How Much Does It Cost To Install a Generator Transfer Switch? [2025 Data]

The cost to install a generator transfer switch often ranges from $1,200 to $1,600. Most homeowners spend an average of $1,450. Your overall cost will depend on whether you purchase an automatic or manual switch, as well as the size, location, labor fees, and other factors. Our guide breaks down the costs of installing a generator transfer switch.

Type of Generator Transfer Switch

An automatic generator switch is more expensive than a manual switch. Here’s how the costs compare:

• Automatic generator transfer switch cost: $600–$2,500

• Manual generator transfer switch cost: $400–$1,300

Automatic

You can expect to pay between $600 and $2,500 to install an automatic transfer switch. This type of switch seamlessly switches the power from the main breaker to the generator breaker during a power outage. It’s ideal for standby generators and homeowners living in storm-prone areas. 

Manual

You can expect to pay $400 to $1,300 to install a manual transfer switch. You’ll need to manually flip the switch from the main breaker to the generator breaker during an emergency. A manual transfer switch works best in areas that don’t experience many power outages and for portable generators. 

Size of Generator Transfer Switch

Depending on the size of your generator, you’ll need a transfer switch of the same capacity and ampacity to keep your home running during an emergency. Here’s how the cost is impacted by generator size in watts:

Labor Costs for Installing a Generator Transfer Switch

To install a generator transfer switch, you’ll need to hire a local electrician or a generator installer near you, and you can expect to pay between $50 and $100 per hour. An electrician should spend around two to four hours installing a generator transfer switch. The cost of a basic installation ranges from $200 to $500, while a more complex installation costs between $500 and $1,500.

Additional Cost Factors for Generator Transfer Switch Installation

Here are a few additional cost factors to consider when budgeting for your generator transfer switch. 

Amp Requirements

As the amp requirement increases, the cost of the generator transfer switch will also rise. That’s because higher-amperage switches use stronger parts and better materials to safely handle the extra electricity, which makes them more expensive to manufacture.

Number of Circuits

Multi-circuit transfer switches get more expensive as the number of circuits increases. That’s because more circuits mean more hardware and wiring inside the box, and they can also make installation more labor-intensive. For example, a six-circuit switch might start around $200, while a 16-circuit unit often costs $1,000 or more.

Existing Electrical 

To ensure your electrical panel is up to code, your electrician may need to upgrade your electrical panel or subpanel, or install new circuit breakers, before installing a generator transfer switch. Here’s what you might pay for each task:

Location

The location of the generator transfer switch will also affect the overall cost. For example, if a generator installation pro needs to access the attic, crawl space, or other hard-to-reach area, you can expect to pay more for installation costs. 

Permits

The average cost for a generator transfer switch permit is between $50 and $350. While obtaining a permit for a portable generator isn’t usually necessary, installing a whole-home generator requires a permit for electrical upgrades.

Maintenance

Depending on the complexity of your transfer switch, you’ll typically pay between $50 and $100 per hour for maintenance service. You'll need to perform regular generator maintenance to ensure your transfer switch is working correctly. Maintenance should be performed annually by a licensed electrical technician, including:

• Visual inspection

• Mechanical inspection

• Checking the voltage

• Checking the cables

• Checking for fire hazards

• Properly cleaning the transfer switch

• Manually testing the transfer switch 

• Conducting a pole-resistance test

• Inspecting electrical connections

• Performing tests for transfer delays

Why You Should Hire a Generator Transfer Switch Installation Pro

Hiring a local generator transfer switch installation pro may cost more upfront, but it ensures your system is installed safely and correctly. Transfer switches involve direct connections to your home’s electrical panel, and improper installation can lead to serious safety hazards, code violations, or damage to appliances. Professionals have the tools, training, and experience to install a transfer switch that works reliably during power outages.

Here’s why it’s ideal to hire a generator transfer switch installation pro

Installing a generator transfer switch is a specialized electrical project that requires technical knowledge and strict safety precautions. Here are some of the top reasons to work with a pro:

• Electricians can determine the correct transfer switch type and capacity for your generator and home.

• Pros ensure safe, code-compliant connections to your electrical panel and circuits.

• Working with a pro prevents dangerous backfeeding that can harm utility workers and your home.

• Professionals can identify electrical issues, such as outdated panels or overloaded circuits, before installation.

• Hiring a pro ensures reliable power distribution during outages and protects sensitive electronics.

If you want to DIY prep for a generator transfer switch installation

While installation should be handled by a licensed professional, some preparation can help reduce time and costs:

• Clear the area around the electrical panel and generator connection point.

• Make a list of essential circuits or appliances you want powered during outages.

• Ensure clear access to the generator location, panel, and wall space for installation.

• Note any existing electrical issues or recent upgrades to share with the electrician.

Tips to Reduce Cost While Installing a Generator Transfer Switch

Here are tips to help you reduce costs while installing a transfer switch:

• Calculate wattage: Figure out how much power you’ll need during an outage by calculating the wattage of your appliances and HVAC system. 

• Consult with a pro: Before purchasing a transfer switch, consult a licensed electrician who can help you determine your electrical load needs. 

• Get a warranty: Choose a brand that offers limited or extended warranties if you need to repair or replace your transfer switch.

• Get quotes: Get at least three quotes from licensed electricians in your area to compare prices and secure the best deal. 

Does a Generator Transfer Switch Increase Home Value?

A generator transfer switch is an essential safety feature for your whole-house generator and may even be required by local electrical codes, depending on the laws in your area. Either way, it will help you get the best ROI for your generator, which can add around 3% to 5% to your home’s value.

How Angi Gets Its Cost Data

Home is the most important place on earth, which is why Angi has helped more than 150 million homeowners transform their houses into homes they adore. To help homeowners with their next project, Angi provides readers with the most accurate cost data and upholds strict editorial standards. We survey real Angi customers about their project costs to develop the pricing data you see, so you can make the best decisions for you and your home. We pair this data with research from reputable sources, including the U.S. Bureau of Labor Statistics, academic journals, market studies, and interviews with industry experts—all to ensure our prices reflect real-world projects. 

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