Garage Door Sensor Installation in Missouri | Garage Door MO
from $99
Garage Door Garage Door Sensor Installation in Missouri
Photo-eye safety sensor installation, alignment, and replacement. Required by UL-325 safety code — we test auto-reverse and verify the door stops on a 1.5-inch obstruction.
Garage Door Sensor Installation is one part of our garage door opener coverage in Missouri. For the full picture — symptoms, costs, and when to repair vs. replace — start with the complete Garage Door Opener Repair guide, or browse every garage door opener service we offer.
Garage Door Garage Door Sensor Installation in Missouri
Photo-eye safety sensors are required by UL-325 on every garage door opener manufactured since 1993. They detect obstructions in the door's path and either reverse the door (during close) or refuse to start (when activated). When sensors are misaligned, dirty, sun-blinded, or failed, the door either refuses to close at all or — worse — closes without sensing an obstruction. Our sensor installation service replaces failed sensors, realigns drifted brackets, cleans the eye optics, and verifies auto-reverse on a real obstruction test.
Replacement eyes are brand-specific (LiftMaster has a different connector and signal pattern than Genie). We stock the major brands and most legacy models. Brackets occasionally need replacement when corrosion has degraded them or impact has bent them. Bracket alignment is critical — eyes that are slightly off-aim trigger intermittent close failures that drive homeowners crazy.
Every visit ends with an obstruction test: a 1.5-inch (3.8 cm) tall object placed under the door at three positions across the opening. The door must reverse when it touches the object. This is the UL-325 baseline — if the door doesn't pass, the install isn't complete. We document the test results on the work order.
Signs you need garage door sensor installation
Door refuses to close from remote
Misaligned or dirty photo-eyes prevent close. The opener's status light usually blinks 10 times to indicate the photo-eye fault.
Door closes part-way then reverses
Photo-eyes detecting a phantom obstruction (often sun glare or insects). Realignment or shielding usually fixes.
Photo-eye electronics fail at 10–15 years. Replacement is inexpensive and quick.
Our process
1
Call or schedule online. Line up garage door sensor installation for Missouri on a 2-hour window. We answer fast and send a confirmation — tech name, tech photo — inside five minutes.
2
On-site diagnosis. The garage door sensor installation diagnosis happens at your door: free for most repairs, a $39 fee on minor service calls that's waived the moment you approve the work. Nothing begins until you've seen it.
3
Flat-rate quote. The garage door sensor installation quote is flat-rate, written, and locked before work starts. Salaried techs mean no upsell pressure and no hourly creep on the invoice.
4
Same-visit fix. Expect a same-visit garage door sensor installation fix — our first-call success rate is 96%. We confirm the repair by cycling the door with you, then leave no mess behind.
How much does garage door sensor installation cost in Missouri?
Garage Door Sensor Installation the United States starts at from $99, with Missouri garage door sensor installation priced flat-rate and written out before work starts — what you approve is what you pay, with no add-ons. Seniors (65+) and military save 10% on labor, and Synchrony financing runs 0% APR for 12 months on jobs over $1,500, no prepayment penalty.
Why homeowners in Missouri choose us for garage door sensor installation
We've been a trusted choice since 1974 — over 50 years of family-owned garage door service across Missouri. Our techs are CSLB-licensed (#1098234), background-checked, and complete an internal 12-week training program before rolling on calls alone.
Missouri garage door sensor installation comes with a 10-year workmanship guarantee, separate from any parts warranty the manufacturer offers. If our garage door sensor installation fails on its installation, we return and repair it free for a full decade. Springs rated to 30,000 cycles are warrantied for the original homeowner's lifetime; other parts carry standard 1–5 year terms.
We earn trust on garage door sensor installation by quoting straight — no up-sell, salaried (not commissioned) technicians, and a diagnostic structured so you see exactly what we see. When a repair is right we recommend the repair; when replacement is the smarter long game, we say that. The flat-rate garage door sensor installation quote is written and valid for 30 days.
Areas we serve for garage door sensor installation
We provide garage door sensor installation throughout Missouri, with fast coverage in every major Missouri metro.
Travel time for garage door sensor installation tracks Missouri traffic and time of day, so the accurate ETA comes when you phone in. Calls route directly to an on-call technician — no phone tree, no voicemail.
Frequently asked about garage door sensor installation
Top questions homeowners searching for Garage Door Sensor Installation near me ask us:
UL-325 has required them on residential openers since 1993. UL-325 is the governing federal safety standard. Older openers without photo-eyes are non-compliant when replaced.
Yes for matching same-brand same-generation replacements — relatively straightforward. Cross-brand replacements often don't work due to signal differences. Our flat-rate quote covers it installed, confirmed before we start.
Realignment: 15–30 minutes. Sensor replacement: 30–60 minutes. Full retrofit on an older opener: 60–90 minutes.
1-year manufacturer coverage on replacement sensors; 10-year workmanship on the install.
Same-brand same-generation: yes. Different generation: sometimes, depends on the model. Different brand: rarely. We match generation when ordering.