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.
Why Manhattan Homeowners Choose Medeco Locksmith
We provide Medeco service in Manhattan, from Inwood walk-ups to Financial District commercial towers, with factory-compatible parts stocked in our vans and every job priced in writing before we start. Medeco’s angled-pin cylinders and restricted keyways require specialized tooling and keyway authorization that standard locksmiths don’t carry - we do. Call (862) 319-3759 for a firm quote.
Manhattan’s housing stock makes Medeco locks a practical choice, not an overbuild. Medeco Locksmith in Upper West Side, NY pre-war co-ops, rental walk-ups in Washington Heights, and Midtown office suites all face the same problem: standard pin-tumbler locks can be picked or bumped with tools bought online. Medeco’s M3 and M4 cylinders use angled pins and sidebar mechanisms that resist those attacks. In a borough where a single stolen master key can compromise an entire building’s security, the restricted keyway - meaning no one can duplicate your key without authorization from the registered dealer who cut it - is the feature building managers actually pay for.
We’re an independent Medeco service provider. Not authorized, sponsored, or endorsed by Medeco. That distinction matters because it keeps us free to recommend what’s actually needed: repair when the cylinder is sound, replacement when it’s not, and honest talk about whether a $400 high-security deadbolt makes sense for your specific door and building code situation.
Why Trust Novak Lock & Security Manhattan for Your Medeco Locksmith?
Daniel Novak trained in locksmithing through the trade programs at West Los Angeles College before moving east and building a career that’s now spanned well over a decade serving Manhattan. He and his crew are known for reading a door frame before they quote a job, because the frame usually tells you more than the customer does. He keeps a worn copy of a Medeco technical manual in the van - not for show, just because some cylinders still make him think twice.
Our technicians carry Medeco pinning kits, restricted keyway blanks for M3 and M4 systems, and replacement Maxum deadbolt cylinders. We know the difference between a biaxial cylinder from the 1990s and a current M4, and we know which buildings in Manhattan still run the older keyways. That matters when you’re standing in a Harlem walk-up hallway with a key that won’t turn and a super asking questions.
Haven Standard Clause 1 governs every Medeco job: the price on the phone is the price on the invoice. No exceptions. The technician who arrives cannot change the quote. This rule has been in place since 2002, and it’s why the name on the invoice is the same as the name on the van.
Every visit produces a documented photo record, left with you at completion. Every lock installation, rekey, or repair carries the 365-Day Done Right Promise. Background-checked, uniformed technicians. Calls answered by a live person, 24/7.
Common Medeco Locksmith Problems We Fix in Manhattan

- Sticky or binding key rotation in Medeco M3/M4 cylinders. The angled pins in Medeco’s patented keyway are precise - and unforgiving. Old lubricant, airborne grit from Manhattan street traffic, and the salt-laden humidity off the Hudson and East Rivers gum up the works. Graphite, the old standby, turns to paste. We disassemble the cylinder, clean the pin chambers with solvent and compressed air, re-pin if wear has opened tolerances, and lubricate with Medeco-specified dry film. The key should turn with clean, distinct clicks at each pin station.
- Broken or worn Medeco restricted keys. Medeco M3 and M4 keys use angled cuts that standard key machines can’t reproduce. When a key wears down or snaps, most hardware stores can’t help - they don’t stock the blanks and aren’t authorized to cut them. We carry registered Medeco keyway blanks and cut on-site. If you’ve lost your key card (the authorization document that came with your lock), we can often verify your registration through the dealer network, though the process takes longer.
- Loose Maxum deadbolt mounting and strike failures. Manhattan’s pre-war steel doors and hollow-metal commercial frames don’t always mate cleanly with Medeco Maxum hardware. We’ve found Maxum deadbolts installed with undersized screws in stripped door prep, or strike plates mounted in crumbling plaster frames. The bolt throws, but the door doesn’t secure. We assess the door prep, install proper sex bolts or through-bolted mounting where the frame allows, and align strikes to NYC Administrative Code §27-2043’s 1-inch minimum throw requirement.
- Medeco eCylinder / XT electronic lockouts and audit failures. Manhattan’s temperature swings - steam heat in winter, humidity spikes in summer - push Medeco electronic cylinders past their environmental tolerances. Battery contacts corrode. RFID readers fail to handshake. Audit logs stop recording, which matters when your building’s insurance rider requires access documentation. We diagnose electronic faults, replace battery assemblies, and reset cylinder firmware. For persistent failures, we evaluate whether the door’s microclimate demands a mechanical fallback.
- Retrofitting Medeco into antique mortise bodies. In tenement walk-ups on the Lower East Side, Inwood, and Harlem, we encounter original mortise locksets from the 1920s with skeleton-key bypasses still functional. Installing a Medeco cylinder in these bodies requires custom tailpiece fabrication or sourcing adapter plates that haven’t been manufactured in decades. We’ve built relationships with Manhattan hardware specialists who still machine these parts. It’s slow work, but it preserves the door’s historic fabric while closing the security gap.
Medeco Parts & Our Repair-vs-Replace Approach
We stock genuine Medeco OEM cylinders, pins, and keys for M3, M4, and Maxum systems. For non-security-critical components - strike plates, mounting hardware, trim rings - we use quality aftermarket parts when OEM lead times stretch past what a locked-out customer can wait.
Here’s our repair threshold: if a Medeco cylinder’s pin chambers are worn past specification, or if the sidebar groove has been damaged by forced entry attempts, we recommend replacement. Re-pinning a compromised high-security cylinder defeats the point of the restricted keyway. The new cylinder gets fresh pinning, new keys, and intact key control. You’ll know before we start - the dispatcher quotes both options when the description supports it, and the technician confirms on arrival.
No call-out surcharge gets added at the door. The price we quote includes everything described. Call (862) 319-3759 for a written estimate.
Our Medeco Service Process - Step by Step

