10 Best Whole House Generators 2025 in the United States

The DuroMax XP13000E is a powerful portable generator offering 13,000 starting watts and 10,500 running watts, making it well-suited to power most household essentials during outages, including refrigerators, lights, and air conditioners. It runs on gasoline, which is easy to find and refuel, though it may require frequent refilling depending on usage since the 0.5-gallon tank capacity is relatively small compared to its high power output.

The generator includes multiple outlet types, including heavy-duty 240V options, which makes it flexible for whole-home use and compatible with transfer switches for automatic backup setups. Its 500cc engine with electric start simplifies operation, and features like low oil shutdown and a CO sensor add safety. While it weighs 236 pounds, it remains portable with foldable handles and wheels, although moving it frequently could be challenging.

Installation is straightforward for those with some electrical knowledge. This model is a solid choice for homeowners needing robust, reliable backup power that can handle heavy loads, but users should be prepared for regular fuel management and a fairly bulky unit.

The Generac 7210 24kW Air Cooled Guardian Series Home Standby Generator is designed to offer reliable power for residential use during outages. With a noteworthy power output of 24,000 watts, it ensures that even larger homes can stay powered, making it a strong candidate for whole-house protection. One of its standout features is the 200-amp automatic transfer switch, which ensures seamless power switching, allowing for uninterrupted service during outages. Additionally, the Smart Controls and Mobile Link Wi-Fi connectivity enable users to monitor the generator’s performance remotely, which is a big plus for peace of mind.

The generator operates on natural gas or LP gas, offering flexibility based on user preference. With Generac’s True Power Technology, the generator promises clean and stable power, minimizing the risk of damage to sensitive electronics. The 5-year limited warranty adds an extra layer of reassurance regarding the product's reliability and long-term performance.

Potential buyers should consider a few drawbacks. The generator's weight of 455 pounds could pose challenges during installation, which requires a certified electrician. Additionally, its size may not be suitable for all outdoor spaces, requiring ample installation area.

The Westinghouse 14500 Peak Watt Tri-Fuel Home Backup Portable Generator is a versatile option for those looking for a reliable backup power source for larger homes. One of its significant strengths is the tri-fuel capability, allowing it to run on gasoline, propane, or natural gas, which provides flexibility based on availability and cost of fuel. With a peak wattage of 14,500 watts on gasoline and a running wattage of 11,500 watts, it can handle substantial power loads.

The run time is also impressive, offering up to 19 hours on a full 9.5-gallon gasoline tank and up to 7 hours on a 20 lb. propane tank, ensuring long-lasting power during outages. The heavy-duty 550cc 4-stroke OHV engine is built for durability, featuring a cast iron sleeve for added longevity. This generator includes a remote electric start for convenience, and it is transfer switch ready, making it easier to connect to your home's electrical system in emergencies.

Additionally, it comes with features like overload protection, automatic voltage regulation, and a muffler for noise reduction. However, at 230 pounds, it is quite heavy and may require significant effort to move. Installation and setup may also be challenging due to its size and weight. Despite these drawbacks, it remains a highly rated product, indicating strong customer satisfaction. This generator is best suited for residential use, particularly for those needing a robust and flexible backup power solution.