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 Lock Installation & Rekey in Ashburn: What to Know First
We provide independent Medeco lock installation and rekey service in Ashburn, typically completing same-day rekeys and most installations within one visit. Rekeying a Medeco cylinder runs $45-$85 per core; full lock installation with a new Medeco deadbolt or mortise assembly ranges $280-$520 depending on the series and door prep condition. Every price is quoted in writing before we dispatch, and the technician is contractually prohibited from changing it at your door - Haven Standard Clause 1.
This page is for Ashburn homeowners who already own Medeco hardware or are considering it, and need a technician who understands the difference between a 51S rim cylinder and an X4 deadbolt, not someone who will force a Kwikset into the hole and call it done. Call (571) 410-8874 for a written estimate.
How Medeco Products Fail - and How We Fix Them
- Medeco Biaxial and original Medeco key-in-knob cylinders develop sidebar binding after 8-12 years in Ashburn’s humidity cycle. The sidebar slots in the plug accumulate oxidation from our wet springs and dry winters, causing the key to stick or require jiggling. We disassemble the plug, clean the sidebar channels with a non-residue solvent, lubricate with Medeco-spec graphite alternative, and rekey to a new keyway if you’ve lost control of your key copies. We do not spray WD-40 into a Medeco and call it fixed.
- Medeco X4 deadbolts in Broadlands and Brambleton homes often show premature tailpiece wear. The X4’s cast zinc tailpiece can round out where it meets the latch mechanism, especially on doors that see heavy use from teenagers or rental turnover. We replace with an OEM-grade stainless tailpiece or, if the housing is damaged, install a new X4 assembly with fresh pinning. We will not reuse a worn tailpiece to save fifteen minutes.
- Medeco 32 series mortise locks lose spring tension in the locking lever, common in One Loudoun commercial spaces with high traffic. The return spring behind the thumbpiece weakens, causing the latch to not fully retract or the deadbolt to drag. We replace the spring pack, rekey the cylinder to match existing master keying if present, and test the lever torque to factory spec. This is a bench job - we bring the lock back to the shop, not a field bodge.
- Aftermarket Medeco-compatible cylinders sold online frequently fail to seat properly in Ashburn’s older door preps. The cylinder body diameter varies by 0.005-0.010 inches from OEM spec, enough to cause cam misalignment in a mortise housing or thread damage in a rim cylinder mount. We stock genuine Medeco cylinders and a selection of verified aftermarket equivalents with documented dimensional tolerances. If we wouldn’t install it on our own door, we won’t install it on yours.
- Medeco M3 and Biaxial keys with excessive wear create false “lock failure” calls. The angled cuts on Medeco keys wear differentially, and a worn key will operate poorly even in a healthy cylinder. We gauge key wear with a Medeco-specific depth key set; if the key is the problem, we cut a factory-spec replacement to code and rekey the cylinder if you’ve had unaccounted copies made. We identify the actual failure, not the symptom.
Our Medeco Lock Installation & Rekey Process

- 1
Call and written quote. You describe the lock, the symptoms, and the door type. We quote a firm price range based on Medeco parts availability and labor. The price on the phone is the price on the invoice - Haven Standard Clause 1.
- 2
Dispatch with correct parts. We stock Medeco Biaxial, X4, 32 series, and 51S cylinders in common keyways. For Ashburn homes in Ashburn Village or near the W&OD Trail, we verify door thickness and backset before leaving the shop to avoid a second trip.
- 3
On-site diagnosis and photo record. The technician documents the existing lock condition, identifies the specific failure, and confirms the quoted scope. You receive a copy of the photo record before work begins.
- 4
Repair or installation with OEM or specified aftermarket parts. We explain any parts choice - genuine Medeco cylinder versus quality aftermarket - and its warranty implication. No substitution without your written approval.
- 5
Function testing and key verification. Every Medeco rekey is tested with all provided keys, including operation under light load (hand pressure on the door) to confirm sidebar engagement. Installations are tested for deadbolt throw, strike alignment, and latch clearance.