- 1
Diagnosis. We identify the cylinder series - M3, M4, biaxial, classic, or electronic - and test for the specific failure mode. Is the key binding in the angled pinway? Is the sidebar failing to retract? For electronic cylinders, we check battery voltage and reader response. We photograph the lock condition and the door prep before touching tools.
- 2
Repair or install. For mechanical cylinders: disassemble, clean, inspect tolerances, re-pin or replace, cut new restricted keys on authorized blanks. For Maxum deadbolts: address mounting integrity and strike alignment. For electronic cylinders: replace power components, reset firmware, test audit logging. We use OEM Medeco parts for all security-critical components.
- 3
Test and document. Every key is tested for smooth rotation through full travel. The deadbolt throw is measured against code minimums. Electronic cylinders complete a full lock-unlock-audit cycle. We leave you with the documented photo record, written scope of work, and your new restricted key card if keys were cut.
- 4
Warranty. All Medeco work is backed by our 365-Day Done Right Promise. If the key binds, the bolt drags, or the electronic cylinder faults within a year, we return and make it right.
Medeco Products We Service & Install in Manhattan
We carry stock and service daily:
- Medeco Maxum deadbolts - residential and light commercial grade, single and double cylinder
- Medeco M3 cylinders - patented restricted keyway, UL 437 listed
- Medeco M4 cylinders - current-generation angled pin and sidebar system
- Medeco biaxial and classic cylinders - legacy systems still in service across older Manhattan buildings
- Medeco eCylinder and XT electronic cylinders - audit-capable access control for commercial and institutional doors
Restricted keyway blanks for M3 and M4 are in our vans. We do not stock every legacy biaxial keyway, but we can source within 24-48 hours for most registered systems.
We Also Service These Brands

Medeco is one line in our full security spectrum. We service and install Schlage residential and commercial grade hardware, Kwikset entry-grade and SmartKey products, Mul-T-Lock, Abloy, Baldwin, and standard commercial interchangeable cores. The same written-price rule applies to every brand. We’re not single-brand dependent, which means we can recommend Medeco when it fits and something else when it doesn’t.
FAQs - Medeco Locksmith Service in Manhattan
Is Novak Lock & Security Manhattan authorized by Medeco?
No. We are an independent Medeco service provider, not authorized, sponsored, or endorsed by Medeco. We use factory-compatible parts and procedures, but we do not represent the manufacturer. This independence lets us give honest repair-vs-replace guidance without brand loyalty overriding your interests.
Can you cut or duplicate a Medeco M3 or M4 restricted key without the original key card?
Generally, no. Medeco’s restricted keyway program requires the key card that came with your lock to authorize duplication. If you’ve lost it, we can sometimes verify your registration through the dealer network, but the process takes additional time. Without verification, we cannot cut restricted keys - that’s the feature working as designed. Call (862) 319-3759 and we’ll check your specific situation.
My Medeco deadbolt key turns hard or sticks - does it need a new lock or just service?
Usually service. Sticky rotation in a Medeco cylinder typically means the angled pins are gummed with old lubricant or debris, not that the cylinder is worn out. We clean, inspect, and re-lubricate; replacement is only needed if pin chamber wear has opened tolerances beyond specification. The technician will show you the measurement and explain before proceeding. Call (862) 319-3759 for a firm quote - estimates are free.
Can you rekey a Medeco lock to a different key if I lose my keys?
Yes, if you have a registered M3 or M4 system and can provide ownership verification. We repin the cylinder to a new key combination, cut new restricted keys, and register the new keyway under your name. For electronic cylinders, we also reset the audit trail. The old keys will no longer operate the lock. Pricing depends on cylinder series and whether we need to source special pinning; call (862) 319-3759 for an exact quote.
Do you service Medeco electronic cylinders and keypad locks, or only mechanical Medeco locks?
We service both, as part of our Commercial Locksmith services. Medeco eCylinder and XT electronic cylinders are in our regular rotation for Manhattan commercial clients. We handle battery replacement, reader diagnostics, firmware resets, and audit-log recovery. For buildings where electronic reliability is critical, we also assess whether the door’s environment - steam heat, humidity, temperature swings - suggests a mechanical backup or hybrid configuration.
Will installing a Medeco high-security deadbolt require modifying my Manhattan apartment door?
Often, yes - and that’s where building rules intersect with hardware. NYC Administrative Code §27-2043 requires a 1-inch minimum deadbolt throw on dwelling-unit doors, which Medeco Maxum hardware meets, but the door prep may not. Pre-war doors in Manhattan frequently need enlarged face bore or deeper mortising. Co-op boards and building supers typically require approval for hardware changes, and some buildings restrict modifications to fire-rated doors. We photograph existing conditions, specify exactly what prep is needed, and provide documentation you can submit to your board before work begins. The full scope and price are quoted in writing before anyone is dispatched. Call (862) 319-3759 to schedule an assessment.
Book Your Medeco Service in Manhattan, NY

Call (862) 319-3759. A live person answers, 24/7. We’ll ask about your Medeco model if you know it, describe the problem, and quote a firm price that the technician cannot change at your door. Written scope, documented photo record, 365-Day Done Right Promise. Serving Manhattan since 2002.
Written by Daniel Novak, Owner at Novak Lock & Security Manhattan, serving Manhattan since 2002.






