Full 25-point door and opener safety check with every visit - springs, cables, rollers, tracks, and your LiftMaster or Chamberlain opener included
You get a price before we start. It does not change when the truck arrives.
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Before
AfterSensor Calibration in Longmont, CO
Sensor calibration in Longmont typically costs between $95 and $175, depending on whether the issue is a simple alignment adjustment or a replacement of a faulty logic board connection. When your garage door sensors fail to communicate, the door will refuse to close or will reverse immediately upon hitting the ground, leaving your home vulnerable. At Servo Garage Doors Longmont, we treat sensor issues as a priority because they are a safety mechanism, not just a convenience feature, and we include sensor calibration as part of our Garage Door Repair services. We provide a written, flat-rate price for every calibration service before we touch a single wire, ensuring you know exactly what the cost is before work begins.
If you are experiencing issues with your garage door sensors, call (970) 528-5851 to have a technician inspect your system. We serve the entire Longmont area, from the older homes near Main Street to the newer developments on the city’s east side. Whether your system is a modern LiftMaster or an older Chamberlain, we use a documented, evidence-first approach to fix the problem correctly the first time.
Sensor misalignment is often mistaken for a mechanical failure. Before you assume you need a new motor, we look at the photo-eye alignment, wiring integrity, and the logic board settings. This is a core part of our Garage Door Repair in Longmont service, where we focus on identifying the root cause of the fault rather than selling parts you do not need. Every visit includes a documented photo record of what we found, adhering to Clause 4 of The Haven Standard.
When You Need Sensor Calibration
You generally do not need a technician for minor alignment issues, but if the sensor light continues to blink or the door refuses to close, professional recalibration is required. Here are the specific signs that your system requires a technician’s attention:
- Constant Blinking LED: If the amber or green LED on your sensors is blinking or dark, the safety beam is broken or the sensor is failing to transmit a signal.
- Door Reverses Mid-Travel: Your door begins to close, then stops and reverses back to the open position without hitting an obstruction, indicating the logic board is not receiving a clear signal.
- Sensitivity to Sunlight: In Longmont, especially on south-facing garages, intense sunlight can sometimes interfere with older infrared sensors, causing them to trip falsely.
- Physical Damage to Wiring: If you see frayed wires or the sensor bracket is loose due to vibration or accidental impact, the system cannot be reliably calibrated.
- Intermittent Connectivity: The door works sometimes but fails when the temperature drops or during high-wind events common in Northern Colorado, suggesting a loose connection that needs to be traced.
When the sensors are misaligned, the garage door opener interprets this as an obstruction in the path of the door. Safety regulations require that the door reverses to prevent injury or damage. Attempting to bypass these sensors is a significant safety risk; never disable a safety system. If you cannot get your door to close, call (970) 528-5851, and we will dispatch a technician trained in Spring Repair and other safety protocols to restore your system.
Our Sensor Calibration Process
At Servo Garage Doors Longmont, we do not guess. We follow a strict, documented procedure for every calibration request. This ensures that the repair is permanent and that you, as the homeowner, see exactly what was wrong.
- Visual Inspection of Physical Alignment: We first check the physical mounting of the photo-eyes. If the bracket is bent or the sensor is pointed at the floor rather than its counterpart, no amount of electronic tuning will fix it. We correct the physical mount first.
- Wiring Integrity Check: We examine the low-voltage wires running from the sensors to the motor unit. In older Longmont homes, these wires can become brittle or damaged by rodents or accidental contact. We test for continuity and verify the connection at the terminal block.
- Signal Verification: Using a multimeter, we measure the voltage reaching the sensors to ensure the logic board is sending the correct power. If the voltage is inconsistent, the problem lies in the opener unit, not the sensors themselves.
- Logic Board Reset: Once the hardware is aligned and wired correctly, we cycle the opener and clear any error codes stored in the memory. This forces the system to re-learn the sensor signal.
- Documentation and Testing: We perform a safety reversal test to ensure the door stops and reverses when the beam is broken. We then provide you with a photo record of the findings, fulfilling our commitment to transparency under The Haven Standard.
This process is standard for all major brands we service, including Genie and Clopay. By following these steps, we eliminate the guesswork that often leads to repeat service calls.
BeforeAfterSensor Calibration Pricing in Longmont
We provide upfront, written pricing before any work starts. Because we operate as an independently owned and operated business under The Haven Standard, we do not inflate prices or add mystery fees. Our pricing reflects the time and expertise required to diagnose and correct the issue correctly.
| Service Type | Estimated Price Range |
|---|---|
| Standard Sensor Alignment & Wiring Repair | $95 – $135 |
| Sensor Replacement (Hardware + Labor) | $140 – $175 |
| Logic Board Diagnostics (When Sensors Fail) | $120 – $160 |
If you have already received a written estimate from another company, bring it to us. We offer a Free Second Opinion on any competing estimate, and we will provide our own written price based on our inspection. To schedule a visit, contact us at (970) 528-5851.
FAQs - Sensor Calibration
Why does my garage door only close when I hold the wall button down?
If your garage door requires you to hold the wall button to close it, the system has detected a fault in the safety sensors and has defaulted to a manual override mode. This is a safety feature designed to ensure you are physically present to stop the door if something is in the way. The sensors are likely misaligned, blocked, or have a broken wire that may need Cable Repair. Call (970) 528-5851 if you cannot resolve the alignment, as we can quickly diagnose the break in the signal.
Is it cheaper to replace the sensors or the whole opener?
In most cases, it is significantly cheaper to replace the sensors. A sensor calibration or replacement costs a fraction of a full opener installation. We only recommend replacing the opener if the logic board is failing to process the signal from the sensors, which is a more systemic issue. We will always show you the evidence of the failed component, per Clause 4 of The Haven Standard, before suggesting any replacement.
Can high winds in Longmont affect my garage door sensors?
Yes, high winds can cause the garage door tracks to vibrate or shift slightly, which can misalign the sensors if they are mounted directly to the track, often requiring Track Realignment. Additionally, wind can blow debris into the path of the beam or cause the door to flex, potentially triggering the safety reversal. If you notice your door having trouble closing during windy weather, the mounting brackets may need to be secured more firmly.
What is the 365-Day Done Right Promise?
The 365-Day Done Right Promise is our guarantee that the work we perform is done correctly. If a repair we performed fails or does not function as intended within one year, we make it right. This is not a handshake agreement; it is a documented standard we uphold for every customer, ensuring that your investment in a professional repair is protected.
If you are ready to get your garage door back in working order, call (970) 528-5851 to speak with a professional. We offer free estimates and clear, written pricing so you know exactly what to expect before we arrive at your home.
Written by Marcus Deller, Owner at Servo Garage Doors Longmont, serving Longmont.