10 Best Whole House Generators 2026 in the United States

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 Generac Guardian 26kW Home Standby Generator is a strong choice for homeowners looking to power an entire house during outages. With a solid power output of 26,000 watts, it can handle most household appliances and systems easily. It runs on natural gas or propane, which are common and convenient fuel options for standby generators. The included 200 Amp automatic transfer switch ensures your home switches over to generator power automatically and safely without manual effort.

One highlight is the WiFi-enabled remote monitoring, allowing you to check status and receive maintenance alerts from anywhere, adding convenience and peace of mind. The generator is housed in a durable aluminum casing that’s built for outdoor use and designed to run quietly, which is helpful if noise is a concern in your neighborhood. Installation requires a licensed electrician, which is typical for whole-house units but adds to initial setup cost and complexity.

Weighing 518 pounds and measuring about 4 feet long, it’s a sizable unit but fairly compact for the power it delivers. Backed by a 5-year warranty and supported by Generac’s reputation, this generator delivers reliable, low-maintenance performance for whole-house backup. For those seeking consistent, automatic power and remote monitoring with a well-regarded brand, this model is a suitable fit, though professional installation is recommended.

The Generac Guardian 10kW Home Standby Generator offers a solid 10,000 watts of clean and stable power, enough to keep most homes running smoothly during outages. It runs on natural gas or propane, which are common and convenient fuel options that allow for continuous power without frequent refueling. This model comes with a 100 Amp automatic transfer switch that seamlessly switches your home’s power to the generator when the main supply goes out, ensuring your home stays powered without manual effort.

The generator is designed with a durable aluminum enclosure and uses a quiet air-cooled G-Force engine, meaning it won’t be too noisy while running and can handle regular use with less maintenance. Another handy feature is the Wi-Fi connectivity, allowing you to monitor the generator’s status from anywhere using your phone – a helpful tool to stay informed about outages or maintenance needs. It’s a bit on the heavier and larger side, so professional installation by a licensed electrician is recommended to ensure it’s set up safely and correctly. The sturdy build and 5-year limited warranty give reassurance that it’s built to last.

If you are looking for a reliable, whole-house backup generator that balances power, quiet operation, and smart features, this model is a strong choice. Just keep in mind the size and weight will require careful planning for installation space.