How Much Does It Cost to Replace a Garage Door Sensor? [2025 Data]

Garage Door Sensor Cost Factors

Garage door sensors are great when they work— but a dangerous annoyance when they don’t. If your garage door acts strange when closing or simply won’t close at all, you may not have a broken garage door. All you may need to do is clean or realign your door sensors. 

Types

There are a few types of garage door sensors, but most look like two small boxes near the base of the garage door, one on either side, that connect an infrared beam between the two. If anything crosses the beam while the door is closing, it will reverse the door so that it doesn't close on anything—or anyone.

The other garage door sensors are not as common because they are more expensive, both in material costs and installation. However, using one or more together will always be safer than using one single safety mechanism.

The sensor types all function in different ways. Which one you choose depends on both your budget and safety concerns:

• Infrared sensor: detects obstructions via infrared beams.

• Pressure sensor: monitors weight on the door.

• Contact sensor: features a piece on the door and a piece on the wall physically joining, stopping the door.

• Smart sensor: is similar to the contact sensor but uses electronic proximity.

Most homes only use the infrared sensor because it's commonly installed when the garage door itself is installed, but certain combinations help to cover all bases. Infrared and pressure sensors combined would be the most powerful (and safest) combination, but they would also be the most expensive. Smart sensors used with infrared would work well but not rely on physical contact points. However, it would be less expensive than using pressure sensors.

Size

Size doesn’t play a large factor in the total cost because the sensor doesn't do any heavy lifting itself. The sensor acts like a remote control, which means a very lightweight piece sending an electronic signal to the garage door motor doesn't need to weigh any different, regardless of whether it’s controlling a 300-pound door or a 30-pound one.   

Labor 

It’s best to hire a garage door professional to install and check the sensors. Expect to pay an hourly rate between $40 and $110 per hour. The good news is this work shouldn't take more than one hour. To save money, make sure you tell your local garage door repair professional the exact model of your garage door motor. This ensures that the sensors and existing electronics are compatible. 

Prep

The prep work for replacing a garage door sensor is fairly simple. Make sure there's nothing in the way of the sensor path if you're using infrared. The existing garage door should be functioning well with nothing in the way of the door tracks. Clean the area and ensure that if you need an electrical outlet, it functions at the right voltage. Expect to pay anywhere between $1 and $20 for an electrical outlet, depending on the type you need.

Ongoing Expenses

Maintenance

Garage door sensors don't require much maintenance other than cleaning off dust and dirt. Check the mounting screws and tighten them every few months or when you notice any movement. One of the nice things about garage door sensors is that they normally only require maintenance when they stop working correctly. This takes a lot of guesswork out of when to check them. That being said, inspect them every three months or so.

Repairs

Because garage door sensors are relatively inexpensive and function as a pair, it's a better idea to just replace them than attempt any type of repair. Even the physical sensors, when bent out of alignment, are not easy to repair and cost less than $50 to replace entirely.

DIY Installing Garage Door Sensors vs. Hiring a Garage Pro

Unless you're particularly savvy with electronics, you shouldn't take this project on. Not only is it relatively inexpensive to hire a garage professional for this task, but a good rule is to hire out the work if there's any chance an improper installation could cause injury. Instead, consider taking on one of the many DIY home projects that you can undertake, even if you don’t have in-depth experience.

That being said, if you feel confident enough to take on this task as a DIY project, you’ll only pay for the cost of the sensor itself—so you’ll save between $40 and $110 in labor costs.

Tips to Reduce Cost While Installing Garage Door Sensors

There are a few ways you can reduce your garage door sensor installation cost:

• DIY the project if you have prior experience and are confident in your ability.

• You can also consider upgrading your system with a new motor if it's getting old, as you'll find combining the two together should save you money on both the motor and the sensors.

• Choose the least expensive sensors, as long as they’re still reliable.

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 extensively research project costs to develop the pricing data you see, so you can make the best decisions for you and your home. We rely on 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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