Non-destructive entry first, always - and we re-key Schlage, Kwikset, and Baldwin locks on the spot while you watch
You get a price before we start. It does not change when we arrive. No surprises.
Medeco Locksmith in Chicago, IL | Novak Lock & Security Chicago
We provide independent Medeco service across Chicago, from greystone two-flats in Logan Square to courtyard buildings in Woodlawn. The one thing that makes our Medeco work here different: we stock genuine OEM pins, springs, and cams for Medeco’s restricted keyways, and we know how Chicago’s pre-1945 mortise hardware and polar vortex cycles stress these cylinders differently than new-construction installations. Call (331) 202-1318 for a written estimate before any work starts.
Why Chicago Residents Choose Us for Medeco Service
Daniel Novak has been running service calls across Chicago long enough to know which hardware holds up to a Midwest winter and which does not. He grew up in Culver City, California, picked up trade fundamentals at West Los Angeles College, and has spent decades working locks full-time - from Commercial Locksmith - Chicago jobs at Logan Square storefronts to loading docks off the Merchandise Mart. The name is on the van. The work is the argument.
We’re not authorized or endorsed by Medeco. We’re independent locksmiths who have serviced Medeco cylinders across Chicago’s older housing for years, stocking the specific drivers, pins, and key-cutting equipment Medeco’s restricted keyways demand. Our technicians are background-checked, uniformed, and work to The Haven Standard - the same documented quality framework applied across all ten Haven brands. Every visit includes a documented photo record left with the customer. Calls are answered by a live person, 24/7.
Haven Standard Clause 1: the price on the phone is the price on the invoice. No exceptions since 2002.
Common Medeco Locksmith Problems We Solve in Chicago
- Frozen pin stacks in polar vortex conditions. Chicago’s January cold snaps routinely hit -15°F or lower. When a previous technician used graphite or degraded silicone lubricant inside a Medeco cylinder, condensation freezes solid and seizes the pin stack. Our techs clear the ice, re-lubricate with cold-rated lock lubricant, and confirm sidebar travel before handing back the key.
- Keyway wear in 80-year-old mortise locksets. Medeco Biaxial and M3 cylinders mounted in original Corbin or Yale mortise hardware across Chicago’s greystone and common-brick buildings face pin binding from decades of paint layers, frame settlement, and patch repairs. We rebuild with genuine OEM pins rather than forcing a worn cylinder to limp along.
- Restricted-keyway duplication dead-ends. Building owners call us when a hardware store refuses to copy their Medeco KeyMark or M3 key - not realizing the keyway is patent-restricted. We verify authorization and cut on Medeco-compatible equipment, or we rekey to a new restricted keyway if the original authorization chain is broken.
- Seasonal door swell throwing off cylinder alignment. Solid-wood doors common in Chicago’s two-flats and three-flats swell tight in summer humidity and gap in winter dryness. That twice-yearly cycle stresses the Medeco cylinder cam and can shear a tailpiece. We diagnose whether the cylinder, the door prep, or the strike alignment is the actual fault.
- RLTO rekey deadlines on aging mortise hardware. Chicago’s Residential Landlord and Tenant Ordinance requires rekeying between tenants. Many small landlords in Pilsen or Avondale discover their building’s Medeco cylinder is frozen or worn only when the turnover clock is ticking. We rekey on deadline, in writing, with OEM parts.
Medeco Service in Chicago: What Local Conditions Mean for Your Equipment
Residential Locksmith - Chicago calls often involve the city’s vast stock of pre-WWII two-flats, three-flats, and courtyard apartment buildings - concentrated across neighborhoods from Logan Square to Bridgeport to Woodlawn - means a huge share of locksmith calls involve original mortise locksets that suburban or Sun Belt technicians rarely touch. Layered on top, the Chicago Residential Landlord and Tenant Ordinance creates a steady legal obligation for small landlords to rekey units between tenants, making rekeying of aging mortise hardware a recurring, city-specific revenue stream. For Medeco owners, this combination matters: a Medeco Biaxial or KeyMark cylinder installed in a 1920s mortise lockset on a Chicago common-brick door frame has different failure modes than the same cylinder in a modern bored-lock installation. The frame has settled. The door has been planed and repainted. The strike plate has migrated an eighth of an inch. Our technicians account for all of it before touching a pin.
In Logan Square, a two-flat owner had an original mortise lock on the entry door fitted with a Medeco Biaxial cylinder that seized solid during a February cold snap - the tenant was locked out and the key wouldn’t turn. Our tech cleared the frozen pin stack, re-lubricated with a cold-rated lock lubricant, confirmed the sidebar travel, and then rekeyed the cylinder to the owner’s new tenant key under their RLTO turnover. We left the Medeco housing in place rather than replacing it, because the cylinder body was still sound after 20-plus Chicago winters.
