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Get your free estimateMedeco Locksmith in Sierra Madre, CA | True Blue Locksmith
We provide independent Medeco locksmith service across Sierra Madre, CA, and Medeco repair in Monrovia, from rekeying restricted keyways to fitting high-security deadbolts into century-old doors. The work here is different because Sierra Madre’s housing stock runs early-1900s to mid-century, so Medeco hardware frequently has to be matched to original mortise pockets and solid-wood frames rather than drilled into modern pre-hung doors. Call True Blue Locksmith at (877) 358-5506 for an honest quote before anyone is dispatched, and the price we quote is the price on your invoice.
Why Sierra Madre Residents Choose Us for Medeco Service
Medeco is not a lock you hand to whoever answers the phone. It’s a high-security system with hardened pins, sidebar mechanisms, and restricted keyways that demand specific tools and training. Most residential locksmiths see a Medeco cylinder and back away. We service them daily. Our techs carry Medeco-specific pinning kits, sidebar tools, and OEM parts because that’s what Sierra Madre calls for, not a sideline we picked up last spring. Noel Carrasco, our owner, came up through the Cerritos College vocational program and has worked locks in southeast LA County for going on two decades. He’s been straight with people about what they need and what they don’t, and that’s how we run every Medeco job. If you’re in the 91024 or 91025 ZIP codes, we know what your doors look like before we arrive. We’re the independent shop specializing in Medeco sales & service, not a manufacturer affiliate.
Styles & brands we work with







Common Medeco Locksmith Problems We Solve in Sierra Madre
Dry foothill air, Santa Ana winds, and vintage door construction create specific failure patterns. Here’s what we see on Medeco hardware in Sierra Madre:
- Hardened pins and sidebar springs seizing from dust and dry air. Santa Ana wind events push fine grit into exterior cylinders, and the MicroTex steel pins in Medeco cylinders don’t tolerate debris. Lack of lubrication plus that dust means the key stops turning smoothly or the sidebar won’t retract. We disassemble, clean, lubricate, and re-pin with OEM parts.
- Original Medeco cylinders in vintage mortise locks wearing at the tailpiece and cam. Homes built in the 1920s through 1940s often had Medeco cylinders retrofitted into original mortise lock bodies decades ago. The tailpiece and cam wear against the mortise case, so the bolt throws sluggishly or not at all even with a good key. We rebuild the cylinder and match OEM components to the existing lock body rather than replacing the antique hardware.
- Restricted keyways with lost keys and no key card. Medeco restricted systems require a key card for duplication. When that card is gone and so is the last key, a simple re-pin won’t work. We do a full cylinder replacement and issue fresh restricted keys, documenting the new keyway so you’re never locked out of your own system again.
- Door sag and frame shrinkage misaligning the strike. Dry summers shrink wood doors and frames across Sierra Madre. Your Medeco deadbolt binds because the bolt no longer lines up with the strike, not because the cylinder failed. We adjust hinges, re-mortise the strike, and realign everything so the deadbolt throws clean with one hand.
- Shallow mortise pockets too tight for modern Medeco deadbolts. On pre-1950 homes, the original mortise pocket is often too shallow for a Medeco Maxum deadbolt. Forcing it in splits the door. We route precision mortises and build custom strike work to fit the high-security cylinder without damaging irreplaceable wood.
Medeco Service in Sierra Madre: What Local Conditions Mean for Your Equipment
The single biggest factor shaping Medeco work in Sierra Madre is the housing stock itself. Walk the blocks near the village center and you’ll see Craftsman bungalows, English Cottages, and Spanish Revival homes with thick solid-wood doors that have been standing since before Medeco existed as a company. Those doors were built for mortise locks and skeleton keys, not modern high-security cylinders. When a homeowner wants a Medeco Maxum deadbolt on a 1920s Craftsman front door, the job is not a drill-and-install. It’s a restoration task: the original mortise pocket has to be measured, often deepened with a precision mortiser, and the strike plate re-mortised so the bolt throws without binding. Skip that work and the deadbolt either won’t lock or will split the stile of a door you cannot replace. We’ve done this on older blocks throughout 91024 and 91025, and we also provide Medeco service in Mayflower Village. It’s the reason generic Medeco instructions don’t apply here. In neighboring cities with 1980s tract housing, you drill a hole and hang the lock. In Sierra Madre, you match the security hardware to a door that’s earned its place.
Medeco Models & Products We Service in Sierra Madre
We service the full Medeco line that shows up in Sierra Madre homes and storefronts: the Medeco Maxum deadbolt, M3 and M4 cylinders, the original Medeco3 high-security cylinders, and KeyMark restricted-keyway cylinders. Our approach on parts is simple: OEM Medeco pins, springs, and cylinders whenever possible, because aftermarket parts compromise the restricted keyway and void warranty coverage. For vintage mortise retrofits, we match an OEM Medeco cylinder to the existing lock body instead of replacing a perfectly serviceable antique. We repair Medeco cylinders when the body is sound. We recommend replacement only when the sidebar or pin chambers are worn beyond safe tolerances. That’s honest work.
