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Get your free estimateMedeco Locksmith in Altadena, CA | True Blue Locksmith
We provide independent Medeco locksmith service across Altadena and Medeco service in Pasadena, covering everything from rekeying and repair to new high-security installations on vintage doors. The one thing that makes our Medeco work here different: we spend as much time preserving irreplaceable pre-war hardware as we do installing modern cylinders. Noel Carrasco and our team work on Medeco Biaxial, M3, Maxum, and Original locks throughout the 91001 and 91003 ZIP codes. Call (877) 358-5506 for an honest assessment before you replace anything.
Why Altadena Residents Choose Us for Medeco Service
Medeco locks are precision instruments, not commodity hardware. We treat them that way. Our shop carries the specialized tools and genuine OEM parts needed to service Medeco’s sidebar mechanisms, restricted keyways, and high-security cylinders without compromising their pick-resistance or key control. Most locksmiths in the area can pick a Kwikset. Far fewer can properly diagnose a Medeco Biaxial with a sticky sidebar or rekey an M3 cylinder to match an existing key system.
Noel Carrasco picked up the trade at Cerritos College and has worked locks in the southeast LA County area for going on two decades. He got into this work partly because his father-in-law kept locking himself out of his shop on Carmenita Road, and partly because every call is a different puzzle. That mindset matters when you’re dealing with a high-security system retrofitted into a 1930s door that was never designed for it.
We’re an independent Medeco service provider. Not factory employees, not manufacturer-affiliated. That independence means our recommendations come from what your door and your security actually need, not from a sales quota. We’ll tell you when a repair makes sense and when a replacement is the honest call.
Styles & brands we work with







Common Medeco Locksmith Problems We Solve in Altadena
- Keys that stick or fail to turn smoothly. Medeco’s precision sidebar mechanisms don’t tolerate dust well. In Altadena, where Santa Ana winds push fine grit into everything, that dust mixes with factory grease and forms a paste that jams the sidebar. We disassemble, clean, and re-lubricate with dry-film PTFE so the key glides again.
- Heat-induced cylinder binding on sun-baked doors. South-facing entries in the Altadena foothills absorb direct sun for hours. Metal components expand, lubricants dry out, and the deadbolt seizes. This is one of the most common Medeco service calls we handle in the summer months.
- Deadbolt won’t extend even though the key turns. Often this isn’t a lock problem at all. It’s a door alignment issue, common in Altadena’s older homes where wooden frames have shifted over decades. We adjust the strike plate and realign the bolt rather than replacing a perfectly good cylinder.
- Retrofitted Medeco locks in vintage mortise pockets. Altadena’s pre-war homes frequently have solid-wood doors with original mortise lock pockets that are too shallow for modern high-security cylinders. Installing a Medeco deadbolt properly requires precise mortising and custom strike work to avoid splitting irreplaceable wood.
- Worn key control features. Medeco’s restricted keyways are a security feature, but they also mean every duplication goes through a controlled process. When keys wear from years in a dusty environment, we cut new ones to factory spec and verify the sidebar engagement before we leave.
Medeco Service in Altadena: What Local Conditions Mean for Your Equipment
Here’s a specific fact about Altadena that shapes Medeco work in ways you won’t find even with Medeco in La Cañada Flintridge. Many homes in the foothills, particularly along streets like Midwick Drive and the older sections near Lake Avenue, still have their original solid-wood front doors from the 1920s and 1930s. Those doors were built for skeleton-key mortise locks, not modern high-security cylinders. When a homeowner wants to upgrade to a Medeco Maxum or M3, that vintage mortise pocket is often too shallow. Forcing the cylinder in means deepening the pocket, and doing that wrong splits decades-old wood that can’t be replaced.
We recently serviced a Medeco Maxum deadbolt on a 1920s Craftsman near Eaton Canyon. The homeowner’s key had become nearly impossible to turn after a summer of heat and dust. Our tech disassembled the cylinder, cleaned out compacted grit, replaced the sidebar springs with OEM parts, and re-lubricated with a dry-film PTFE spray. Smooth operation returned without altering the door’s original mortise. Then we adjusted the strike plate to reduce binding and recommended an annual service to keep the lock reliable through fire season. That kind of surgical approach is what vintage Altadena doors demand, and it’s what we deliver.
For Medeco-specific work and full Medeco sales & service coverage, our team knows which repairs preserve a lock’s high-security rating and which shortcuts quietly void it.
