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Get your free estimateMedeco Locksmith in Pacifica, CA | Citadel Locksmith
We provide independent Medeco locksmith service throughout Pacifica, and the one thing that sets our work apart here is that we actually understand what salt fog does to a high-security cylinder. Medeco locks are built to tighter tolerances than anything else you’ll find on a residential door, which means Pacifica’s marine air punishes them differently than it would a standard deadbolt. If your Medeco Maxum is seized, stiff, or eating keys, call us at (833) 589-8078 and we’ll tell you exactly what’s going on before anyone gets in a truck.
Why Pacifica Residents Choose Us for Medeco Service
Medeco isn’t a lock you learn on the fly. The rotating pins, the sidebar, the angled cuts on the key – these are systems that punish a technician who treats them like a Kwikset. We stock Medeco-specific key blanks, pin kits, and cylinder tools, and our bench time with the M3, Biaxial, and Maxum lines is the reason we can diagnose a seized Medeco over the phone before we even arrive. Medeco sales & service is a core part of what Citadel Locksmith does, not a side note.
Roland Vásquez, our owner, grew up in the Excelsior District and learned locksmithing through the program at City College of San Francisco, where the mechanical fundamentals of pinning and sidebar alignment were drilled into him before he ever touched a customer’s door. He’s spent nearly three decades working locks that other techs walk away from, and he’ll tell you a seized Medeco cylinder takes the same patience as diagnosing a stubborn youth soccer defense – something he also knows from weekends at Balboa Park. We bring that level of care to every Pacifica job, whether it’s a rekey of an M3 cylinder or a Maxum deadbolt that hasn’t turned freely in months. We’re an independent shop, not a manufacturer affiliate, and that independence means we recommend what actually works for your door, not what a corporate program tells us to push.
Styles & brands we work with







Common Medeco Locksmith Problems We Solve in Pacifica
Medeco hardware fails in specific ways, and Pacifica’s climate accelerates several of them. Here’s what we see week after week:
- Frozen sidebar and rotating pins from salt-fog moisture. Medeco’s tight-tolerance cylinder binds long before a cheap deadbolt would, so a foggy Linda Mar morning often produces a key that goes in but won’t turn at all. We disassemble, clean, re-pin, and re-lubricate with a marine-grade lubricant that holds up to coastal air.
- Corroded brass cylinder housings on older wood doors. Pacifica’s 1940s-1970s homes often have original front doors with prep that lets salty air pool around the bolt and cylinder. We see hardened strike plates and green corrosion on brass housings within a few blocks of the beach, and we replace what’s pitted while preserving the Medeco core if it’s still sound.
- Worn or incorrectly duplicated Medeco keys. A Medeco key cut on the wrong blank – or copied at a hardware store that doesn’t understand the angled cuts – will chew up the sidebar and cause intermittent no-turns. We cut keys from genuine Medeco blanks and verify them against your cylinder before we leave.
- Seized Maxum deadbolt bolts and thumbturns. This is the one people mistake for a broken lock. The bolt corrodes in the strike keep, and the thumbturn feels frozen. Nine times out of ten it’s not the lock body – it’s corrosion where the bolt meets the striker. We free it, lubricate it, and often upgrade the strike plate to a coastal-grade steel that won’t pit the same way.
- Rekey after a tenant turnover or key loss on a Medeco cylinder. You don’t need to replace a $200-plus deadbolt because one key went missing. We re-pin the cylinder to new keys, preserving the sidebar and keyway that make it a Medeco in the first place.
Medeco Service in Pacifica: What Local Conditions Mean for Your Equipment
Pacifica’s housing stock is dominated by single-family homes built between the 1940s and 1970s, and most of them still have their original wood front doors with older knob and backset prep. That matters more than people realize when you’re installing a Medeco high-security cylinder. The door prep on a 1960s ranch in Pacifica wasn’t machined for a modern high-security deadbolt’s bolt throw and cylinder depth, which means the backset and strike alignment have to be addressed before the Medeco even goes in. Put a tight-tolerance cylinder into a door that’s slightly out of square – common after five decades of coastal humidity swelling and shrinking the wood – and you’ll get binding, premature wear, and a key that struggles to turn even on a clear day. A homeowner near Linda Mar called us because her Medeco Maxum deadbolt had frozen solid on a foggy morning: key in, bolt wouldn’t budge. Our tech found the bolt corroded in the strike keep and the sidebar sluggish from marine moisture. We freed and lubricated the bolt, re-pinned the Medeco cylinder to a fresh key, and replaced the pitted steel strike plate with a coastal-grade one. The lock itself was fine. The install prep around it wasn’t. That’s the difference between swapping hardware and actually fixing the problem in Pacifica’s salt-heavy air.
