generac 24kW Whole Home | Gas / Propane | 24kW (standby) | 24kW | Large homes; cellular monitoring |
| Westinghouse 28000 Peak Watt | Gas | 20,000 | 28,000 | Very large homes; multiple outlets |
| Westinghouse 14500 Peak Watt Dual Fuel | Gas / Propane | 11,500 (Gas) / 10,500 (Propane) | 14,500 (Gas) / 13,500 (Propane) | Backup for larger homes; portable option |
Westinghouse 12500 Watt Dual Fuel Backup Generator
This dual‑fuel unit offers 9500 running watts on gasoline or 8500 on propane, with a peak of 12500 watts gasoline and 11200 propane. It features remote electric start with a key fob and a transfer switch ready configuration, plus an LCD readout (VFT) showing voltage, frequency, and lifetime hours. Best for homeowners who want an automatic transfer capability and a respectable balance of power, portability, and cost. A limitation is fuel efficiency under longer runtimes when carrying heavier loads.
Best for: Homeowners needing reliable backup power with a transfer switch option and remote start. Choose this if you want both gasoline and propane flexibility and a clear real‑time status display.
Caution: Gasoline run time can vary with load and fuel quality; ensure a compatible transfer switch is installed by a professional.
DuroMax XP13000EH 13,000‑Watt Dual Fuel
The XP13000EH delivers 13,000 watts of continuous power in both gasoline and propane modes, designed for whole‑home backup. DuroMax emphasizes robust dual‑fuel technology and a durable engine suitable for extended outages. This model is best for users who want strong, flexible power for larger homes and a generator that can be relied on in emergencies. It may be heavier and noisier than compact portable units.
Best for: Whole‑home backup with dual fuel versatility and a straightforward electric start. Choose this if you need substantial power and don’t mind extra size and weight.
Limitation: Not explicitly stated to include automatic transfer functionality; verify switch compatibility for your setup.
Generac 24kW Whole Home Generator
This model provides full home protection with an automatic 200 Amp transfer switch and cellular capability for remote monitoring via Mobile Link. It supports standby operation, reducing interruption by detecting outages and supplying power to essential systems automatically. It is best for larger homes or households seeking integrated monitoring and maintenance alerts. A potential consideration is the reliance on fuel availability and cellular service for remote control.
Best for: Large homes needing automatic, hands‑free power with remote monitoring. Choose this if you value cellular connectivity and automated outage detection.
Caution: Cellular monitoring requires a subscription and stable network access; plan for service continuity in remote areas.
Westinghouse 28000 Peak Watt Portable Generator
With 20,000 running watts and 28,000 peak watts, this model delivers heavy‑duty power for larger homes or job sites. Features include a remote start with a key fob, multiple outlet configurations including two 50A 120/240V, two 30A 120/240V, plus several 120V outlets. It has a long runtime on a sizable fuel tank and an idle control to save fuel. Best for: homes with high power needs or multi‑circuit loads. Better for: users who require a broad outlet setup. Caution: Its size and weight may reduce portability.
Best for: Very large homes and demanding loads needing multiple high‑amp outlets. Choose this if you expect sustained high power and are okay with a larger generator.
Westinghouse 14500 Peak Watt Dual Fuel
The 14500 peak watt dual fuel generator offers 11,500 running watts on gasoline and 10,500 running watts on propane, with 13,500 peak propane performance. It runs up to 19 hours on a 9.5 gallon tank and has a 20‑lb propane option. This model suits mid‑to‑large homes that require robust backup without stepping up to standby generators. It is portable enough to move if needed, but not as compact as smaller units. Caution: Dual fuel capability can introduce more maintenance considerations than single‑fuel models.
Best for: Portable yet powerful backup to cover large living spaces. Choose this if you need dual fuel flexibility with significant running watts without committing to a dedicated standby system.
Limitation: Not a full standby system; automatic transfer isn’t inherent and requires separate installation planning.
Buying Guide: Key Considerations For Whole‑House Backup Power
- Power needs: Calculate your essential circuits and total load to determine whether you need 10k–15k, 20k, or higher running watts.
- Fuel type and availability: Gasoline offers quick refuel options; propane can provide longer storage life. Dual‑fuel models add flexibility but may require more maintenance.
- Transfer switch readiness: If you want seamless generator operation during outages, look for models listed as transfer switch ready or compatible with external transfer switches.
- Remote start and monitoring: Remote electric start and cellular monitoring can simplify operation and maintenance, especially when you’re away from home.
- Safety features: CO sensors, low oil shutdown, rubber outlet covers, and automatic shutdown help protect equipment and your home.
- Portability vs. standby: Standby generators stay connected and auto‑start, but require installation. Portable dual‑fuel units offer flexibility with setup but require manual setup and fuel management during outages.
Frequently Asked Questions
- What is the difference between running watts and peak watts? Answer: Running watts measure continuous power, while peak watts represent the maximum surge the generator can handle for short bursts, such as starting appliances.
- Do I need a transfer switch for whole‑home backup? Answer: A transfer switch simplifies safe power transfer by isolating your home from the grid and connecting your generator to essential circuits.
- Is dual‑fuel better than single‑fuel? Answer: Dual‑fuel offers flexibility in fuel availability and storage, but may require more maintenance and investment.
- Can these generators power an entire two‑story home? Answer: Some models listed can, depending on total wattage requirements and utility load, but very large homes may need standby systems or higher‑capacity portable setups.
- What maintenance should I plan for? Answer: Regular oil checks, spark plug inspection, air filter cleaning, and fuel stabilizer use are common maintenance steps; follow manufacturer guidelines for intervals.
- Do these units include automatic operation? Answer: Some models offer automatic transfer and remote monitoring; others require manual switchovers and setups.