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Get your free estimateLinear Gate Motor Replacement: The Miami Owner’s Guide
A Linear gate motor replacement in Miami typically runs $650 to $1,250 installed, depending on your model and whether the arm, control board, or the entire operator unit needs swapping. We keep Linear-compatible motors and the most common Linear OEM parts on the truck, so most Miami jobs are completed the same day we arrive. The way you usually find out is simple: the gate stops mid-swing, hums without moving, or the remote does nothing and the manual key just clicks.

Most Linear failures aren’t mysteries. We see the same three or four culprits week after week in Miami, and salt air near the coast accelerates every one of them. Cole Rafferty has been diagnosing Linear units long enough to know that a humming motor usually means a blown capacitor, and a dead panel usually means the control board took a surge during a Florida thunderstorm. The good news: Linear parts are common enough that we rarely have to order and wait.
Key takeaways:
- Installed Linear gate motor replacement in Miami runs $650 to $1,250 for most swing and slide gate setups.
- We stock Linear OEM and reputable aftermarket parts on our service vehicles.
- Every job gets a written price before we touch a screw. No surprises at the end.
- Warden Gate Repair is an independent service provider. We’re not affiliated with Linear, which means we’re free to sell you the part that actually fits your budget and your gate.
Which Linear Models This Applies To
Linear has been building gate operators for decades, and the model names get confusing fast: the LDO50, the APeX series, the popular Linear PRO access line, and the newer Linear M series for residential swing gates. The single most useful thing you can do before calling is open the plastic cover on your operator and look for the silver or white label. It lists the model number, often the serial number, and the voltage rating. Take a photo of it with your phone. That label is how we match the right motor, the right arm, and the right board without guessing.
Here’s the compatibility gotcha most Miami owners don’t know: Linear changed the limit switch design between older and newer production runs on several swing-arm models. A motor from a 2015 LDO50 may not drop directly into a 2020 unit without a matching limit harness. If you buy a used or clearance motor online, you can end up with a part that fits the bolt pattern but won’t talk to your existing limit assembly. We match by label and production date, not just by “Linear swing arm motor.”
When it comes to OEM versus aftermarket, our honest position is this: for Linear control boards and capacitor kits, we use OEM parts nearly every time. They’re reasonably priced and they’re what the unit was engineered around. For motors and gears, there are quality aftermarket equivalents that save real money and hold up well in Florida’s heat, so we’ll offer the choice and give you a straight recommendation based on the age of the rest of the operator.
Styles & brands we work with





Signs Your Linear Gate Motor Is Failing
- The gate hums but doesn’t move. This is almost always the start capacitor or a seized drive gear. The motor’s getting power, but it can’t spin the drive under load. We replace the capacitor and inspect the gear in the same visit so you’re not back in this position in three months.
- The gate moves slower than it used to. In Miami’s humidity, we see motor windings degrade slowly before they fail outright. Sluggish operation is the warning shot. If you wait, the motor eventually won’t move the gate at all, and then you’re buying a full replacement instead of addressing the wear early.
- The gate reverses mid-cycle for no reason. This is frequently an obstruction sensor or a failing control board, not the motor itself. The board reads false resistance and tells the motor to back off. We test the board separately before recommending a motor replacement, because a new motor won’t fix a bad board.
- The remote and keypad work intermittently. If the receiver cuts in and out, suspect the antenna or the board’s receiver module. Linear’s older PRO series had receiver modules that would corrode at the connector in coastal air, even inside the housing.
- You hear grinding or a loud click before the gate stops. That’s a stripped drive gear or an actuator arm with a worn internal screw. The motor keeps spinning, but the gate’s not moving. Left alone, this takes out the motor too, because it’s working against a jammed drivetrain.
