Smart Lock Installation

A smart lock replaces or upgrades your deadbolt so you can open the door with a code, a phone, or a fingerprint instead of digging for keys. Installing one is part carpentry, part electronics, and part network setup. This guide explains what the job actually involves, so you know what to expect before anyone touches your door.

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Retrofit or Full Replacement: The First Decision

Smart locks come in two basic designs, and the right one depends on your door and your habits.

Retrofit models replace only the interior thumbturn. The outside of the door keeps its existing keyed cylinder, so your current keys still work and nothing changes from the street.
Full replacement models swap the entire deadbolt, inside and out. Most add a keypad, and many include a keyway that a locksmith can rekey to match your other house keys.

Renters and anyone who wants to keep their existing keys usually lean toward retrofit units. Full replacements make sense when the old deadbolt is worn out anyway or you want a keypad on the outside of the door.

What Installation Actually Involves

Most smart deadbolts are built to fit a standard American door prep: a 2-1/8 inch cross bore through the face of the door, a 1 inch edge bore for the bolt, and a backset of 2-3/8 or 2-3/4 inches. If your door matches, the mechanical part of the job is straightforward. If it does not, the door may need boring or a spacer kit.

Fit also depends on thickness. Most models cover doors from 1-3/8 to 1-3/4 inches. After the hardware is mounted, the lock has to be calibrated so the motor knows which direction is locked, then paired with its app and loaded with codes or fingerprints for each person who needs access.

Wi-Fi, Bluetooth, or a Hub: Choosing Connectivity

How a smart lock talks to your phone affects battery life and daily convenience.

Built-in Wi-Fi connects straight to your router, so you can lock and unlock from anywhere with no extra gear. It is also the biggest battery drain of the three.
Bluetooth sips power but only works when your phone is within range of the door.
Z-Wave, Zigbee, and Thread need a hub or smart-home controller, but they combine remote access with much better battery life, and Thread models tie into the Matter standard alongside your other smart-home devices.

Why Door Condition Makes or Breaks a Smart Lock

A motorized deadbolt is less forgiving than a hand-turned one. Your wrist can force a slightly misaligned bolt home; a small motor cannot. If the door has sagged on its hinges or the strike plate opening does not line up with the bolt, a smart lock will grind, jam halfway, or report itself as blocked.

Part of a proper installation is checking the swing of the door, tightening hinge screws, and adjusting the strike plate so the bolt glides in with no resistance. Sorting that out first is the difference between a lock that runs a year on one set of batteries and one that fails in a month. If you are considering a smart lock, call (916) 913-5080, describe your door and current deadbolt, and confirm whether this service can help before any visit is scheduled.

Frequently Asked Questions

Can I keep using my existing keys after a smart lock is installed?

Yes, two ways. A retrofit smart lock replaces only the interior thumbturn and leaves your existing keyed cylinder in place, so your current keys work exactly as before. With a full replacement smart deadbolt that includes a keyway, a locksmith can often rekey its cylinder to match your other house keys, so one key still opens everything. Keyless-only models are the exception, since they have no cylinder to rekey.

Why is my smart lock draining batteries so fast?

The usual culprit is the door, not the lock. A smart lock's motor has to throw the bolt into the strike plate opening, and if the door has sagged or the strike is misaligned, the motor grinds against resistance on every cycle and burns through batteries. Wi-Fi models also drain faster than Bluetooth or hub-based ones by design. Adjusting the hinges and strike plate usually restores normal battery life.

Will a smart lock still work if the power or internet goes out?

The lock itself will. Smart locks run on their own batteries, usually AA cells, so a household power outage does not affect locking or unlocking at the door. Keypad codes stored in the lock and any physical key override keep working too. What you lose during an internet outage is the remote side, meaning phone unlocking away from home, notifications, and voice control, until the connection returns.

Call (916) 913-5080 about smart lock installation.