Medeco Lock Rekeying Nationwide | Novak Lock & Security Atlanta

Medeco Lock Rekeying: The Atlanta Owner’s Guide

Medeco lock rekeying in Atlanta typically runs $45-$85 per cylinder for residential deadbolts and knob sets, with high-security commercial cylinders landing at $75-$140. We stock Medeco key pins, sidebar components, and pinning kits for the Biaxial, M3, and X4 product lines on our trucks, and most residential rekeys are completed same day. Most Atlanta owners discover their Medeco needs rekeying after a move, a lost key, or a tenant turnover - or when the key starts catching in humid summer months, which swells door frames and puts extra torque on precision-cut Medeco sidebar mechanisms.

Call (470) 944-6813

Which Medeco Models This Applies To

Medeco has produced three distinct cylinder architectures since the 1980s, and each requires a different pinning kit and key blank. The Biaxial series, identifiable by the angled cuts on the key and the “Biaxial” stamp on the cylinder face, uses a rotating pin and sidebar system that demands proprietary key blanks cut on Medeco-specific equipment. The M3 series adds a sliding pin in the keyway and an interactive element; look for the “M3” marking and the small dimple near the key bow. The X4, Medeco’s more recent residential line, uses a conventional pin-tumbler layout with restricted keyways - simpler to rekey, but still requiring factory-authorized blanks.

We carry pinning kits for all three. Aftermarket key blanks exist for Biaxial and M3, but we use OEM Medeco blanks exclusively. The tolerances on the sidebar geometry are tight enough that we’ve seen third-party blanks fail to retract the sidebar cleanly, particularly on cylinders installed before 2010. For Atlanta’s older intown stock - the Craftsman bungalows in Virginia-Highland, the 1920s brick duplexes in Candler Park - we verify the cylinder generation before quoting, since pre-2000 Medeco hardware sometimes uses discontinued pinning depths that require factory special-order components.

Novak Lock & Security Atlanta is an independent service provider, not affiliated with Medeco. We are factory-authorized to service their products.

Signs Your Medeco Lock Rekeying Is Failing

• Key requires jiggling or repeated insertion to turn. This usually indicates wear on the bottom pins or sidebar fingers, or accumulated grit from Atlanta’s heavy pollen seasons working into the pin chambers. Medeco’s tight tolerances mean even slight debris changes the shear line alignment.
• Key turns but bolt does not retract fully. The tailpiece or cam connecting cylinder to bolt mechanism may be stripped, or the sidebar is not disengaging completely due to worn sidebar springs - a failure mode we see more often on south-facing doors where thermal cycling fatigues the metal.
• New keys cut from code do not operate the lock. Either the code card was recorded incorrectly at installation, or the lock was previously rekeyed without updating the card. We encounter this frequently in Atlanta’s flipped properties, where the investor rekeyed cheaply and left no documentation.
• Lock was rekeyed previously and now feels “mushy.” A technician used standard .003-inch tolerance pins instead of Medeco’s specified .001-inch, or substituted generic springs with incorrect compression rates. The lock functions until vibration and use expose the mismatch.
• Lost all working keys and no code card exists. Not a mechanical failure, but the symptom that triggers most calls. Medeco’s restricted keyway means a locksmith cannot simply impression a new key; the cylinder must be disassembled and decoded, or replaced if the pinning is non-standard.

Replacement Cost & What’s Included

What drives the range: cylinder generation (X4 is faster than M3), accessibility (mortise cylinders behind trim plates take longer), and whether we need to decode without a working key. Every quote is delivered in writing before we start, per Haven Standard Clause 1: the price on the phone is the price on the invoice. No dispatch fee, no surcharge for “high-security complexity” added at the door. Work is backed by our 365-Day Done Right Promise.

DIY or Call Us?

An owner can safely verify the cylinder model by photographing the face stamp and key bow, and can confirm whether any working keys remain. Do not attempt to disassemble a Medeco cylinder yourself. The sidebar springs are under tension, the bottom pins are sized in .001-inch increments that require a plug follower and lab-quality calipers to manage, and the keyway’s restricted geometry makes improvised tools likely to jam or damage the warding.

We’ve been called to Inman Park and Old Fourth Ward homes where a homeowner’s YouTube-guided attempt left pins scattered and the cylinder unrecoverable. The name on the van is the warranty. If your Medeco is sticking, missing keys, or recently changed hands, call (470) 944-6813. We’ll quote the exact price before dispatch, and the technician arrives with the correct pinning kit already on the truck.

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