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FAAC Gate Motor Replacement: The West University Place Owner’s Guide
FAAC gate motor replacement in West University Place typically runs $850 to $2,300 installed, depending on whether you have a swing-arm (S-series or 400-series) or a slide gate (844 or C721), and most replacements are completed the same day we arrive with the correct motor on the truck. The way owners usually discover the motor has failed is not dramatic: the gate simply stops mid-travel, or it starts beeping, or it opens but will not close without being forced. Sometimes the motor still hums but the gate does not move, which tells us the drive gear has stripped rather than the motor itself burning out.
We replace FAAC motors throughout West University Place regularly, and in our experience the failure usually comes down to two things: age (most FAAC motors give 8 to 12 years in Houston’s humidity before the control board or the capacitors start degrading) or a mechanical bind somewhere in the gate itself that overloaded the motor. Before we quote a replacement, we check both, because putting a new motor on a gate that binds will kill the new motor the same way it killed the old one.
Which FAAC Models This Applies To
The FAAC lineup is divided by gate type, and the replacement path is different for each. If you have a swing gate, you are likely looking at an FAAC 400, 412, 415, 422, or the newer S418 or S450H. If you have a sliding gate, you are working with an 844, 844ER, C720, C721, or a 740/741 hydraulic if the property is older. The model number is printed on a small aluminum plate riveted to the motor housing, usually on the side facing away from the driveway. It will also be stamped on the control board inside the cover, and that board number matters as much as the motor number when we match parts.
One compatibility gotcha we see often: the FAAC 400 and 412 look nearly identical from the outside, but the 412 uses a different limit-switch assembly and a different capacitor value. Swapping a 400 motor onto a 412 column without changing those components will run the gate, but the limit stops will be sloppy and the motor will overheat. We match the motor, the capacitor, and the board revision together. On OEM versus aftermarket: FAAC’s own replacement motors (sold through authorized channels) cost 30 to 50 percent more than quality aftermarket equivalents, and for homeowners in West University Place we generally recommend the OEM motor for anything still under a home warranty or HOA gate spec, and a vetted aftermarket motor for everything else. We stock both on the truck for the 400-series and 844-series because those cover most of the FAAC gates in this area.
Signs Your FAAC Gate Motor Replacement Is Failing

- Humming but no movement. The motor is getting power and the capacitor is energizing the start winding, but the drive gear or the worm gear inside the housing has stripped. This is repairable in some 400-series units, but we typically see it on motors past the ten-year mark where the gear set is no longer sold separately.
- Gate stops at random points and reverses. The limit switch is losing its reference position, or the encoder is sending intermittent pulses. On FAAC hydraulic units this often means the oil has thinned from heat cycling and the pressure sensor is tripping early.
- Motor trips the breaker or the GFCI repeatedly. This is usually a shorted capacitor or a winding going to ground. In a garage or driveway circuit that also feeds landscape lighting, this gets mistaken for an electrical problem in the house, but we find the fault in the motor capacitor more often than not.
- Gate moves noticeably slower than it did six months ago. On an FAAC swing arm, slow travel means the motor is working harder against increased friction, either in the hinge bearings or in the operator’s internal gearbox. Ignoring it will finish the motor in a season.
- Control board shows a fault code or burned relay smell. FAAC boards have diagnostic LEDs that flash specific sequences. A burned relay smell means the board’s motor relay has welded or arced. The motor may still be fine, but the board is now the part that needs replacing.
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AfterReplacement Cost & What’s Included
In West University Place, a swing-gate FAAC motor replacement (400-series or S-series) runs $850 to $1,600 installed depending on whether we are reusing the existing arm bracket and column mount or replacing those as well. A slide-gate replacement (844 or C721) runs $1,400 to $2,300 because the rack, the end stops, and often the wheel rollers need attention at the same time. We write the exact price before any work starts, itemized with the motor, any brackets, any board work, and labor separated. You approve that number first. If the gate binds and we find it mid-job, we stop, we show you the bind, and we quote the correction as a separate line item before touching it. No surprise invoice at the end.
Every FAAC motor we install is covered by our 365-Day Done Right Promise. If the replacement motor fails or the gate is not operating correctly within a year, we return and make it right at no charge. You also get a photo record of the install: the old motor off, the new motor on, the limit-switch positions, the wiring terminations. That record stays with you and in our file, so five years from now no one has to guess what was installed and how it was set.
DIY or Call Us?

There is honest room for an owner to do some of this work. Checking the capacitor for a bulged top, confirming the breaker is not tripped, and reading the diagnostic LED sequence against the FAAC manual are all safe and useful. What goes wrong in DIY FAAC motor replacement usually involves the high-tension aspects of the gate itself. A swing gate arm under load is carrying hundreds of pounds at the hinge point, and a slide gate that gets unbolted from its rack can roll free and pin someone. We have also walked onto job sites where a homeowner replaced a motor without re-setting the limit switches, and the gate traveled past its stops and ripped the arm off the column.
If the gate is binding, if the hinges have sagged, if the motor is hydraulic, or if you are not comfortable working around 120V with the cover off, call us at (346) 375-5416. We will send a background-checked technician who arrives with the most likely motor candidates for your FAAC model already on the truck, and the first thing they hand you is a written price.
FAQs
An FAAC gate motor in Houston-area heat and humidity typically lasts 8 to 12 years, with the control board capacitors and the drive gears failing before the motor winding itself. Coastal-adjacent humidity and afternoon sun on a dark metal housing both shorten that window. Call (346) 375-5416 and we can inspect the motor and tell you what is actually failing and how much life is left.
On some FAAC 400-series units, yes, the drive gear and the capacitor can be replaced individually, which runs $280 to $450 versus $850 to $1,600 for a full motor swap. On FAAC hydraulic units, once the pump seals or the pressure sensor are gone, the replacement math generally favors a new motor. Call (346) 375-5416 and we will quote repair versus replacement honestly, with the prices in writing.
A swing-gate FAAC motor replacement takes about 2 to 3 hours from arrival to a fully tested, fully photographed install. A slide-gate replacement takes 3 to 5 hours depending on rack condition and roller wear. We tell you the time window when we quote the job, before anything starts.
We stock FAAC 400-series, S418, S450H, and 844 replacement motors on our trucks because those cover the majority of FAAC gates in West University Place. We also carry parts for LiftMaster, Mighty Mule, and Ghost Controls for properties with mixed equipment. If we do not have a rare model, we order it and you know the ETA before we leave.
If you have an FAAC gate motor that is failing or already dead, call (346) 375-5416 and describe what the gate is doing. We will tell you what it likely is, what the replacement will cost before we show up, and when we can get to your property in West University Place. Found it, priced it, fixed it, that is the whole job.
Written by Adrian Vance, Owner, Vance Gate Repair West University Place at Vance Gate Repair West University Place, serving West University Place and nearby areas.





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