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Get your free estimateLinear Gate Motor Replacement: The San Diego Owner’s Guide
Linear gate motor replacement in San Diego typically runs $450 to $950 installed, depending on the model and whether we’re swapping the motor only or the full operator assembly. We stock Linear-compatible motors on the truck, and most residential swaps are done in under two hours. If your gate’s been making a grinding noise, moving slower than usual, or stopping halfway with no apparent cause, the motor is usually the culprit. We see it in San Diego constantly: a motor that worked fine for years suddenly won’t budge, or trips the breaker the moment it tries to start.

Linear motors fail in predictable ways. Sometimes it’s the capacitor, a silver canister about the size of a Red Bull that gives the motor its starting jolt. Other times it’s the motor windings themselves, which cook slowly over years of afternoon sun beating on the control box. Either way, you’ll want a tech who knows Linear’s lineup, not someone guessing at the parts counter. Nico Alvarez and our team at Calder Gate Repair San Diego replace Linear gate motors every week. We show you the old part, write you a price, and if it fails within 365 days, we come back free. That’s the whole agreement.
Which Linear Models This Applies To
Linear’s residential gate lineup breaks into a few families you’ve probably seen: the LRA and LD series for light swing gates, the LSO line for slides, and the older APeX and Pro series controllers that pair with those operators. If you’re not sure what you have, check the silver tag on the operator arm or the inside of the control box. It’ll list a model number like LRA-S, LSO50, or LdCO800. Snap a photo of that tag before you call, and we can tell you if the motor is worth replacing or if the whole operator makes more sense.
Here’s the compatibility gotcha worth knowing: Linear changed motor mounting patterns twice over the past 15 years. A motor sold as “Linear replacement” might fit a 2015 LSO50 but not a 2008 LSO50, because the bolt holes moved. We carry the motor version with the adjustable mounting bracket for exactly this reason. On the OEM-versus-aftermarket decision: for Linear specifically, we recommend OEM motors when the gate sees more than 15 cycles a day or when the operator is under 5 years old. If the unit is older and you want to squeeze a few more years out of it, a quality aftermarket motor with the same torque rating and RPM spec saves you $150 to $250 and installs the same. We give you both prices, written down, before anything comes off the gate.
Styles & brands we work with





Signs Your Linear Gate Motor Replacement Is Failing
- Humming with no movement. The motor’s getting power but the start capacitor has failed, so it can’t build enough torque to move the gate. You’ll hear it clearly: a low hum for 5-10 seconds, then either a thermal shutoff or a tripped breaker. The capacitor is a $30 part, but if ignored, the stalled motor burns out its windings within a few weeks.
- Slower operation than usual. A tired motor draws more current and moves less mass. If your gate that used to open in 8 seconds now takes 14, that’s not weather. The motor’s torque has dropped, and it’s working against itself. San Diego’s salt air near the coast accelerates this on exposed operator arms.
- Gate stops halfway and reverses. The motor’s drawing enough current to trip the operator’s obstruction sensor, which thinks something’s blocking the gate. The sensor’s fine, the motor’s fried. You’ll see this in the afternoon when the gate and motor are hottest.
- Burnt electrical smell from the control box. If the control box smells like a soldering iron, the motor’s windings have been overheating. Kill power to the operator and call us. This is a fire risk, not just a gate problem.
- Breaker trips only when the gate moves. This is the motor pulling more amps than the circuit can give. If you have to reset a breaker every week, the motor’s on borrowed time. Replacing it before the operator board fries saves you another $300.
Replacement Cost & What’s Included
Here’s the straight answer: a Linear gate motor replacement in San Diego runs $450 to $950 installed. The spread comes down to three things: whether it’s a swing or slide motor (slide motors are larger and cost more), whether we’re doing motor-only or motor-plus-controls, and whether the unit needs a new capacitor or limit assembly at the same time. You’ll see the exact breakdown before we turn a single bolt.
| Linear Motor Replacement | Typical Installed Price |
|---|---|
| LRA/LD swing gate motor, motor only | $450 – $650 |
| LSO slide gate motor, motor only | $550 – $750 |
| Full operator assembly (motor + controls + arm) | $750 – $950 |
| Capacitor replacement (often done with motor) | $30 – $50 added |
The price you’re quoted includes the part, the labor, disposal of the old motor, and a written 365-Day Done Right Promise from Calder Gate Repair San Diego. If the replacement motor fails within a year, we come back and make it right at no charge. No partial warranties. No fine print. The number on your invoice is the number we agreed to at the door.
See the difference
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AfterDIY or Call Us?
Here’s what I’d tell a friend, straight up: this is a 120V-to-240V component wired into a control board. If you’re comfortable with a multimeter and you want to check whether it’s actually the motor, you can test the capacitor and the resistance across the motor terminals with the power off. That’s a 10-minute diagnosis that tells you whether it’s the motor or the board. What you should not do is attempt the motor swap yourself. The motor bolts to a gearbox under tension, the wiring routes through a control board that’s easy to short, and a misaligned mount burns out the new motor in a month. We replace these a few times a week across San Diego, from Tierrasanta driveways to Otay Mesa commercial lots, and the swap takes us about two hours. You’ll get a trackable arrival window, a written price, and before-and-after photos so you can see exactly what was replaced. Call (619) 541-7844 if you’re seeing any of the symptoms above.
FAQs
A Linear gate motor in San Diego lasts 7 to 12 years on average, depending on daily cycles and sun exposure. Motors on west-facing gates near the coast tend to fail earlier because the control box cooks in direct afternoon heat, degrading the motor windings faster than the gearbox wears. If you’re at the 10-year mark and seeing symptoms, replacement beats repair. Call (619) 541-7844 for a free assessment.
Sometimes, yes, if the issue is a failed capacitor, a loose wire, or a bad limit switch, which is a small sensor that tells the gate where to stop. If the motor windings are burned out or the gearbox is seizing, repair isn’t worth the labor. We’re honest about which one it is. We don’t sell you a motor when a $30 capacitor would fix it.
A typical Linear gate motor replacement takes about two hours from unbolting the old motor to testing the full open and close cycle. If we’re also replacing the capacitor or limit assembly, allow an extra 30 minutes. We give you a live arrival window before we dispatch, and you’ll get a digital invoice you can pay from your phone.
Yes, our San Diego technicians carry Linear-compatible motors for the LRA, LD, and LSO series on the truck, along with capacitors and limit switches. We also stock parts for LiftMaster, Mighty Mule, and Ghost Controls, but we work on all nine major opener brands. In the rare case we need to order a specific motor variant, it’s two business days to our shop and we schedule the install the day it arrives.
Call Calder Gate Repair San Diego for Your Linear Motor Replacement
If your Linear gate motor is failing, don’t wait until the gate won’t open at all. A locked gate on a San Diego hillside means a car stuck on the street or a driveway you can’t use. Call (619) 541-7844 now. You’ll get a live person on the phone, not a voicemail. We’ll schedule a time that works, send a uniformed tech with a tracked arrival window, and put the price in writing before any work starts. Calder Gate Repair San Diego is part of the Relay Home Co. family, founded in 2009, and every job carries the same three guarantees: written price before work starts, written guarantee on the repair, and a free second visit if it fails within 365 days. Show you the part, write you the price, fix it right the first time.
Written by Nico Alvarez, Owner & Gate Repair Technician, Calder Gate Repair San Diego at Calder Gate Repair San Diego, serving San Diego and nearby areas.