Replacement Cost & What’s Included
Let’s put real numbers on it for Miami:
- Linear swing gate motor replacement (actuator arm only): $350 to $550 installed
- Linear operator full replacement (motor plus arm assembly): $650 to $950 installed
- Linear slide gate motor assembly: $600 to $900 installed
- Linear control board replacement: $250 to $450 installed
- Capacitor or limit switch repair: $140 to $250 installed
What drives the range on the higher end is the condition of the mounting hardware and whether the existing arm can be re-used. Salt air near Coconut Grove or Key Biscayne corrodes mounting bolts and hinge points faster than inland Miami like Doral or Hialeah, and sometimes that hardware has to be cut out and replaced before the new motor goes in. Every quote includes parts, labor, and hardware. You get the written number before we start, and it doesn’t change unless you ask us to do additional work you approve first. The work itself is backed by our 365-Day Done Right Promise: if something isn’t right, we come back and make it right, free of charge.
See the difference
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AfterDIY or Call Us?
There are two things you can safely check without a tech: the power source and the manual release. If the breaker’s tripped or the GFCI popped, reset it and test again. If the operator has a manual release pull or key, use it to disengage the gate and swing it by hand. If it moves freely with the motor disengaged, the gate itself is fine and the problem is in the operator. If it doesn’t, the gate’s binding and no motor will fix that.
Beyond that, I’ll be straight with you: a Linear gate motor replacement involves 120V or 240V wiring, capacitor discharge, and a gate under tension or weight load. Shorted capacitor connections can cause a serious electrical shock, and an improperly mounted arm can send a heavy gate swinging into a car, a kid, or a neighbor’s fence. We’ve fixed homeowner attempts in Coral Gables and Kendall where the right part was installed wrong and destroyed itself in a week. If you’re not comfortable working with live wiring, that’s not a knock on your skills, it’s just the truth. We’re one call away at (850) 495-7564, and the written price means you’ll know the damage before we lift a tool. Know what’s broken before we touch it. Fix it once.
FAQs
In Miami’s heat, humidity, and salt air, most Linear gate motors last 6 to 10 years with a properly maintained gate. Coastal homes in Coral Gables, Coconut Grove, and Key Biscayne trend toward the lower end of that range, while inland Miami properties often get the full decade or more. Regular cleaning, hardware checks, and addressing slow operation early will stretch the lifespan noticeably.
Yes, in many cases. If the motor hums but won’t turn, the capacitor is usually the fix and it’s a $25 part. If the arm extends but the gate doesn’t move, it’s often a stripped gear or screw inside the arm, and we can rebuild it. The motor itself is the last thing to fail in most Linear units, which is why we test the board, capacitor, and drive assembly before recommending a full motor replacement. Call (850) 495-7564 and we’ll walk through the symptoms with you before scheduling.
Most Linear swing gate motor and arm replacements take 90 minutes to 2 hours from start to finish. Slide gate motor replacements can run 2 to 3 hours depending on mounting location and hardware condition. If we need to pull corroded bolts or re-align the gate, we’ll tell you before we start, and the written quote already accounts for it.
Yes. We stock Linear OEM capacitors, limit switches, control boards for the most common Linear swing and slide models, and both OEM and quality aftermarket arm assemblies. We also stock compatible parts for LiftMaster, Mighty Mule, and Ghost Controls units if your property has a mixed setup or you’re considering switching brands. If your specific board or motor isn’t on the truck, we order it and schedule the install as soon as it lands, usually within 2 to 3 business days.
Call Warden Gate Repair Miami
If your Linear gate motor is making noise, moving slow, or not moving at all, call us at (850) 495-7564. You’ll get a live person on the phone, a written price before any work starts, and a technician you’ll know by name and photo before they arrive. That’s the whole idea behind the name: a warden is trusted to watch over a place and keep it secure. That’s exactly how we treat your gate, and exactly how we treat you at the door.
Written by Cole Rafferty, Owner, Warden Gate Repair Miami at Warden Gate Repair Miami, serving Miami and nearby areas.