Medeco Models & Products We Service in Chicago
We service the full Medeco line found in Chicago’s residential and small-commercial buildings:
- Medeco Biaxial - classic high-security cylinder, common in older Chicago two-flats and small commercial buildings; we stock OEM drivers and sidebar springs for rebuilds
- Medeco Maxum deadbolt - deadbolt line we see on upgraded residential doors; available in single- and double-cylinder configurations
- Medeco KeyMark - restricted-keyway cylinder often on apartment and courtyard building entry doors; requires authorization verification for key duplication
- Medeco M3 - higher-security platform seen on some small commercial and mixed-use doors; we stock OEM pin kits and sidebar components
We stock genuine Medeco OEM pins, springs, and cams so the restricted keyway and security ratings stay intact. Aftermarket pins can compromise the sidebar tolerances these cylinders rely on. When a Medeco cylinder is worn but the housing is sound, we rebuild it. When the sidebar or keyway itself is damaged, we recommend full replacement. Our Medeco sales & service inventory is kept current for Chicago turnaround times.
Medeco Service Pricing in Chicago
Lock rekey typically runs $25-$45 per cylinder, quoted in writing before we start. Medeco high-security rekeying runs $45-$85 per cylinder due to the restricted keyway and sidebar components. Lock change or installation ranges $125-$275 depending on door prep condition and whether the existing mortise hardware can be retained. Emergency service during Chicago’s winter lockout spikes carries a flat trip charge, never a percentage markup.
Every quote is the full price. There is no call-out surcharge added on arrival. The dispatcher quotes a firm price, and the technician is contractually prohibited from changing it at the door - Haven Standard Clause 1, in place since 2002. We also offer a free second opinion on any competitor’s written estimate.
Call (331) 202-1318 for an exact quote - estimates are free, and the price you hear is the price on the invoice.
Serving Chicago, IL - Our Local Coverage Area
We’re based in the Chicago area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs - Medeco Locksmith in Chicago
We can cut Medeco restricted keys on Medeco-compatible equipment, but we first verify you hold valid authorization for that keyway - Medeco’s patent restrictions mean unauthorized duplication compromises the building’s key control. Bring your authorization card or property management documentation. If the authorization chain is broken, we can rekey to a new restricted keyway with fresh documentation. Call (331) 202-1318 and we’ll walk through what paperwork you need.
It’s usually both. Chicago’s polar vortex events push temperatures to -15°F or lower, and if the previous lubricant was graphite or degraded silicone, condensation inside the mechanism freezes solid. The cylinder isn’t necessarily failing - the pin stack is seized. Our techs clear the freeze, re-lubricate with cold-rated lock lubricant, and test sidebar travel. If the cylinder itself is worn from years of seasonal stress, we’ll tell you before doing anything beyond the service call. Call (331) 202-1318 for a written estimate.
Yes. We rekey Medeco Biaxial, KeyMark, and M3 cylinders in original mortise locksets regularly - it’s a significant share of our Chicago work. These installations require different tools and pinning techniques than modern bored locks, and the door frame condition (settlement, paint buildup, strike migration) affects how the cylinder seats. We account for all of it in the written scope before starting.
Eventually, yes. The twice-yearly cycle throws off bolt alignment and stresses the cylinder cam. We’ve sheared tailpieces on Medeco Maxum deadbolts where the door swell was ignored for multiple seasons. We diagnose whether the fix is strike adjustment, door prep correction, or cylinder replacement - and we quote all three possibilities in writing before touching a tool.
Rekey, if the cylinder body and sidebar are sound. Chicago’s RLTO requires rekeying between tenants, not replacement, and a Medeco KeyMark in good condition retains its security rating when properly rekeyed with OEM parts. We inspect for keyway wear, sidebar damage, and housing cracks first. If replacement is genuinely needed, we quote it - but we don’t sell unnecessary hardware. Call (331) 202-1318 to schedule before your RLTO deadline.
Service Areas Near Chicago
We serve the full Chicago service area and surrounding communities. Our technicians regularly handle Medeco calls in Medeco service in Cicero, Medeco service in Berwyn, Oak Park, Oak Lawn, and Hinsdale. The same written-price rule, OEM parts policy, and documented photo record apply in every location.
Book Your Medeco Service in Chicago Today
Call (331) 202-1318 to speak with a live dispatcher, 24/7. We’ll quote a firm price before anyone is dispatched, and that price is contractually guaranteed on the invoice. Same-day service is available for most Chicago locations, including RLTO rekey deadlines and winter lockout emergencies.
Written by Daniel Novak, Owner at Novak Lock & Security, serving Chicago since 2002.