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 Katy: What to Know First
We provide independent Medeco lock installation and rekey service in Katy, typically completing residential jobs same-day or next-day with a written quote delivered before any work begins. Most Medeco rekeys run $45-$85 per cylinder and full installations range $280-$520 depending on the series and door prep required. We are not affiliated with or authorized by Medeco; we are an independent service provider with factory-trained technicians who carry OEM and quality aftermarket inventory for every common Medeco line.
This page is for Katy homeowners who already own Medeco hardware and need it installed, rekeyed, or assessed for replacement. If you are comparing brands, we also stock Schlage and Kwikset, but this page covers Medeco specifically. Call (832) 402-8386 for a written estimate with no dispatch fee.
How Medeco Products Fail - and How We Fix Them
- Medeco Biaxial cylinder pinning wear. The angled pin design that makes Biaxial pick-resistant also creates asymmetric wear on the bottom pins after 8-12 years of daily use. We see this in Katy homes built during the 2010-2015 construction wave, where original Biaxial deadbolts now stick at 45 degrees or require jiggling. We rekey with factory-spec replacement pin kits and replace any mushroom drivers that have flattened; aftermarket pin sets save roughly $30 but we disclose the source in writing before installation.
- Medeco M3 sidebar spring fatigue. The M3’s sliding sidebar depends on a small coil spring that loses tension in high-humidity environments. Katy sits in a Gulf Coast humidity zone where we see this failure mode more frequently than in drier Texas markets. The symptom is a key that works on the third or fourth try, especially in morning moisture. We replace the sidebar spring with OEM parts and lubricate with Medeco-spec graphite compound, not WD-40, which attracts dust and accelerates recurrence.
- KeyMark interchangeable core (IC) housing cracks. KeyMark is Medeco’s commercial-grade IC line, common in Katy office parks and some mixed-use developments near LaCenterra at Cinco Ranch. The zinc alloy housing can crack at the retaining lug if the core is removed with tension on the control key. We replace the housing with a solid brass aftermarket equivalent where the application allows, or source OEM housings for master-keyed systems where bitting records must remain intact.
- Medeco Logic electronic cylinder battery corrosion. The Logic series uses a cylindrical battery compartment that seals with an O-ring. In Katy’s climate, that O-ring hardens after 3-4 years and allows condensation to reach the contacts. The lock fails “secure” - dead battery with no override. We replace the O-ring with a fluorocarbon upgrade, clean the contact block, and program replacement credentials if the customer has lost administrative access.
- Original Medeco 32 series cam wear in mortise applications. The 32 series cam is a stamped steel part that wears where it engages the mortise bolt. In Katy, we find this most often in 1980s-1990s homes in the Old Katy area where the original hardware is still in service. The fix is a cam replacement with a hardened steel aftermarket part or full cylinder upgrade to current Medeco specifications; we test the mortise bolt throw depth before quoting because an out-of-spec bolt will destroy the new cam in months.
Our Medeco Lock Installation & Rekey Process

- 1
Call and diagnosis. A live person answers. We ask for the Medeco series name (printed on the key bow or cylinder face), the symptom, and the door type. Daniel Novak or a senior tech often handles Medeco calls directly.
- 2
Written quote by phone or text. Haven Standard Clause 1: the price we quote is the price on the invoice. For rekeys, we quote per cylinder. For installations, we quote flat including door prep, hardware, and labor.
- 3
Dispatch with parts. We stock Medeco OEM pins, springs, sidebar components, and common cylinders. If your job requires a rare part, we source it and reschedule rather than substitute without written approval.
- 4
On-site verification and work. The technician confirms the diagnosis, photographs the existing hardware, and completes the rekey or installation. We name the part, name the price, describe what was found. The customer signs the written scope before work proceeds.
- 5
Testing and documentation. Every key is tested in every position. The technician leaves a documented photo record and a written warranty under the 365-Day Done Right Promise.
- 6
Follow-up. We call within 48 hours on Medeco jobs to confirm key operation and answer any questions about the new bitting or master key hierarchy.
Before
AfterWhat Medeco Lock Installation & Rekey Costs in Katy
| Service | Typical Range | What Affects Price |
|---|---|---|
| Medeco rekey (per cylinder) | $45-$85 | Series (Biaxial vs. M3 vs. X4), master keying, pin count |
| Medeco deadbolt installation | $280-$420 | Door prep needed, strike plate replacement, finish grade |
| Medeco mortise cylinder replacement | $320-$520 | Cam type, backset verification, mortise lock condition |
| Medeco Logic electronic service | $180-$340 | Battery/cleaning vs. credential reprogramming vs. component replacement |
| KeyMark IC core rekey or replacement | $55-$120 | OEM vs. aftermarket housing, control key availability |
These are Katy’s market ranges based on our 2024-2025 invoice data. The full price is quoted on the phone before anyone is dispatched, and it is the price on the invoice. No call-out surcharge is added on arrival. Call (832) 402-8386 for an exact quote - estimates are free.
Why Katy Homeowners Call Novak Lock & Security Katy for Medeco Work

We have installed or serviced over 60,000 locks, keys, and systems since 2002, 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 rekey and installation; if it’s not done right, we make it right. Our technicians are background-checked, uniformed, and trained to The Haven Standard, the same quality framework applied across all ten Haven brands.
Daniel Novak keeps a worn copy of a Medeco spec sheet in his truck because he likes having the numbers in front of him when he’s explaining a cylinder upgrade to a customer. That habit translates to accurate diagnosis before any part gets ordered, which keeps invoices predictable and return visits rare. We also stock Schlage and Kwikset for customers who need a different solution, but we do not use a Medeco call as an opportunity to upsell away from hardware the customer already owns.
FAQs
Medeco’s warranty covers defects in materials and workmanship; rekeying by a qualified technician does not void it. We use factory-spec pinning kits and document the work with photos, which supports any future warranty claim you might make directly with Medeco. If you are concerned about warranty status, we will photograph your original cylinder markings before disassembly. Call (832) 402-8386 for a written quote - estimates are free.
Most residential Medeco rekeys are completed same-day or next-day. We stock pins and springs for Biaxial, M3, and X4 series, so the typical Katy job requires no parts delay. Commercial KeyMark systems may need 24-48 hours if we are adding to an existing master key hierarchy and must verify bitting records. Call (832) 402-8386 for an exact quote - estimates are free.
Rekey when the hardware is sound and you need new keys; replace when the cylinder shows physical damage, the housing is cracked, or you are upgrading from an older series to current specifications. We assess this on every call and report the condition of your existing hardware in writing before quoting either option. Call (832) 402-8386 for an exact quote - estimates are free.
We stock both and disclose the source in writing before installation. OEM parts carry Medeco’s part-level warranty; quality aftermarket parts from established manufacturers save 15-30% and perform identically in most residential applications. We recommend OEM for master-keyed commercial systems where bitting records must remain traceable. Call (832) 402-8386 for an exact quote - estimates are free.
Haven Standard Clause 1: the price on the phone is the price on the invoice. Our technicians are contractually prohibited from changing the quoted price at the door. This rule has been in place since 2002 and is the foundation the business was built on. The only exception is if you request additional work after the quote is issued; in that case, we provide a revised written quote before proceeding. Call (832) 402-8386 for an exact quote - estimates are free.
Written by Daniel Novak, Owner, Novak Lock & Security Katy at Novak Lock & Security Katy, serving Katy and nearby areas.






