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 Boston, NY | Novak Lock & Security
Medeco locksmith service in Boston means working on high-security cylinders (locks that cannot be picked or bumped by standard tools) in some of the oldest housing stock in the country. We’re Novak Lock & Security, and we’ve been installing, rekeying, and repairing Medeco hardware across Boston since 2002. What makes our Medeco work different here: we know that a Medeco Maxum deadbolt on a Beacon Hill brownstone fails differently than one on a Back Bay condo, and we stock the parts to fix both. Call (331) 310-8471 for a written quote before anyone is dispatched.
Why Boston Residents Choose Us for Medeco Service
We work on Medeco locks every week, and we’ve learned what holds up in Boston conditions. Road salt, freeze-thaw cycles, and the September 1st lease flip all take a toll on high-security hardware in ways that a generic locksmith simply won’t recognize. Daniel Novak, our owner, learned the trade at Queensborough Community College and apprenticed under a locksmith who serviced commercial accounts in Midtown. He’s been working New York and Boston doors, deadbolts, and cylinders for nearly two decades. He trained our technicians the same way: name the part, state what we found, and quote a firm price before touching anything.
We’re an independent Medeco service provider. We are not a Medeco factory branch, not a Medeco-authorized dealer, and we don’t claim to be. What we are is a team that has rekeyed, repaired, and installed thousands of Medeco cylinders across Boston’s brownstones, triple-deckers, and apartment buildings. We use genuine Medeco pins, springs, and cylinders for security-critical repairs, and we keep a full pinning kit and common Medeco parts on every truck. That means faster turnaround when you need a Medeco issue solved, whether it’s a seized cylinder on Beacon Hill or a bulk rekey in Allston before the next tenants arrive. Our full Medeco sales & service capability covers everything from single deadbolt replacement to building-wide master key systems.
Common Medeco Locksmith Problems We Solve in Boston

Here’s what we see most often in Boston, and why it happens here specifically:
- Road-salt corrosion seizing Medeco Maxum cylinders. First-floor exterior doors facing the street get hit with salt spray all winter. The brass cylinder pins corrode, the key won’t insert, and the lock eventually seizes entirely. We’ve pulled cylinders that looked like they’d been dipped in brine. Full repair or cylinder replacement is the fix.
- Freeze-thaw pin binding in unheated vestibules. Triple-deckers in Dorchester, East Boston, and Jamaica Plain often have unheated entryways. When temperatures swing, brass pins inside Medeco cylinders contract and expand. Keys get stiff, then impossible. We disassemble, clean, lubricate with the correct non-gumming product, and re-pin if needed.
- Stripped set screws on Medeco M3 cylinders after tenant turnover. Every time a landlord rekeys for a new tenant, a tech loosens and retightens the set screw. After five or six cycles, threads strip. We keep replacement set screws and full M3 cylinder assemblies stocked. A stripped screw on a Medeco M3 is often repairable in one visit without replacing the whole cylinder.
- Worn sidebar springs in high-use KeyMark locks. Apartment building common areas see hundreds of key turns per week. The sidebar springs in Medeco KeyMark cylinders wear out, and key operation becomes inconsistent. We replace the core rather than re-pinning a failing mechanism. It’s the honest fix and the one that lasts.
- Mortise lock retrofits in century-old doors. Beacon Hill and Back Bay brownstones built from the 1840s to the 1890s still carry original mortise lock sets. Adding a Medeco cylinder to those bodies requires careful measurement, adapter plates, and sometimes custom tailpiece work. A standard locksmith trying to force a modern cylinder into an 1890s mortise body is how doors get ruined. We do this work the right way, and we photograph everything before and after.
Medeco Service in Boston: What Local Conditions Mean for Your Equipment
Boston’s September 1st “Moving Day” is a locksmith event with no equivalent in any neighboring city. Because dozens of universities tie their lease calendars to the academic year, a huge share of Boston’s rental units turn over on the same day. Landlords across Allston, Brighton, Mission Hill, and the Fenway need Emergency Locksmith in Boston services for mass rekeying done in a single compressed window, often before 9 a.m. when the new tenants arrive. For Medeco owners, this creates a specific pressure: you can’t wait until August 28th to schedule a master key system rekey. Our techs pre-stage rekeying kits by building, map out the cylinder changes in advance, and work through entire triple-deckers systematically. We’ve had landlords bring us a list of 18 units on August 30th and expect same-day turnaround. We tell them what’s possible, quote a firm price per cylinder in writing, and get it done. The alternative is a tenant standing on the stoop with a key that doesn’t turn.
And then there’s winter. Boston’s freeze-thaw cycles and heavy road-salt use corrode exterior deadbolt cylinders and strike plates faster than in inland cities. Wooden door frames in triple-deckers and century-old row houses swell after cold snaps, throwing bolt alignment off by millimeters. A Medeco Maxum deadbolt is a precision device. When the bolt is fighting a swollen frame, the cylinder takes the strain, and the pins begin to wear unevenly. We see the result every January and February: a wave of Medeco lockouts and stiff-key calls that peaks about two weeks after the first hard freeze.
Medeco Models & Products We Service in Boston

