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FAAC Gate Motor Replacement: The Carrollton Owner’s Guide
FAAC gate motor replacement in Carrollton typically runs between $1,200 and $2,600 installed, depending on the model (hydraulic 400-series versus electromechanical C720/C721) and whether the mounting plate and arm bracket can be reused. We stock FAAC-compatible motors and components on our trucks, so most residential replacements are completed the same day. The way Carrollton homeowners usually discover the motor has failed is simple: the gate starts moving slower than it did last month, then one morning it moves six inches and quits, or it just sits there humming against a closed limit.

If your FAAC operator is dead at the board, intermittent, or physically leaking from the piston seal, this page tells you what you’re dealing with, what it costs in this market, and what to check before you spend a dollar. We’re an independent service provider, not affiliated with FAAC, and we carry parts for their swing and slide operators alongside LiftMaster, Mighty Mule, Ghost Controls, and the other major brands.
Key Takeaways
- Installed FAAC motor replacement in Carrollton: $1,200-$2,600 depending on model and whether brackets transfer.
- We stock FAAC hydraulic and electromechanical motors on the truck for same-day swap on most residential gates.
- Photo log and written part number come with every job, per our Haven Standard.
- Free estimate, written price before any work starts, no surprise invoice at the end.
Which FAAC Models This Applies To
The two FAAC families we replace most in Carrollton are the 400-series hydraulic swing operators (402, 412, 415, 422) and the C720/C721 electromechanical slide and swing models. There’s a practical difference that matters for replacement: the 400-series uses a hydraulic piston driven by an electric pump, while the C720 uses a direct-drive gearbox. The mounting footprint differs between them, so swapping within the same series is straightforward while crossing series (hydraulic to electromechanical) means drilling new plate holes and possibly revising the arm geometry.
Identifying your exact model is simple if the label is still readable: the model number sits on the housing near the terminal block or on the underside of the cover. If the label is gone, measure the piston stroke for a 400-series (392 and 415 models use different stroke lengths) or look at the capacitor rating on a C720. We walk every Carrollton customer through this on the phone before dispatch because it determines which motor we load on the truck. On the OEM-versus-aftermarket question for FAAC specifically, we’re direct about it: FAAC’s own capacitors and limit-switch assemblies are worth buying OEM because the tolerances are odd sizes, but quality aftermarket hydraulic seals and pistons perform comparably at roughly 60% of the OEM price. We’ll quote both with the tradeoffs in writing, and you pick.
Signs Your FAAC Gate Motor Replacement Is Failing

- Gate slows noticeably over a few weeks. On hydraulic 400-series units, this is usually the pump losing volume through worn internal seals. On C720s, it’s the capacitor losing microfarad capacity or the gearbox running dry. Either way, the motor is working harder and hotter than it should.
- Motor runs but gate doesn’t move, or moves in short jerks. On hydraulic units this often means the piston seal has blown and the pump is bypassing internally. You’ll usually find a sheen of oil at the piston rod. On electromechanical models, a stripped gear or failed limit switch produces the same symptom.
- Gate reverses mid-travel for no reason. In Carrollton’s summer heat, we regularly see FAAC boards derating and misreading the obstruction sensor (the encoder pulse). Before blaming the motor, we reset the board and recheck the safety edges, because the motor is often innocent here.
- Humming from the operator with no movement. This is the start capacitor failing (on C720s it’s a 15uF or 20uF run/start cap depending on the build year), or a seized pump on a 400-series that sat through a wet spring without movement. Don’t let it hum, because a locked rotor for more than a few seconds burns the winding.
- Visible oil under the operator or on the arm bracket. This is the clearest sign on hydraulic FAAC units: the piston seal has let go. It’s not repairable in the field as a permanent fix; it’s a motor unit replacement, which is exactly the job this page exists for.
Before
AfterReplacement Cost & What’s Included
For Carrollton residential gates, here’s the range breakdown we quote in writing before any work begins:
| Replacement Type | Installed Price Range (Carrollton) |
|---|---|
| FAAC 400-series hydraulic motor (OEM or quality aftermarket) | $1,400-$2,300 |
| FAAC C720/C721 electromechanical motor | $1,200-$1,900 |
| Full operator replacement (motor plus board and housing when age warrants) | $2,200-$2,600 |
| Arm bracket or mounting plate fabrication | $150-$350 added |
What drives the range is whether the existing mounting plate and arm bracket are reusable, and whether the board is original or already aftermarket. We don’t hide that. You get the motor, all labor, limit-switch setting, force adjustment, wiring check, and the full documented photo log. Our 365-Day Done Right Promise covers the work for one full year: if the repair isn’t right, we make it right, no argument and no fee. Every price above is the price you’re handed before a tool comes out, and the price on the invoice matches it.
DIY or Call Us?

There are things an owner can safely check. Confirm the breaker and outlet on the gate circuit are live. Look for obvious oil on the piston. Listen for the hum. Take a photo of the label. That’s about it. The moment you unbolt a hydraulic FAAC piston or open a C720 gearbox, you’re into work that can strip a hand, launch a tensioned arm bracket, or leave a gate unsecured because the safety edges were disconnected in the wrong order. These operators push several hundred pounds of force against the arm; a mis-sequenced removal can turn the arm into a lever you don’t want to be on the wrong side of. For those familiar with the room to work in: yes, the gearbox cap on early C720s is reverse-threaded, and no, the 400-series bleed screw does not go back in with Teflon tape tearing into the threads. If you’d rather not discover that yourself, call us at (817) 778-4585 and we’ll have a technician named and on the way, with the motor loaded, same day.
FAQs
In our experience across Carrollton’s hot, occasionally wet climate, a residential FAAC motor runs 7 to 12 years before replacement. The two killers here aren’t hours of use; they’re summer heat derating the board and capacitor, and spring rain finding a weak seal on the piston. Seal failure and capacitor death are the two we replace most.
A blown piston seal on a 400-series can be resealed, but in our honest assessment for a residential customer, it’s a band-aid: the reseal usually buys 12 to 18 months, at roughly two-thirds the cost of a new motor. We’ll quote both options and make a call with you based on the unit’s age and the condition of the board. For a C720, a stripped gear or burned winding is a replacement, not a repair. Call (817) 778-4585 to have us look at the specific failure.
Most FAAC residential motor replacements run 90 minutes to two hours on site. That includes setting the limit switch travel, adjusting the force, checking the safety edges, and leaving you with the photo log of the final settings. If the arm bracket or plate needs fabrication, that adds a day or two for our welder.
We keep 400-series hydraulic motors and C720/C721 electromechanical motors on our trucks, along with the OEM capacitors and limit-switch assemblies that go with them. For the odd FAAC slide operator outside those families, we source the unit same or next day through our Dallas-Fort Worth suppliers. Either way, call (817) 778-4585 and we’ll tell you before we head your way whether the motor for your exact model is on the truck.
Name what you found, name what it costs, name what you left behind. That’s the whole job, and we’ve done it on a lot of gates around Carrollton, including the older residential swing setups out near Arbor Hills Nature Preserve. If your FAAC operator is failing, call (817) 778-4585 for a free estimate, and we’ll put the written price in your hand before a single bolt comes out.
Written by Adrian Vance, Owner, Vance Gate Repair Carrollton at Vance Gate Repair Carrollton, serving Carrollton and nearby areas.





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