10 Best Whole House Generators 2026 in the United States

The Generac 28kW Home Standby Generator is a robust solution designed to power an entire home during outages, delivering 28,000 watts of electricity which is ample for most household needs. It runs on fuel and includes a 200 amp automatic transfer switch (ATS) that automatically shifts your home’s power source to the generator when an outage occurs, so you don’t have to lift a finger. This model features built-in cellular connectivity, allowing you to monitor and control it remotely through a smartphone app, which adds convenience and peace of mind. It also comes with a smart thermostat, helping to keep your home comfortable while the generator runs. The generator’s design includes features for reliable starting even in cold weather, and it has sensors to monitor oil levels to maintain optimal function. The unit is relatively compact for its power, but at 524 pounds, professional installation is recommended.

The generator is fuel-efficient with electronic ignition and fuel control, which can help reduce running costs and emissions. Its durable, fully enclosed design helps protect it from weather and debris. A strong 5-year warranty and 24/7 customer support back the product, adding confidence in long-term use. This model is a comprehensive, high-power option well-suited for those needing reliable whole-house backup power.

The Generac 26kW Home Standby Generator is designed to provide reliable power backup for an entire home, making it a strong choice for anyone wanting to avoid disruption during outages. With 26,000 watts of running power and a 200 amp automatic transfer switch, it can handle most household electrical needs including refrigeration, heating, cooling, and lighting. It runs on fuel and features smart electronic controls to optimize fuel use, which helps save money and reduce emissions compared to some other models.

The generator also includes built-in cellular connectivity, allowing you to monitor and control it remotely via an app, which adds convenience and peace of mind. It has a fully enclosed design to protect it from weather and operates quietly enough for residential areas. At 524 pounds and measuring about 46 by 26 by 31 inches, installation should be planned with space in mind, but it comes with the transfer switch included, simplifying setup.

One drawback might be the need for a premium subscription to access remote monitoring features, and although noise levels are reasonable, like all generators it will still produce some sound when running. The product comes with a 5-year warranty and 24/7 customer support, providing confidence for long-term use. This generator is well suited for homeowners looking for dependable, automatic whole-house backup power with modern monitoring features.

The Generac 22kW Home Standby Generator is designed to keep your entire home powered during outages, handling everything from refrigeration to heating and lighting with its robust 22,000-watt output. It comes with a 200 amp automatic transfer switch that automatically turns the generator on when the power goes out, ensuring a smooth and quick switch to backup power without any manual effort. The generator runs on fuel, commonly natural gas or propane, and its electronic ignition and fuel controls optimize fuel use, making it more cost-efficient and environmentally friendly compared to other models.

A key feature is the built-in cellular connectivity that lets you monitor and control the generator remotely through a mobile app, providing peace of mind whether you are home or away. This feature requires a subscription but adds significant convenience for staying updated on the generator’s status. The design includes measures to improve reliability in cold weather, such as oil level sensors and a sloped roof to prevent ice buildup. The unit is solid and durable, weighing 451 pounds and constructed from aluminum and steel, which necessitates professional installation and placement outdoors in a dedicated spot. Fully enclosed designs typically help reduce sound, though specific noise levels are not mentioned.

The generator comes with a 5-year warranty and 24/7 customer support, enhancing long-term confidence in the product. Installation is not a simple DIY job due to its size and weight, and the premium app service adds extra cost. This generator is ideal for homeowners seeking a reliable, whole-house backup power solution with smart features, especially when convenience and fuel efficiency are key priorities.