A smart lock can let you open the door with a code, your phone or a fingerprint, and give family, sitters or contractors their own access. It only works well if it fits your door and is set up correctly. Jose M. Hernandez Jr., owner of Omega Locksmith in Chicago, explains what to check before you buy, how installation works and when to call a professional.
1. Check the door first
A smart deadbolt uses a small motor to throw the bolt. If the door has to be pushed, lifted or pulled to lock, the motor will strain, drain batteries and may jam. Close the door and turn the current deadbolt by hand. It should move smoothly without rubbing. If it does not, fix the alignment or strike before adding a smart lock.
2. Measure for compatibility
- Door thickness: most residential smart locks fit standard door thicknesses. Thick or thin doors may need an adapter kit.
- Backset: the distance from the door edge to the center of the lock hole, usually 2-3/8 or 2-3/4 inches.
- Bore hole: the round hole through the door, usually 2-1/8 inches for a deadbolt.
- Lock type: mortise locks, common in older Chicago buildings and storefronts, need a smart lock made for mortise hardware.
Not sure what you have? Our guide to door lock types can help you identify it.
3. Choose the right kind of smart lock
- Keypad deadbolt: opens with a code and a key. No app needed for basic use.
- Retrofit smart lock: replaces only the inside thumb turn and keeps your existing keys. Useful for renters who need permission to change hardware.
- Full smart deadbolt: replaces the whole deadbolt and adds app control, logs and remote access.
- Fingerprint (biometric) lock: convenient for families, but still needs a backup code or key.
One option we install is the Lockly Guard Defender.
4. Decide how it will connect
Some locks connect by Bluetooth only and work when your phone is nearby. Others use Wi-Fi, or a hub using Z-Wave, Zigbee, Thread or Matter, for remote access. Check that the lock works with the phone and smart-home system you already use before you buy.
5. Plan for Chicago weather
Cold weather shortens battery life, and an exterior keypad faces snow, rain and road salt. Choose a lock rated for outdoor use, replace batteries before winter, and keep a working backup key or other override. Never rely on a smart lock with no way in if the batteries die.
6. Installation: what is involved
On a standard door with a deadbolt that already works well, many smart locks install with a screwdriver by following the manufacturer’s steps: remove the old deadbolt, fit the new bolt and exterior piece, mount the interior unit, then calibrate the lock and set up the app or codes.
Call a locksmith when:
- The door does not latch or lock smoothly.
- The holes do not match the new lock, or the door needs drilling.
- You have a mortise lock, a storefront door or a metal door.
- You want several doors to use the same key or code system.
- You rent or live in a condo and need the work done to building standards.
For typical prices, see how much smart lock installation costs.
7. Set it up securely
- Change any default codes and the admin password right away.
- Give each person their own code so you can remove one without changing everyone’s.
- Delete codes for people who no longer need access.
- Turn on two-factor sign-in for the lock’s app and install firmware updates.
Businesses have different needs, such as schedules, employee turnover and exit requirements. Read are smart locks safe for Chicago businesses or see our access control service.
Related reading: rekey or replace your locks and 20 services a Chicago locksmith provides.
Omega Locksmith is located at 4346 W 51st St, Chicago, IL 60632. Owner Jose M. Hernandez Jr. holds individual Illinois locksmith license 191-000821. Call (773) 277-5625 or request smart lock installation.