Garage Door Garage Door Sensor Installation San Francisco, CA
Our garage door sensor installation service covers all of San Francisco: Mission, Sunset, Richmond and Noe Valley. Set in California's Mediterranean climate region, these doors face intense afternoon UV that dries out weather seals and bottom gaskets, fine road and yard grit that grinds rollers over time, and mild but steady humidity swings that quietly seize hinges, and we plan every repair around it.
If you've owned a garage door through a few San Francisco seasons, you know the pattern: warm, dry summers and cool, wet winters, moderated by long stretches of sunshine and modest rainfall brings intense afternoon UV that dries out weather seals and bottom gaskets, fine road and yard grit that grinds rollers over time, and mild but steady humidity swings that quietly seize hinges. We size and protect replacements accordingly.
When San Francisco doors quit, it's usually broken torsion springs on high-cycle suburban doors, worn nylon rollers on doors cycled several times a day, noisy, vibrating doors from loosened hardware, and drifting travel limits on aging chain-drive openers. Our diagnostic isolates the true cause so the fix actually lasts.
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.
Status light blinks 10 times
Universal LiftMaster code for photo-eye fault. Genie and Chamberlain have similar fault patterns.
Sensors visibly knocked out of alignment
Bumped brackets, lawn-equipment impacts, or vehicle contact all knock sensors out of aim. Realignment is a quick fix.
Older opener with no sensors
Pre-1993 openers don't have photo-eyes. Retrofit is possible on most models — and brings the door to current safety code.
Common causes & what we fix
Bracket misalignment
Brackets shift slightly from temperature cycling, vibration, or contact. Even a few degrees off-aim breaks the sensor beam.
Lens dirt or insects
Dust, spider webs, and insect carcasses block the infrared beam. Cleaning the lens often restores function.
Sun glare interference
Direct sunlight hitting the receiver lens can saturate the sensor and trigger false obstruction. Shielding or repositioning fixes.
Wire damage
Mice chew sensor wires; landscapers occasionally cut them. Replacement and re-routing fixes.
Sensor end-of-life
Photo-eye electronics fail at 10–15 years. Replacement is inexpensive and quick.
Our process
- Call or schedule online.Pick a 2-hour window. We confirm in under 5 minutes with the assigned tech's name and photo.
- On-site diagnosis. Free for most repairs; $39 diagnostic on minor service calls (waived if you proceed). You see the issue and the fix before we start.
- Flat-rate quote. Written estimate before any work. No hourly creep, no upsell pressure — techs are salaried, not commissioned.
- Same-visit fix. 96% first-call fix rate. We test the door with you before leaving and clean up everything we touched.
How much does garage door sensor installation cost in San Francisco, CA?
Garage Door Sensor Installation cost in San Francisco starts from $99. We present a flat-rate written estimate first, honor senior and military discounts, and offer Synchrony financing at 0% APR for 12 months on qualifying projects over $1,500.
Garage Door Sensor Installation the United States starts at from $99, and every quote for professional Garage Door Sensor Installation the United States is flat-rate and presented in writing before work begins — there are no surprise add-ons or hourly creep. Senior (65+) and military discounts of 10% off labor apply to all residential work. Financing through Synchrony is available on Garage Door replacement the United States projects over $1,500 at 0% APR for the first 12 months, with fast approval and no prepayment penalty.
Why homeowners in San Francisco, CA choose us for garage door sensor installation
For garage door sensor installation in San Francisco, locals choose the team that's been family-run since 1974 and actually services San Francisco County every day — not a lead-gen middleman. Flat-rate pricing, 10-year workmanship guarantee, no upsell pressure.
Our Garage Door repair the United States work is backed for the long haul: the garage door sensor installationworkmanship guarantee is 10 years — separate from any manufacturer warranty on the parts themselves. If the install or repair we performed fails because of how we installed it, we return and fix it at no charge for a full decade. Springs rated for 30,000 cycles carry a lifetime warranty for the original homeowner. Parts and accessories carry standard 1–5 year warranties depending on the item; we'll explain exactly what's covered before we start any work, in writing.
Honest sizing and honest scope are the two principles that drive how we quote garage door sensor installation and every Garage Door installation the United States. We don't up-sell unnecessary work, our techs are salaried (not commissioned), and the diagnostic is structured so you see exactly what we see — including the parts that are still in great shape and don't need attention. If a repair is the right call, we recommend the repair. If replacement is the better long-term economics, we say so. Either way, the quote is flat-rate, written, and good for 30 days so you can compare and decide on your own timeline.
Areas we serve for garage door sensor installation
We provide garage door sensor installation throughout San Francisco, CA and the surrounding San Francisco County area. Serving Mission, Sunset, Richmond and surrounding neighborhoods. Coastal air around San Francisco accelerates spring and hardware corrosion — we fit galvanized hardware and high-cycle springs to compensate.
Think of it this way — San Francisco is California's only consolidated city-county, a dense 47-square-mile peninsula tip ringed by water on three sides. San Francisco is part of that footprint, and we treat every town in it as home turf.
Neighbors of San Francisco — including Brisbane, Daly City, Sausalito, and Colma — get the exact same service. Our trucks already pass through these areas, so adding your stop rarely adds wait time.
Garage Door Sensor Installation near you in San Francisco, CA
Type garage door sensor installation near me from anywhere in San Francisco and you should get a local crew. We serve Mission, Sunset, Richmond and Noe Valley and the towns around it — Brisbane, Daly City, Sausalito, and Colma — to one standard, with no travel surcharge for being a few minutes out.
We cover ZIP codes 94110, 94114, 94117, 94121, 94122, 94131 and the surrounding area. Reach times for Garage Door Garage Door Sensor Installation the United Statesvary by traffic and time of day; we'll quote an accurate ETA when you call. Our dispatch line routes directly to an on-call technician — there's no voicemail system between you and the person who'll be solving your problem.
Frequently asked about garage door sensor installation
Top questions homeowners searching for Garage Door Sensor Installation near me ask us: