Cost To Install Generator Transfer Switch

Are you considering the cost to install generator transfer switch? Discover the importance of this device and its benefits, as well as factors influencing the cost.

Learn about the different types of transfer switches and where to buy them. Get valuable insights on obtaining accurate cost estimates and make an informed decision for uninterrupted power supply during outages.

Importance of a generator transfer switch

In today’s modern world, where electricity is a vital part of our daily lives, power outages can be highly inconvenient and disruptive.

Whether it’s due to severe weather conditions, utility failures, or other unforeseen circumstances, losing electricity can lead to discomfort, spoiled food, disrupted work, and potential safety hazards.

This is where a generator transfer switch comes into play.

A generator transfer switch is a crucial component of a backup power system. It allows you to safely and conveniently switch between the main power supply and a backup generator during an outage.

By installing a transfer switch, you can effectively and automatically restore power to essential circuits or even your entire home or business, ensuring uninterrupted power supply when you need it most.

Purpose of the article

The purpose of this article is to provide valuable information about the cost of installing a generator transfer switch in the United States.

Understanding the factors that influence the cost and having a general idea of the average expenses involved can help homeowners and businesses make informed decisions and budget accordingly.

What is a generator transfer switch?

A generator transfer switch is an electrical device that acts as a bridge between the main power supply and a backup generator.

Its primary function is to safely and effectively transfer the power source from the utility grid to the generator, and vice versa, during power outages.

The transfer switch ensures that power is not fed back into the utility lines, protecting utility workers from potential electrocution and preventing damage to the generator.

It also eliminates the need for manually unplugging devices from utility power and plugging them into the generator, providing a seamless transition and convenience during power disruptions.

Types of transfer switches

There are two main types of generator transfer switches: manual transfer switches (MTS) and automatic transfer switches (ATS).

Manual transfer switch (MTS):
A manual transfer switch requires the user to manually operate the switch to transfer the power source from the utility grid to the generator.

This type of switch is typically less expensive than automatic transfer switches but requires human intervention to initiate the power transfer.

Automatic transfer switch (ATS):
An automatic transfer switch is designed to detect power loss and automatically transfer the electrical load to the backup generator.

It eliminates the need for manual intervention, providing a seamless transition and restoring power within seconds of an outage.

Automatic transfer switches are more convenient but generally cost more than manual transfer switches.

Benefits of installing a generator transfer switch

There are several benefits of installing a generator transfer switch. These are listed below.

Safety and convenience

Installing a generator transfer switch ensures the safety of both homeowners and utility workers. It prevents the backflow of electricity into the utility lines, protecting workers who may be making repairs during an outage.

It also eliminates the risk of improper power connections and potential electrical hazards.

Moreover, a transfer switch offers convenience during power outages. Instead of manually connecting devices to the generator, a transfer switch enables an automatic and swift transition from utility power to generator power, ensuring uninterrupted electricity supply to essential circuits or the entire property.

Protection of electrical appliances

Power outages can damage sensitive electrical appliances and devices when power is abruptly restored. With a transfer switch, the transition from utility power to generator power is controlled and smooth, preventing power surges that could harm appliances like refrigerators, computers, or HVAC systems.

By safeguarding these devices, a transfer switch helps avoid costly repairs or replacements.

Ensuring uninterrupted power supply

A generator transfer switch guarantees a continuous power supply during outages, which is especially crucial for critical systems or businesses that rely heavily on electricity.

Whether it’s maintaining essential medical equipment, preserving perishable goods, or keeping operations running smoothly, a transfer switch provides peace of mind and minimizes downtime.

By seamlessly switching between the main power supply and backup generator, a transfer switch ensures that power is restored quickly and efficiently, reducing disruptions and allowing you to carry on with your daily activities without significant interruptions.

Factors influencing the cost of installing a generator transfer switch

There are several factors that influences the cost of installing a generator switch. These factors are presented below.

Type of transfer switch

The type of transfer switch you choose will impact the overall cost. Manual transfer switches tend to be less expensive than automatic transfer switches.

A manual transfer switch costs less and takes less time to install than an automatic transfer switch, reducing both labor and material costs.

However, the convenience and automation provided by an automatic transfer switch may outweigh the cost difference for many homeowners and businesses.

Kit vs. individual parts

Transfer switch kits cost $300 to $500 on average and are available for many smaller amperage models. Purchasing a kit that includes the switch panel, power inlet box, and power cord may reduce the total material cost.

Power capacity and size

The power capacity and size of the transfer switch are determined by the electrical load you intend to connect to the backup generator.

Larger transfer switches capable of handling higher electrical loads will generally cost more than smaller ones.

Amp requirements

Higher amp transfer switches typically cost more than lower amp models. The transfer switch’s amperage should match the main panel or the generator’s amperage.

Number of circuits

A 6-circuit transfer switch is cheaper than a 10-circuit transfer switch but provides fewer connections to the main breaker panel.

Installation location

The installation location of the transfer switch can affect the cost. If the switch needs to be installed in a hard-to-reach area or if significant modifications to the electrical system are required, it may result in additional expenses.

Electrical system requirements

The complexity of your existing electrical system and the specific requirements for integrating the transfer switch can impact the cost.

Some older electrical systems may require upgrades or modifications to accommodate the transfer switch, which can increase the overall installation cost.

Existing electrical

The home may require electrical modifications before installing a transfer switch if its current system is not up to code. Installing a new electrical panel costs $850 to $2,500. Installing a subpanel costs $500 to $1,700 for a home with a full, code-compliant electrical panel.1

Labor and professional fees

The cost of labor and professional fees for the installation of a generator transfer switch will vary depending on your location and the contractor you choose.

It’s important to hire a qualified and licensed electrician to ensure the installation is done safely and according to electrical codes.

