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 Berwyn, IL | Novak Lock & Security Chicago
Our Commercial Locksmith - Berwyn Medeco service typically runs $180-$420 depending on whether you need a rekey, cylinder rebuild, or full mortise retrofit, and we stock restricted key blanks for same-day completion on most calls. What sets our Medeco work apart in Berwyn is the two-flat reality - we regularly service separate restricted-keyway systems on the same building, keeping owner and tenant keys distinct while preserving master access. Call (331) 202-1318 for a written quote before anyone is dispatched.
We are an independent shop, not authorized or endorsed by Medeco. We know these locks because we work on them weekly across Chicago’s bungalow belt, from Berwyn’s 1920s brick two-flats to the mortise pockets of Oak Park frame houses. Daniel Novak has been running service calls long enough to identify a worn Biaxial cam by feel, and our crew carries OEM Medeco cylinders and aftermarket replacements for obsolete lines alike.
Why Berwyn Residents Choose Us for Medeco Service
Berwyn’s housing stock demands a locksmith who speaks both high-security cylinder language and antique mortise hardware. We do. Our Medeco sales & service covers everything from a frozen Maxum deadbolt on a 1930s bungalow to a full restricted-keyway rekey of a two-flat’s separate suites.
Daniel Novak picked up his trade fundamentals at West Los Angeles College before decades of full-time lock work across Chicago. He built this business on one rule: the name on the invoice should mean something. That’s Haven Standard Clause 1 - the price we quote on the phone is the price on the invoice, and the technician is contractually prohibited from changing it at your door. We’ve operated this way since 2002. The name is on the van. The work is the argument.
Every visit sends a background-checked, uniformed technician with a documented photo record left with you at completion. Calls are answered by a live person, 24/7. No voicemail queue. No callback window.
Common Medeco Locksmith Problems We Solve in Berwyn

- Freeze-thaw bolt binding on Medeco Maxum deadbolts. Berwyn’s 1920s-1940s wood door stiles swell each winter as freeze-thaw cycles hit. The Maxum’s 1-inch throw bolt drifts out of alignment with original cast-iron strike plates. Key turns partway. Bolt jams. We file and reposition the strike, then check cylinder timing so the key still retracts cleanly when spring comes.
- Worn cam and tailpiece on Medeco Original / Biaxial cylinders. Decades of heavy two-flat traffic grind down the hardened steel cam. Cylinder spins. Bolt doesn’t retract. We see this constantly in Berwyn owner-occupied buildings where the front door sees double the use of a single-family entry. We stock replacement cams and can rebuild or replace depending on wear.
- Moisture and grit in restricted keyways. Berwyn’s older masonry walls hold humidity. Medeco’s tight-tolerance pin chambers collect fine debris. Key won’t seat fully. Pins don’t lift to shear line. We flush and lubricate with Medeco-specified compounds, then cut new restricted keys from blanks we stock for same-day turnaround.
- Stripped mounting screws in antique mortise pockets. Medeco retrofit cylinders sometimes get forced into original mortise bodies with mismatched thread patterns. Cylinder loosens. Key torque goes to the housing instead of the bolt. Intermittent lockouts follow. We re-tap or sleeve the mounting holes, or recommend a period-appropriate replacement when the pocket is too far gone.
- Landlord-tenant key separation on shared buildings. Berwyn’s two-flat density means one building, two separate key systems. We rekey so the tenant’s Medeco key opens only their suite, while the owner’s master still accesses both. This is routine work for us. It’s rare in Naperville.
Medeco Service in Berwyn: What Local Conditions Mean for Your Equipment
Berwyn’s two-flat density creates a locksmithing problem you won’t find in Schaumburg or Orland Park. A single service call on the 3100 block of Wenonah Avenue, or along Cermak Road’s rental corridor, often requires servicing two completely separate Medeco restricted-keyway systems on the same building. The owner-occupied first floor keeps their Medeco Maxum or KeyMark cylinder. The upstairs rental keeps a separate key. Both need rekeying after a tenant turnover. Both must remain distinct. And the owner typically wants a master key that overrides both.
We got a call from a Berwyn two-flat owner on the 3100 block of Wenonah Avenue whose upstairs tenant’s Medeco Maxum deadbolt had stopped turning all the way - the wood door stile had swelled from the freeze-thaw cycle and the bolt was binding against the original cast-iron strike plate. We filed and adjusted the strike plate alignment, re-pinned the Maxum cylinder so the owner and tenant kept separate restricted keys, and set up a simple two-level master system so the owner still had building-wide access.
This is why we stock Medeco M3 and M4 restricted key blanks, KeyMark XT cylinders, and the older Biaxial pin kits. Most Berwyn jobs finish same day because we’ve already seen the exact failure mode in the exact door type.
Medeco Models & Products We Service in Berwyn