We service the full Medeco line that appears in Boston residential and commercial work: the Medeco Maxum deadbolt, the Medeco M3 cylinder, Medeco KeyMark, and Medeco SiteLine. We also work with older Medeco Classic and Biaxial cylinders still installed in some Back Bay and Beacon Hill buildings. Our parts policy is straightforward: genuine Medeco pins, springs, cylinders, and sidebar assemblies for anything that affects security. When a part is cosmetic or prone to repeat corrosion (strike plates, tailpieces, mounting screws), we’ll use a high-quality aftermarket alternative, often stainless, that won’t rust out in two winters. If a Medeco cylinder is pitted or the sidebar is worn, we replace the core rather than trying to re-pin a failing mechanism. We stock common Medeco parts on our Boston trucks, so most service calls are one-visit jobs.
Medeco Service Pricing in Boston
Here’s what Medeco service typically costs in Boston, quoted in writing before we start:
- Medeco cylinder rekey (per cylinder): $45-$85, depending on the model and condition
- Medeco Maxum deadbolt replacement (parts + labor): $190-$310
- Medeco M3 cylinder replacement: $140-$220
- Master key system setup (per building, up to 12 units): $380-$700
- Emergency lockout service with possible Medeco repair: $110-$190 service call, plus parts
These are honest ranges for Boston. The price you’re quoted on the phone is the price on the invoice. Haven Standard Clause 1: the price on the phone is the price on the invoice. No call-out surcharge added on arrival, no upcharge because the neighborhood has a name. We walk through exactly what drives the cost, and we email a written scope before any work begins. Call (331) 310-8471 for an exact quote. Estimates are free.
Serving Boston, MA - Our Local Coverage Area

We’re based in the Boston 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 Boston
Yes. Bulk Medeco rekeying is standard for us in late August, and in most cases the existing cylinders stay in place. We re-pin each cylinder to the new key, verify operation, and document every unit with photos. For landlords on Allston, Brighton, and Mission Hill, we recommend scheduling by mid-August. Call (331) 310-8471 and we’ll give you a per-cylinder price for your building size.
Road salt absolutely damages exterior Medeco cylinders in Boston, and the damage is real, not cosmetic. Salt spray works its way into the cylinder, corrodes the brass pins, and eventually the key won’t insert or turn. First-floor doors facing the street are the most vulnerable. The fix is usually a cylinder clean-and-repin, and in severe cases a cylinder replacement. A stainless aftermarket tailpiece and a proper weather seal help prevent recurrence. We can quote that repair over the phone.
In most cases, yes. We’ve retrofitted Medeco cylinders into original mortise lock bodies on Beacon Hill and Back Bay brownstones dating to the 1800s. It requires a cylinder adapter or a custom-tailored tailpiece, but the lock body almost never needs replacement. We’ll measure, photograph, and quote the retrofit as a flat fee before starting. The name on the van is the same name on the invoice.
Freeze-thaw cycles cause the brass pins inside the Medeco cylinder to expand and contract, and the binding gets worse over time. Unheated vestibules in Dorchester, East Boston, and Jamaica Plain triple-deckers are the classic setting. The fix is a disassembly, cleaning, and re-lubrication with a non-gumming product, plus a repin if the pins have worn. If you’re noticing this now, January and February are when it turns into a full lockout. Call (331) 310-8471 before that happens.
Keep the KeyMark cylinder on the mechanical override. Electronic access systems fail: dead batteries, lost fobs, network outages. The Medeco KeyMark mechanical override is the reliable backup that keeps working when everything else doesn’t. We service and rekey KeyMark cylinders for Boston buildings that are adding electronic access, and we recommend retaining the mechanical override on every exterior door. We’ll give you a written assessment of what to keep and what to replace.
Service Areas Near Boston

We provide Medeco locksmith service throughout the Boston service area, including Back Bay, Beacon Hill, Allston, Brighton, Mission Hill, Dorchester, East Boston, Jamaica Plain, and the Fenway. For Medeco work in other cities, see our Medeco service in Memphis and Medeco service in New South Memphis pages.
Book Your Medeco Service in Boston Today
Need Boston Lock Installation & Rekey help? We answer the phone live, 24/7. You’ll get a written price before anyone is dispatched, and a documented photo record when the job is done. Call (331) 310-8471 for a free estimate. Same-day service is available for most Medeco repairs, locks, and keys.
Written by Daniel Novak, Owner at Novak Lock & Security, serving Boston since 2002.