Medeco Models & Products We Service in Altadena
We service the full Medeco residential and light-commercial line: the original Medeco, Biaxial, M3, and the newer Maxum platform. Since we cover all of Altadena service area, we keep OEM cylinders, sidebar springs, and repair kits stocked for the models most common in local homes. When a part is obsolete and OEM is no longer available, we source quality aftermarket components, but we’ll always tell you which is going into your lock and why. Sub-services we emphasize for Medeco systems: high security locks, lock rekey, and door reinforcement to address the frame and strike-plate issues that Altadena’s older construction throws at us.
Medeco Service Pricing in Altadena
Medeco service runs higher than standard lock work because the parts and labor are genuinely different. What you’re paying for is precision: OEM cylinders, factory-spec key cutting, and a tech who understands sidebar mechanisms rather than someone learning on your front door. Here’s what Medeco work typically costs in Altadena:
- Medeco rekey (labor + new keys): $35 – $75 per cylinder, depending on model and keyway
- Medeco cylinder replacement with OEM parts: $120 – $250 per cylinder
- Medeco deadbolt installation on a standard door: $180 – $350 including hardware
- Vintage door retrofit with custom mortising: $300 – $550 depending on door condition and pocket depth
- Cleaning, lubrication, and adjustment service: $65 – $110 per lock
The price you’re quoted on the phone is the price on your invoice. No call-out surcharge added on arrival, no bait pricing. Call (877) 358-5506 for a free estimate based on your specific lock and door. We’ll walk through what you have and tell you straight what it costs.
Serving Altadena, CA — Our Local Coverage Area
We’re based in the Altadena area and know this community well, and we also offer Medeco repair in East Pasadena. Use the map below to see our service coverage — if you’re nearby, we can almost certainly help.
FAQs – Medeco Locksmith in Altadena
Yes, we can rekey most Medeco cylinders to match your existing Medeco key, provided the keyway is compatible. Medeco’s restricted key system means the key blank must match the cylinder’s keyway profile, so if you’re trying to consolidate keys across different Medeco models, we’ll verify compatibility before cutting anything. If the cylinder itself is worn or the sidebar is damaged, a new OEM cylinder makes more sense. Call (877) 358-5506 and we’ll tell you which applies to your situation.
Usually it’s a door problem. In Altadena’s older homes, wooden frames shift over decades, and the strike plate drifts out of alignment with the bolt. The key turns fine because the cylinder is working, but the bolt binds against the strike or the door edge. We adjust or replace the strike, realign the bolt, and confirm the cylinder is healthy before declaring anything broken. It’s a common fix, and we handle it regularly in the foothills neighborhoods.
We keep OEM Medeco cylinders, sidebar springs, and key blanks in stock for the models most common in Altadena homes. Most rekeys and repairs happen same-visit. If you have an obsolete model that requires a specialized part, we’ll source it and give you a straight timeline before any work starts. You won’t wait on a guess.
Yes, if the installation is done correctly. Altadena’s pre-war doors have mortise pockets that are often too shallow for a modern Medeco cylinder, so the retrofit requires precise mortising and custom strike work. Done wrong, you split the wood and ruin a door you can’t replace. Done right, you keep the original door and gain high-security protection. We’ve done this on dozens of 1920s and 1930s doors in the area, and we’ll tell you honestly whether your specific door is a candidate.
Wildfire season brings heat, wind, and dust, and all three work against exterior locks. High temperatures cause metal expansion and binding. Santa Ana winds drive fine dust into the cylinder, where it mixes with lubricant and jams the sidebar. We recommend an annual cleaning and re-lubrication with dry-film PTFE before fire season hits, which keeps your Medeco operating smoothly when you need it most. Call (877) 358-5506 to schedule preventive service for your locks.
Service Areas Near Altadena
We run Medeco service calls throughout the northeast Los Angeles foothills and into the surrounding communities. Our coverage is compact enough that the same tech who works on your Altadena home likely handles repeat calls in Pasadena, La Cañada Flintridge, Sierra Madre, and South Pasadena. For Medeco work further south, see our Medeco service in Colton or check Medeco service in Temecula coverage for Inland Empire work.
Book Your Medeco Service in Altadena Today
Need a Medeco rekey, repair, or new installation in Altadena or Medeco service in San Marino? Call (877) 358-5506 and speak directly with our team, not a call center. We’ll give you an honest quote on the phone, schedule a time that works, and show up with the right parts and the right tools. Honest work, solid locks – that’s the whole job.
Written by Noel Carrasco, Owner at True Blue Locksmith, serving Altadena and surrounding foothill communities.