We work on the full Medeco Residential Locksmith in Berwyn and commercial spectrum:
- Medeco Maxum deadbolt - residential high-security, restricted keyway, the most common Medeco we see on Berwyn bungalow front doors.
- Medeco Original / Classic (Biaxial) - older cylinders still common in Berwyn two-flats from 1980s-1990s upgrades. Parts are getting scarce. We stock OEM when available, quality aftermarket when not, and tell you honestly when a rebuild is no longer reliable.
- Medeco KeyMark / KeyMark XT - commercial-grade cylinders on many Berwyn two-flat entry doors. We carry the full KeyMark pinning kit.
- Medeco M3 / M4 - current restricted-keyway systems with patent-protected blanks. We stock blanks and can originate or duplicate on site.
Our Berwyn service area coverage means we keep fast-moving Medeco parts on our vans rather than ordering overnight. Most cylinder rekeys and strike adjustments finish in one visit.
Medeco Service Pricing in Berwyn
| Service | Typical Range |
|---|---|
| Medeco cylinder rekey (residential) | $180-$260 |
| Medeco cylinder rebuild / cam replacement | $220-$340 |
| Medeco Maxum deadbolt installation | $280-$420 |
| Master key system setup (2 levels) | $320-$480 |
| Strike plate adjustment / alignment | $140-$200 (often bundled with rekey) |
What drives cost: cylinder condition, whether OEM or aftermarket parts are required, mortise pocket modifications, and master key complexity. Every price is quoted in writing before we start - Haven Standard Clause 1 - and that written price is the price on the invoice. No call-out surcharge gets added on arrival. Free estimates. Call (331) 202-1318 for your exact figure.
Serving Berwyn, IL - Our Local Coverage Area

We’re based in the Berwyn 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 Berwyn
Yes. We rekey Medeco cylinders by replacing the bottom pins and master pins inside the existing housing. The cylinder body stays in your door. We do this routinely for Berwyn two-flat owners after tenant turnover, keeping the same hardware but rendering old keys useless. Call (331) 202-1318 - we’ll confirm your cylinder series over the phone and quote a firm price before dispatch.
Your 1920s-1940s wood door stile swells during Chicago freeze-thaw cycles, shifting the Medeco Maxum bolt out of alignment with its cast-iron strike plate. The bolt binds. The key won’t turn fully. We file and reposition the strike, then verify the bolt throws cleanly at both summer and winter door positions. This is a seasonal maintenance call we make regularly in Berwyn’s bungalow belt. Call (331) 202-1318 for a written estimate.
We stock Medeco M3, M4, and KeyMark XT restricted blanks for same-day key origination and duplication. For older Biaxial or Original series, we check blank availability against your key stamp - some obsolete lines require factory ordering. We tell you before we drive out. Call (331) 202-1318 with your key head markings for a quick check.
Yes. We design two-level master key systems where each tenant’s key opens only their suite, while your master key opens both. We do this regularly in Berwyn’s two-flat buildings, often rekeying both floors in one visit. The system is documented with a written bitting list left with you. Call (331) 202-1318 to scope your building’s cylinder types and quote a flat price.
Sometimes. Medeco makes mortise cylinders in several diameters and thread patterns, but your original cast-iron or steel mortise body may have non-standard mounting dimensions from the 1920s-1940s. We measure the pocket, throat depth, and cam offset on site. If a direct Medeco retrofit won’t seat cleanly, we explain whether a sleeve adapter, a period-appropriate replacement body, or a different cylinder series makes more sense. We don’t force hardware that doesn’t fit. Call (331) 202-1318 to schedule a free assessment.
Service Areas Near Berwyn

We run Medeco service calls across the near-west metro from our Chicago base. Regular stops include Medeco service in Chicago proper, from Logan Square to the bungalow blocks of Austin and Garfield Ridge; Medeco service in Cicero, where the two-flat density mirrors Berwyn’s; plus Oak Park’s frame houses, Oak Lawn’s mid-century stock, and Hinsdale’s larger residential hardware. Each area gets the same written-price-first protocol and the same stocked Medeco inventory.
Book Your Medeco Service in Berwyn Today
Call (331) 202-1318. A live person answers, 24/7. We’ll identify your Medeco series, quote a firm price in writing, and dispatch a background-checked technician with OEM parts and aftermarket backups for obsolete lines. Same-day service available for most Berwyn calls. The price on the phone is the price on the invoice - Haven Standard Clause 1, in force since 2002.
Written by Daniel Novak, Owner at Novak Lock & Security Chicago, serving Berwyn since 2002.






