What it costs
Garage door sensor replacement cost
Typical
$95 – $200
Most jobs land near $130 · for a pair, fitted
$95 to $200 for a pair fitted. Before you spend it, wipe both lenses and check the alignment — most doors that will not close have working sensors that simply cannot see each other, and that is a five-minute fix costing nothing.
What is in the price
- A matched pair of sensors for your opener brand
- Fitting, wiring and alignment
- Testing the safety reverse
What moves it
Why two quotes differ
| Factor | What it does to the number |
|---|---|
| Brand | Sensors are not universal. A pair matched to your opener is the only thing worth fitting. |
| The wiring | The two-core wire is stapled along the wall and is easily nicked. A new run adds a little labour and is usually the actual fault. |
| Whether it is the sensors at all | A blinking sensor is a symptom. Alignment, sunlight and a damaged wire all produce it, and none of them needs a new part. |
National guide ranges, checked September 2026. Prices move and vary a great deal by state — get it in writing before you commit.
Central Florida
MF Garage Doors
Talk to the people who do the work, not a call centre.
Call (863) 592-2143Repairs and service within 40 miles of Sebring — Avon Park, Lake Placid, Wauchula, Arcadia, Lake Wales, Bartow, Frostproof and Winter Haven.
New doors and replacements across central Florida — Tampa, Orlando, Lakeland, Winter Haven, Kissimmee, Clermont, and everywhere between.
Other costs
Is this your problem
How you know you need it
- One sensor light blinking rather than steady — that is the receiver saying it cannot see the sender.
- The door starting to close and then reversing straight back up.
- It only failing at a certain time of day, which is usually low sun into the receiver.
- It working when you hold the wall button down, which confirms the sensors are the fault and not the opener.
Before you say yes
What to ask whoever quotes you
- Is it actually the sensors, or the alignment? Nine times out of ten it is alignment, and that costs nothing — a contractor who charges for two new sensors without trying that first is not one to use again.
- Is the wiring being checked back to the opener? A staple through the cable from somebody tidying the garage is a common cause and it fails intermittently.
- Do the replacements match my opener's brand and generation?
Doing it yourself
Can you?
Yes, and this is the most satisfying five minutes on this list. Clean both lenses, loosen the wingnut, line them up until the light steadies, tighten. Most “broken sensor” calls are that. What you must not do is wire them out to make the door close — they are what stops it closing on a child.
Also asked
Garage door sensor replacement cost, answered
Do the sensors actually need replacing, or just aligning?
Nine times out of ten, aligning. The pair have to face each other and see each other: a steady light on both is right, a blinking one is not. A knock from a bicycle or a bag is enough to put one out. Clean the lenses, loosen the wingnut, line them up until the light steadies, and tighten. That costs nothing.
The door closes if I hold the button — is that a sensor fault?
Yes, and it is the system working as designed. Holding the wall button overrides the sensors for exactly that reason, so a fault does not trap your car. Use it to get the door shut and then fix the sensors — that override is a way out, not a way to live.
Can I just disconnect them?
You can make the door close that way and you should not. The sensors are what stops a closing door on a child or a pet, and they have been required on residential openers in the United States since the early 1990s. A door that closes on something it should have reversed off is the one fault on this site that is not about money.