- 6
Written invoice, documented record, and 365-Day Done Right Promise. You receive a detailed invoice, the photo record, and warranty terms before the technician leaves. If it’s not done right, we make it right.
What Medeco Lock Installation & Rekey Costs in Ashburn
| Service | Typical Range | What Affects Price |
|---|---|---|
| Medeco rekey (per cylinder) | $45-$85 | Series (Biaxial vs. X4 vs. M3), keyway availability, master keying |
| Medeco deadbolt installation (new) | $280-$420 | Door prep condition, existing hole diameter, strike plate routing |
| Medeco mortise lock installation | $380-$520 | Door modification, faceplate fitting, cylinder type |
| Medeco rim cylinder replacement | $160-$240 | Cylinder grade, escutcheon condition, keyway match |
| Emergency after-hours service | Standard rate + $35 | Time of call, not severity of problem |
Factors that move the price: doors prepped for standard tubular locks require boring and mortising for Medeco deadbolts; older Ashburn homes with solid-core wood doors take longer to machine than newer fiberglass units; master key systems require additional pinning labor. We disclose all of this in the written quote. There is no call-out surcharge, no “trip fee” added on arrival, and no estimate fee for standard requests. Bring us a competitor’s written estimate and we will review it at no charge - our Free Second Opinion policy.
Why Ashburn Homeowners Call Novak Lock & Security Ashburn for Medeco Work

We are not a dispatch center sending whichever contractor is nearest. Our technicians carry Medeco pinning kits, factory key blanks, and the depth keys needed to diagnose wear versus actual lock failure. Since 2002, we have installed or serviced over 60,000 locks, keys, and systems - every one with a written price before we started and a documented record when we left.
The 365-Day Done Right Promise applies to every Medeco job. Background-checked, uniformed technicians work to The Haven Standard, the same quality framework applied across all ten Haven brands. We also service Schlage and Kwikset for homes with mixed hardware, so one visit handles everything.
The name on the invoice is the same name on the van. Daniel Novak brought Novak Lock & Security to the Ashburn area years ago, and his name is on every job from One Loudoun retail corridors to residential streets in Broadlands.
FAQs
Rekeying by a qualified locksmith does not void Medeco’s warranty, but using non-OEM parts or improper pinning can. As an independent Medeco service provider, we use factory-spec pinning and document the work so warranty claims remain valid. If your lock is under warranty, we note the serial number and service date on your invoice for your records. Call (571) 410-8874 for an exact quote - estimates are free.
Same-day service is standard for rekey requests called in before 2 PM on weekdays; we schedule installations and survey commercial master key systems. Our dispatcher quotes a firm arrival window, not a four-hour “sometime today” window. Call (571) 410-8874 for today’s availability - estimates are free.
Repair is economical when the cylinder body and housing are sound - typically Biaxial and original Medeco hardware built before 2010, which was over-engineered by today’s standards. Replace when the housing is cracked, the bolt mechanism is worn, or you need features the old series doesn’t offer. We assess both options and quote each in writing. Call (571) 410-8874 for an exact quote - estimates are free.
We stock common Medeco cylinders, key blanks, and service parts for Biaxial, X4, 32 series, and 51S lines. Specialty keyways and restricted profiles may require a two-day order. We tell you before dispatch if your job needs ordered parts, and we do not charge a second trip fee when we return to install them. Call (571) 410-8874 to confirm availability for your specific series - estimates are free.
Ask to see the pinning kit. A qualified Medeco technician carries factory depth keys, sidebar gauges, and pinning tweezers - not just a standard rekey kit. Our technicians are background-checked, uniformed, and trained to The Haven Standard. Every visit includes a documented photo record left with you. The price quoted on the phone is the price on the invoice, guaranteed. Call (571) 410-8874 with any questions - estimates are free.
Written by Daniel Novak, Owner, Novak Lock & Security Ashburn at Novak Lock & Security Ashburn, serving Ashburn and nearby areas.