Medeco Service Pricing in Sierra Madre
Medeco service in Sierra Madre generally falls into these ranges, and we’ll confirm the exact number before anyone gets in the truck:
- Medeco rekey or re-pin: $85 – $160 per cylinder depending on keyway and condition.
- Medeco cylinder replacement: $185 – $310 per cylinder, including new restricted keys.
- Medeco Maxum deadbolt installation on a standard prepared door: $240 – $390.
- Medeco Maxum deadbolt with vintage mortise retrofitting: $340 – $580, depending on door condition and required strike work.
- Master-key setup for multi-building properties: Quoted per property after a site check.
What you get with a free estimate: we check the door, the frame, the existing hardware, and the mortise pocket before we quote. The price we give you on the phone is the price on the invoice. No call-out surcharge added when the tech arrives. Call (877) 358-5506 and we’ll talk through your specific door and hardware.
Serving Sierra Madre, CA — Our Local Coverage Area
We’re based in the Sierra Madre area and know this community well, and we also provide Medeco service in Arcadia and nearby communities. Use the map below to see our full service coverage — if you’re nearby, we can almost certainly help.
FAQs – Medeco Locksmith in Sierra Madre
Yes, we rekey Medeco cylinders on vintage mortise doors in Sierra Madre without harming the original mortise body. We remove the Medeco cylinder from the mortise case, re-pin it with OEM pins on the bench, and reinstall it. The mortise lock body stays untouched. If the mortise itself is damaged or the pocket needs enlarging for a deeper high-security cylinder, we precision-route with hand tools and a template, not a freehand drill. The door survives. Call (877) 358-5506 for a free estimate on your specific door.
If the key card exists, we can cut and program a new restricted Medeco key. If the key card is gone and the key is lost, re-pinning is not possible under the restricted system rules, so we replace the cylinder and issue a fresh keyway with new key cards. That’s the reality of Medeco’s security design: the restriction is the point. Call (877) 358-5506 and we’ll sort out which path applies to your lock.
Summer in Sierra Madre means hot, dry air and often Santa Ana winds, which shrink solid-wood doors and frames. The strike plate moves slightly relative to the deadbolt, so the bolt binds when you try to throw or retract it. The Medeco cylinder is usually fine. We fix this by adjusting hinges, realigning or re-mortising the strike plate, and re-lubricating the cylinder with a dry-film lubricant that handles dust. For an exact diagnosis, call (877) 358-5506.
Yes. The vintage glass-panel commercial doors along Sierra Madre Boulevard often carry mortise locks with non-standard dimensions. We stock Medeco mortise cylinders in multiple lengths and can match OEM cylinders to those existing lock bodies rather than replacing the whole assembly. Period-correct hardware keeps the door’s character intact while upgrading the security core.
Yes, we design and install master-key systems on Medeco KeyMark or M4 cylinders for properties with a main house, guest house, garage, and outbuildings. We key each door individually, cut master keys for you, and issue restricted key cards so no one can duplicate keys at a hardware store. The process starts with a site walk-through and a written scope. Call (877) 358-5506 and we’ll set a time to look at the property.
Service Areas Near Sierra Madre
Beyond Sierra Madre, we run Medeco service across the wider Los Angeles area and down into Orange County. If you’re in Irvine or the surrounding communities, you can read about our Medeco service in Irvine. We also cover the Inland Empire, including Medeco service in Mentone. And our Sierra Madre service area page lists every ZIP and neighborhood we cover locally. If you’re not sure whether we reach your address, call (877) 358-5506 and ask.
Book Your Medeco Service in Sierra Madre Today
We handle Medeco rekeys, cylinder replacements, deadbolt installs, and master-key systems across Sierra Madre and offer Medeco repair in East Pasadena, including same-day service when the schedule allows. Call (877) 358-5506 for a free estimate. The price we quote is the price you pay. On a Craftsman bungalow near the village center in Sierra Madre, a homeowner called us because her original Medeco deadbolt would not turn. Our tech found the door had sagged from decades of dry summers, misaligning the strike and binding the Medeco Maxum bolt. We adjusted the hinges, re-mortised the strike plate, and re-pinned the Medeco cylinder to a fresh restricted keyway, restoring smooth operation without replacing the vintage door. Honest work, solid locks – that’s the whole job.
Written by Noel Carrasco, Owner at True Blue Locksmith, serving Sierra Madre since he first picked up a pinning kit.