How much it costs to have a garage door sensor replaced depends on whether you DIY or hire professional, but typical costs are modest compared to other garage door repairs. For DIY replacement, a pair of universal garage door safety sensors costs 20 to 50 dollars at home improvement stores or online, with brands like Chamberlain, LiftMaster, and Craftsman compatible sensors available, and you can install them yourself by disconnecting power, removing old sensors, connecting new sensors to same two wires, mounting at same height near floor, and aligning until LEDs are solid. For professional replacement, cost includes service call fee of 75 to 150 dollars plus sensors cost of 20 to 50 dollars, bringing total to 100 to 200 dollars for professional sensor replacement, depending on company and location. Some companies charge flat rate of 150 dollars for sensor replacement including labor. If wiring is damaged and needs replacement, additional cost of 50 to 100 dollars for new bell wire may apply. Emergency or same-day service may cost extra 50 dollars. Getting multiple estimates ensures fair pricing. Since sensors are safety feature required by law to prevent door closing on people or objects, replacement is important for safety and should not be bypassed. Regular cleaning of sensor lenses monthly prevents need for replacement. Keeping gutters above garage clean prevents water damage to sensors and wiring that could cause sensor failure and additional costs.
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