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 DuroMax XP15000HX 15,000-Watt Dual Fuel Portable Generator is a robust option for ensuring your whole house stays powered during outages. With a significant 15,000-watt output, it can handle extensive power needs, making it ideal for large homes or even commercial use. The dual fuel capability allows you to use either gasoline or propane, giving you flexibility based on availability and cost efficiency. Propane, in particular, is a cleaner and longer-lasting fuel option, which can be beneficial for maintenance and storage.

The generator includes an automatic transfer switch-ready outlet, making it convenient for seamless integration into your home's power system during an outage. The CO Alert feature is a critical safety addition, shutting down the generator if it detects harmful carbon monoxide levels. This adds a layer of safety for your household that can't be overlooked. The multiple outlets and a digital display that shows voltage, frequency, and maintenance schedules make the generator versatile and user-friendly.

There is also a push-button start and remote control for easy operation. However, the generator is quite heavy at 345 pounds, which may be cumbersome for some users despite its portability features like wheels and handles. Additionally, it operates at a noise level that might be noticeable, though this is typical for generators of this capacity. The large size and weight mean installation might require some effort and space planning. With a 5-year warranty, it offers reassurance of longevity and reliability.

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.