Master electricians charge more than Apprentice or Journeyman electricians due to their higher education and experience level.

Average cost range for installing a generator transfer switch

The cost of installing a generator transfer switch can range from $500 to $3,000 or more, depending on the factors mentioned above. Here’s a breakdown of the average costs:

Manual transfer switch: On average, a manual transfer switch installation can cost between $500 and $1,500. This includes the switch itself, labor, and any necessary electrical modifications.

Automatic transfer switch: The cost of installing an automatic transfer switch is typically higher, ranging from $1,500 to $3,000 or more.

This higher price reflects the added convenience and automation provided by automatic switches.

Additional costs to consider

In addition to the transfer switch and installation costs, there are a few additional expenses you should keep in mind:

Electrical wiring and permits: Depending on the complexity of the installation and your local regulations, you may need to budget for electrical wiring updates or permits, which can add to the overall cost.

Generator compatibility: If you’re installing a transfer switch to work with an existing generator, ensure compatibility between the switch and generator.

If a new generator is needed, its cost should also be factored into the overall expenses.

Obtaining accurate cost estimates

To obtain accurate cost estimates for installing a generator transfer switch, it’s essential to research and contact local contractors or electricians who specialize in generator installations.

Seek recommendations from trusted sources or utilize online platforms that connect homeowners with qualified professionals.

Once you’ve identified a few potential contractors, request detailed quotes that include all the necessary components, labor costs, and any additional expenses.

Comparing multiple quotes will help you gauge the average cost in your area and ensure you’re getting a fair price.

When selecting a contractor for the installation, consider their warranty and service agreements. A reputable contractor should offer warranties on both the transfer switch and their installation work, providing you with peace of mind and protection against potential issues down the line.

Where to Buy a Generator Transfer Switch

When it comes to purchasing a generator transfer switch, there are several options available for homeowners and businesses.

It’s essential to choose a reliable source that offers high-quality products and excellent customer service. Here are some common places where you can buy a generator transfer switch:

Electrical Supply Stores: Local electrical supply stores are a great place to start your search. These stores specialize in electrical equipment and often carry a wide range of transfer switches.

They can provide guidance on selecting the right switch for your needs and offer professional advice.

Home Improvement Stores: Major home improvement retailers, such as Home Depot, Lowe’s, or Menards, often have a dedicated electrical department where you can find generator transfer switches.

These stores typically offer a variety of options at different price points, making it easier to find a switch that fits your requirements and budget.

Online Retailers: Online shopping platforms like Amazon, eBay, and specialized electrical equipment websites offer a vast selection of generator transfer switches.

Shopping online allows you to compare prices, read customer reviews, and access a wide range of brands and models.

However, ensure that you purchase from reputable sellers with positive feedback to ensure product quality and authenticity.

Electrical Contractors: Consulting with local electrical contractors can be beneficial when purchasing a generator transfer switch.

These professionals often have access to high-quality products and can offer valuable advice on the best switch for your specific needs.

They may also be able to source the switch for you and include it as part of the installation service.

Generator Manufacturers or Dealers: If you’re purchasing a generator and a transfer switch together, consider contacting generator manufacturers or authorized dealers.

They often offer compatible transfer switches for their generators, ensuring seamless integration and optimal performance.

Additionally, they can provide expert guidance on selecting the right switch for your generator model.

When buying a generator transfer switch, it’s important to consider factors such as the switch’s compatibility with your generator, power capacity, and any specific requirements of your electrical system.

Ensure that the switch meets safety standards and has a reliable reputation to ensure a durable and efficient installation.

Before making a purchase, it’s beneficial to compare prices, read product reviews, and consider the warranty or return policies offered by the seller.

By choosing a reputable source and a high-quality transfer switch, you can have peace of mind knowing that you’ve invested in a reliable solution for your backup power needs.


A generator transfer switch is an invaluable addition to any backup power system, providing safety, convenience, and uninterrupted power supply during outages.

While the cost of installing a generator transfer switch can vary based on factors such as the type of switch, power capacity, installation location, electrical system requirements, and labor fees, it’s important to consider these factors and obtain accurate cost estimates from local contractors.

On average, the cost of installing a manual transfer switch ranges from $500 to $1,500, while an automatic transfer switch installation typically costs between $1,500 and $3,000 or more.

Additional expenses to consider include electrical wiring updates, permits, and potential generator compatibility costs.

By researching local contractors, requesting quotes, and comparing prices, homeowners and businesses can make informed decisions and ensure they receive fair pricing for the installation.

Additionally, it’s crucial to consider warranties and service agreements offered by contractors to protect against potential issues in the future.

Investing in a generator transfer switch not only provides safety and convenience but also safeguards electrical appliances and ensures uninterrupted power supply during outages.

By understanding the cost factors and obtaining accurate estimates, you can make a wise investment in a generator transfer switch that suits your needs and budget.

FAQs about Cost To Install Generator Transfer Switch

Here are some frequently asked questions about generator transfer switches and their answers:

What types of transfer switches are available?

There are three types of transfer switches available: manual transfer switches, automatic transfer switches, and breaker interlocks.

How do I pick a transfer switch for my generator?

When choosing a transfer switch for your generator, consider factors such as the amp requirements, manual vs. automatic operation, number of circuits, kit vs. individual parts, electrician experience, and existing electrical system.

How much does it cost to install a generator transfer switch?

The cost to install a generator transfer switch is $400 to $2,500 on average for the unit and labor.

How much does an automatic transfer switch cost?

An automatic transfer switch costs $400 to $2,000 for the unit alone

How much does a manual transfer switch cost?

A manual transfer switch costs $200 to $800

How much does a generator interlock kit cost?

A generator interlock kit costs $400 to $850 installed

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