Medeco Models & Products We Service in Pacifica
We service the full Medeco residential and light-commercial range, including the Maxum deadbolt, the M3 cylinder with its patented keyway, the Maxum 11TR and 11WC residential deadbolts, and the older Original and Biaxial cylinders still found on many Pacifica homes built in the 60s and 70s. When the patented sidebar and keyway need to stay intact, we use genuine Medeco cylinders, keys, and pin kits – there’s no shortcut that preserves the security profile. Where the brand doesn’t matter, like strike plates and reinforcement hardware, we use quality aftermarket parts that hold up better in marine air. We stock the common Medeco blanks and pin depths locally, which means most Pacifica rekeys and repairs happen same-day without waiting on a distributor shipment.
Medeco Service Pricing in Pacifica
Medeco service in Pacifica generally runs $140 to $340 depending on what’s needed: a standard rekey of a Medeco cylinder starts around $140, full deadbolt replacement with a Maxum runs $280 to $340 installed, and a cleaning-and-repin service to free a seized cylinder falls in the $120 to $180 range. Corroded strike plate replacement and door prep correction add to the total when the original install was never right. What drives the cost is whether the cylinder is salvageable or the housing is pitted through, and whether the door prep needs correction. We quote the full price on the phone before anyone is dispatched, and that’s the price on the invoice – no call-out surcharge added when we arrive. Call (833) 589-8078 for an exact quote on your Medeco. The estimate is free, and we’ll tell you honestly if your cylinder is worth saving or not.
Serving Pacifica, CA — Our Local Coverage Area
We’re based in the Pacifica area and know this community well, and we also provide Medeco service in South San Francisco. Use the map below to see our service coverage — if you’re nearby, we can almost certainly help.
FAQs – Medeco Locksmith in Pacifica
Will my Medeco Maxum deadbolt survive Pacifica’s salt fog?
Yes, with the right maintenance. The Maxum’s brass and steel components will corrode faster in Pacifica’s marine air than they would inland, so you need annual lubrication with a marine-grade product and a strike plate that isn’t pitted steel. If the original install used a cheap striker, the bolt will seize in the keep long before the lock body fails. We inspect and lubricate Medeco hardware during every service call in Pacifica so small corrosion never becomes a lockout.
Can you rekey a Medeco lock without replacing the whole deadbolt?
Yes. Rekeying a Medeco cylinder preserves the sidebar, the keyway, and the housing while changing the pin depths so old keys no longer operate. It’s the most cost-effective way to take back control of who holds a key to your Pacifica home, and it’s done on-site in under an hour in most cases. Call (833) 589-8078 and we’ll confirm your Medeco model and quote the rekey flat before we dispatch.
My Medeco key turns hard only on foggy mornings – what’s happening?
That’s moisture swelling the wood door and salt residue binding the cylinder’s rotating pins and sidebar. Medeco’s tight tolerances mean you feel the friction before a standard lock would show any symptom at all. The fix is a full cylinder cleaning, re-lubrication, and often a door prep adjustment so the bolt isn’t dragging on the strike. If you wait, a foggy morning turns into a frozen lock. Call us at (833) 589-8078 – we’ll tell you over the phone whether it sounds like an adjustment or a full service.
Do you carry Medeco key blanks for older Biaxial or Original cylinders?
We do. Original and Biaxial Medeco cylinders are still on plenty of Pacifica doors, and the key blanks for those older models aren’t the same as the M3 or Maxum lines. We stock genuine Medeco blanks for all four families and cut them precisely against your existing cylinder, which matters because a key cut on the wrong blank will chew up the sidebar over time.
Is a Medeco high-security cylinder worth it on an older Pacifica door?
Yes, with one caveat: the door has to be prepped correctly or the high-security cylinder won’t perform. On a 1960s wood door with original backset and no reinforcement, we’ll correct the prep and install a proper strike plate at the same time. A Medeco on a solid install is one of the hardest residential locks to defeat, and in Pacifica’s older housing stock, that upgrade combined with a rekey is often the single biggest security improvement you can make.
Service Areas Near Pacifica
We serve all of Pacifica service area, including the Linda Mar, Sharp Park, and Fairway neighborhoods. We also run calls to nearby communities along the coast and over the hill. If you’re in Medeco service in Richmond or Medeco service in Corte Madera, our techs cover those areas as well. Call to confirm same-day availability in your neighborhood.
Book Your Medeco Service in Pacifica Today
If your Medeco is stiff, seized, or needs rekeying, call us now at (833) 589-8078. We’ll diagnose the issue, quote a firm price, and get a tech to your Pacifica home same-day in most cases. The estimate is free, and you’ll know the full cost before we dispatch.
Written by Roland Vásquez, Owner at Citadel Locksmith, serving Pacifica, Medeco repair in San Bruno, and the surrounding Bay Area.