Medeco Deadbolt Installation: The Washington Owner’s Guide
Medeco deadbolt installation in Washington typically runs $280-$450 for a complete setup, including the cylinder, strike hardware, and door prep. Most residential jobs in Washington’s older neighborhoods finish in 45-90 minutes, and we stock Medeco Maxum 11* series and Classic series deadbolts on our trucks for same-day service. You’ll know it’s time when the key starts catching at 10 o’clock, the bolt drags against the strike, or the thumbturn goes slack - all signs the internal sidebar or cam timing is slipping.
Which Medeco Models This Applies To
Medeco keeps three residential deadbolt lines in circulation, and getting the right one matters because the backset and faceplate dimensions vary.
- Maxum 11* series: The current flagship. Solid brass body, hardened steel bolt, UL 437 listed. Most common on Washington homes built after 1995. Look for the “11” prefix in the model number stamped on the lock face.
- Classic series: The workhorse from the 1980s through early 2000s. Same patented angled-cut key system, but the housing is slightly shorter. If your door has a 1-3/8″ bore and the faceplate sits flush without adapters, it’s likely a Classic.
- 3 series (discontinued): Still out there in Capitol Hill and Georgetown rowhouses. The cam geometry differs - a 3-series cylinder won’t time correctly in a Maxum housing, and vice versa.
We carry both OEM Medeco cylinders and quality aftermarket equivalents keyed to Medeco’s pin specifications. For a rental property or a secondary door, the aftermarket saves roughly $60-$90. For a primary entry in Washington’s wet winters, where temperature swings swell door frames and stress lock mechanics, we usually recommend OEM. The brass alloy in Medeco’s own cylinders handles that expansion cycle better.
Strongbox Lock & Safe Co. of Washington is an independent service provider - we’re not affiliated with Medeco - but we’ve installed and serviced their hardware since the Classic series was new.
Signs Your Medeco Deadbolt Installation Is Failing
- Key catches or hangs at the 10 or 2 o’clock position. The sidebar pins are losing their angled-seat engagement. In Washington’s humidity, dust and pollen pack into the pin chambers over years, accelerating wear on the precision angles that make Medeco pick-resistant.
- Bolt extends but won’t fully retract without jiggling. The cam tailpiece is rounding off or the bolt mechanism has dry grease turned to paste. We see this often in homes near Rock Creek Park where fine grit works its way indoors.
- Thumbturn spins freely with no bolt movement. The set screw connecting thumbturn to cam has backed out, or the cam itself has cracked. On older Classics, the pot-metal cam was a known weak point Medeco corrected in the Maxum redesign.
- Door must be lifted or pulled to get the key to turn. The strike plate has shifted, or the door frame has settled. In Washington’s clay-heavy soils, especially in Chevy Chase and Takoma, seasonal foundation movement throws off alignment faster than the lock itself wears out.
- Key works from outside but thumbturn is stiff inside. The interior cam is binding against a warped door or an over-tightened mounting screw. Sometimes it’s the lock, sometimes it’s the door - we check both before quoting.
Replacement Cost & What’s Included
For a complete Medeco deadbolt installation in Washington, here’s how pricing breaks down:
| Service | Price Range |
|---|---|
| Maxum 11* single-cylinder install (standard door prep) | $280-$350 |
| Maxum 11* double-cylinder install | $320-$400 |
| Classic series replacement (existing compatible prep) | $240-$310 |
| Door prep or strike relocation needed | +$40-$80 |
| Rekey to existing key | +$25-$45 |
The range depends on door thickness (1-3/8″ vs. 1-3/4″), whether the existing bore is standard or needs enlarging, and if the strike requires relocation due to frame settling. Every install includes the 90-Day Done Right Promise - backed in writing, no arguing, no extra paperwork. If the bolt drags or the key hangs, we come back. We quote the price before the truck moves. That’s just how this should work.
Seniors and veterans receive a permanent 5% discount. If your repair exceeds $250, ask about our $50 standing offer.
DIY or Call Us?
There’s honest work a homeowner can do. Check that the strike screws are tight. Spray a dry Teflon lube into the keyway - not WD-40, which gums up. Verify the door isn’t swollen from Washington’s summer humidity.
Where DIY goes wrong: Medeco’s sidebar mechanism requires precise pin-angle alignment during reassembly. The springs are small, under tension, and easy to launch across the room. More critically, if you remove the cylinder and lose the sidebar or bottom pins, you’ve turned a $300 job into a $500 job - assuming the parts are still available for your series. We’ve rescued plenty of disassembled Medeco cylinders from kitchen tables in Washington. No judgment. But if security matters enough that you bought Medeco, it’s worth having the install done by someone who can read the wear patterns and set the timing correctly.
Call (888) 545-8474 and we’ll talk through what you’re seeing. Estimates are free, and a live person answers - no voicemail, no callback queue.
FAQs
With normal use, 15-20 years before internal wear affects function. Washington’s humidity cycles and pollen load can shorten that to 10-12 years if the lock isn’t lubricated every few years. Call (888) 545-8474 and we’ll add you to our seasonal tune-up list - $89, and it catches problems before they strand you.
Sometimes. A sticky key or loose thumbturn often needs cleaning, lubrication, and a new set screw - not a full replacement. But if the sidebar pins are worn or the cam is cracked, repair costs approach replacement without the warranty coverage. We check both paths and tell you straight which makes sense.
Most residential Medeco deadbolt installations in Washington take 45 to 90 minutes from truck arrival. A standard replacement on a prepped door runs closer to 45 minutes. Door prep, frame adjustment, or matching to an existing master key system adds time. We give you a firm time estimate when we quote the price.
Yes. We carry Maxum 11* single and double-cylinder models in satin nickel and oil-rubbed bronze, plus Classic-series cylinders for older installations. If you need a finish or backset we don’t have on the truck, we fetch it - usually same day in Washington and nearby Maryland suburbs. Call (888) 545-8474 to confirm availability for your specific model.
Written by Dennis Wakefield, Owner & Master Locksmith, Strongbox Lock & Safe Co. of Washington at Strongbox Lock & Safe Co. of Washington, serving Washington and nearby areas.