When it comes to ensuring that your home remains powered during an outage, a permanent generator is a smart investment. With a variety of models available, it can be difficult to decide which one is the best for your needs. In this guide, we’ll review the top permanent generators for home use, discuss their features, installation considerations, and what you need to know before making a purchase.
Why You Need a Permanent Generator for Your Home
Permanent generators, also known as standby generators, are designed to provide uninterrupted power during an outage. Unlike portable generators, these are installed directly into your home’s electrical system. This means they automatically turn on when the grid fails, ensuring you don’t have to worry about starting them manually.
Whether you live in an area with frequent power outages or want a backup system for your entire home, a permanent generator offers convenience and peace of mind. These systems can power critical appliances such as refrigerators, air conditioning units, medical devices, and more, all while being seamlessly integrated into your home.
How to Choose the Best Permanent Generator
Selecting the right permanent generator for your home requires considering several factors.
Here are the key points to keep in mind:
Power Output: Make sure the generator has enough wattage to power your home’s essential appliances. Residential generators typically range from 7,500 to 20,000 watts. You should calculate your home’s power needs before deciding.
Fuel Type: Permanent generators typically run on natural gas, propane, or diesel. Natural gas generators are the most common choice for home use due to their availability and low cost.
Noise Level: The quieter, the better. Look for models with a noise level of less than 65 decibels for comfort.
Installation and Maintenance: Professional installation is necessary for permanent generators. Check if the generator comes with a warranty and what kind of maintenance it requires.
Budget: Prices can vary significantly based on the size and features of the generator. On average, a good-quality permanent generator can cost between $3,000 and $10,000, including installation.
Top Permanent Generators for Your Home in 2025
Let’s take a look at some of the best permanent generators available for homeowners. These models have been selected based on performance, reliability, and value.
1. Generac Guardian Series 22 kW Standby Generator
Key Features:
Power Output: 22 kW, enough to power large homes with multiple appliances.
Fuel Type: Natural gas or propane.
Noise Level: 66 decibels.
Installation: Professional installation required.
Warranty: 5-year limited warranty.
The Generac Guardian Series is one of the most popular standby generators on the market. Known for its reliability and ease of use, this model can power all essential home appliances, including air conditioners, lights, and electronics. It comes with a transfer switch that automatically detects power loss and starts up the generator.
The 22 kW version is ideal for large homes or homes with high power demands. It operates quietly, ensuring that you won’t be disturbed during an outage. The 5-year warranty gives you added peace of mind.
2. Kohler 20RESCL Standby Generator
Key Features:
Power Output: 20 kW.
Fuel Type: Natural gas or propane.
Noise Level: 64 decibels.
Installation: Professional installation required.
Warranty: 5-year limited warranty.
Kohler is known for making durable and efficient generators, and the 20RESCL is no exception. With a 20 kW output, this generator is well-suited for medium to large homes. It features a quiet operation, making it ideal for neighborhoods where noise may be a concern. This model also comes with an automatic transfer switch, ensuring you have power when you need it the most.
3. Cummins RS20A Standby Generator
Key Features:
Power Output: 20 kW.
Fuel Type: Natural gas or propane.
Noise Level: 61 decibels.
Installation: Professional installation required.
Warranty: 5-year limited warranty.
Cummins is a leader in the generator industry, and the RS20A model offers excellent value for homeowners seeking a reliable power backup. The 20 kW capacity makes it ideal for running essential appliances and providing comfort during power outages. This generator operates at a low noise level, making it a great choice for residential areas.
4. Briggs & Stratton 12 kW Standby Generator
Key Features:
Power Output: 12 kW.
Fuel Type: Natural gas or propane.
Noise Level: 68 decibels.
Installation: Professional installation required.
Warranty: 5-year limited warranty.
For smaller homes or those with fewer power requirements, the Briggs & Stratton 12 kW standby generator is a great option. It offers sufficient power for most basic needs, including lighting, refrigerators, and small appliances. This generator is compact and easy to install, making it ideal for residential properties with limited space.
5. Honda EM5000SX Standby Generator
Key Features:
Power Output: 5,000 watts.
Fuel Type: Gasoline.
Noise Level: 63 decibels.
Installation: Requires external transfer switch (sold separately).
Warranty: 3-year warranty.
If you’re looking for a reliable backup generator for your home, the Honda EM5000SX is a top choice. Though it’s a bit smaller in terms of power output, it’s ideal for running a few critical appliances. It’s also one of the quieter generators available, making it a good option for use in residential areas.
Important Features to Look for in a Permanent Home Generator
When choosing a permanent generator, there are some specific features to look for that can make your experience smoother and more efficient:
1. Automatic Transfer Switch (ATS)
The ATS is an essential feature that allows the generator to turn on automatically when the power goes out. This eliminates the need for manual operation, making your backup power system more reliable and convenient.
2. Wi-Fi Connectivity
Many modern generators come with Wi-Fi capabilities, allowing you to monitor your generator’s status remotely via an app. This can help you track performance, check fuel levels, and even schedule maintenance from anywhere.
3. Fuel Efficiency
A fuel-efficient generator will save you money in the long run. Look for models that offer advanced fuel management systems to ensure optimal performance without excessive fuel consumption.
4. Quiet Operation
Noise can be a significant concern when it comes to generators, especially if you live in a residential area. Look for models with noise-reduction technologies that operate below 65 decibels, which is about the level of a normal conversation.
5. Durability and Warranty
A high-quality generator is built to last. Look for models with long warranties (at least 5 years) and reputable brands known for their reliability. The more durable the unit, the less likely you are to face repairs or replacements down the line.
Installation Considerations for Permanent Generators
Before installing your permanent generator, consider these important factors:
Location: Install your generator in a well-ventilated area, away from windows, doors, and air intakes. A concrete pad is ideal for ensuring stability and preventing flooding.
Fuel Supply: Ensure that your generator is connected to a reliable fuel supply. Natural gas is the most common choice, but some homes may opt for propane or diesel depending on availability and preference.
Local Codes: Make sure that your installation complies with local building and electrical codes. This may require a licensed electrician or contractor to handle the installation.
Permits: In some areas, permits are required to install a permanent generator. Check with your local authorities to ensure you have the necessary approvals.
Maintenance Tips for Your Permanent Generator
A permanent generator requires routine maintenance to ensure it continues to run smoothly.
Here are some general maintenance tips:
Change the Oil: Regular oil changes help keep the engine running efficiently.
Test the Generator: Run your generator monthly to ensure it’s in working order.
Replace the Air Filter: A clean air filter improves efficiency and prolongs the life of your generator.
Check the Battery: Inspect the battery and replace it if necessary.
Professional Servicing: Schedule annual servicing with a professional technician to keep your generator in top shape.
Conclusion
Choosing the best permanent generator for your home depends on factors such as power needs, fuel type, budget, and installation requirements. The Generac Guardian Series, Kohler 20RESCL, and Cummins RS20A are all excellent choices for homeowners who want reliable, efficient power backup during an outage. By keeping your needs in mind and considering the features outlined in this guide, you can ensure that your home is always ready for anything.
Whether you’re looking to power a small cabin or a large home, a permanent generator is an investment that will pay off in convenience, security, and peace of mind for years to come.
