10 Best Gen Generators 2026 in the United States

The Generac 28kW Home Standby Generator is designed to provide reliable whole-house backup power during outages. Its powerful 28,000-watt output is suitable for running essential home systems like heating, cooling, refrigeration, and lighting, making it a solid choice for homeowners wanting comprehensive protection. It uses fuel power and features electronic fuel and ignition controls that help optimize fuel efficiency, potentially lowering running costs and emissions compared to other generators. The generator starts automatically when it detects a power outage, so you won’t have to worry about manual intervention.

One standout feature is built-in cellular connectivity, allowing remote monitoring and control via a smartphone app. This can provide peace of mind by sending real-time updates and maintenance alerts, although it requires a paid subscription for full functionality. The generator also includes oil level sensors and is designed for improved cold start performance, which is helpful in colder climates.

This model is quite heavy at over 500 pounds and is intended for stationary home installation rather than being moved around. While specific noise level information isn’t provided, whole-house standby generators typically produce moderate noise that may require thoughtful placement. The unit comes with a 5-year limited warranty and 24/7 customer support, which adds to long-term reliability and service confidence. It has a fully enclosed design with automatic voltage regulation and low oil shutdown, enhancing safety and durability. This generator is ideal for homeowners seeking a robust, automated backup system with smart monitoring features and excels at providing continuous, efficient power during outages.

The Generac 24kW Home Standby Generator is designed to keep your entire home powered during outages, making it well-suited for homeowners seeking reliable backup power. With a strong power output of 24,000 watts, it can handle large household energy needs, including heating, cooling, and appliances. It runs on fuel and features electronic ignition for easy, automatic starts when the power goes out. The built-in 200 amp transfer switch helps safely switch power between the generator and utility supply.

This model is notable for its built-in cellular connectivity, allowing you to monitor performance remotely via an app, which adds convenience and peace of mind. Fuel efficiency and low emission technology help reduce running costs and environmental impact. It also comes with helpful safety features like oil level sensors and low oil shutdown to protect the engine. However, this unit is heavy at 461 pounds and designed primarily as a permanent home installation—not portable for other uses.

Its robust design, automatic operation, and whole-house capacity make it a solid choice for people wanting dependable, hands-off backup power, though prospective buyers should consider installation requirements before purchase.

The Generac Guardian 22kW Home Standby Generator is designed primarily for homeowners needing reliable, automatic backup power during storms or outages. With a powerful 22,000-watt output, it can comfortably handle whole-house electrical loads, making it a strong choice if you want to keep all essentials running without interruption. It runs on natural gas or liquid propane, which provides flexibility depending on your fuel availability. The generator features an electronic start system and automatic transfer switch, so it kicks on by itself when the power goes out, giving you hassle-free, continuous power.

One of its standout features is the built-in Wi-Fi connectivity, allowing you to monitor the generator remotely and receive maintenance alerts, ensuring peace of mind even if you’re away from home. The engine is designed to be low maintenance and fuel-efficient, running quieter than many other models of similar power. Its robust aluminum enclosure protects it for outdoor use, and the 200 Amp transfer switch is suitable for most residential electrical panels.

Weighing 466 pounds and measuring 50" x 27" x 29", it is intended for permanent installation, which typically requires a professional electrician. Though the noise level isn’t explicitly stated, it is known to run relatively quietly for a standby generator of this size. The 5-year limited warranty adds confidence in its durability. Installation costs can be significant since it must be done by a licensed electrician, and this generator is not designed for portable use or smaller power needs. Given its size and price, it is best suited for full-home backup rather than occasional or light-duty use. For homeowners focused on preparedness, the Generac Guardian 22kW offers dependable, automatic whole-house power with smart monitoring and dual-fuel capability.