Smart Locks: Pros, Cons, and What to Know Before You Buy

Smart locks promise a life without fumbling for keys, and for many households they deliver. But they are also electronic devices with batteries, apps, and firmware, which means a different set of tradeoffs than a classic deadbolt. Here is the balanced view before you buy.

The pros are genuinely compelling. Keypad codes mean no more hiding spare keys or paying for lockouts, and you can give each family member, cleaner, or guest their own code. Many models log who entered and when, auto-lock behind you, and integrate with doorbell cameras and home assistants. For rental owners and busy families, remote code management alone can justify the purchase.

The cons deserve equal attention. Batteries die, usually with a low-battery warning you might ignore, so keep a physical key as backup or know your model's emergency power trick. Wi-Fi models can be finicky, and cheaper locks may have laggy apps or weak build quality. Upfront cost is higher too: expect $150 to $350 for a good lock plus installation if you do not DIY.

Fit matters more than features. Check your door thickness, backset, and bore hole size against the lock's requirements before ordering. Look for ANSI Grade 1 or 2 ratings, which indicate tested durability and security. A beautiful smart lock on a flimsy hollow-core door is security theater, so make sure the door and frame are solid first.

Installation is straightforward for handy homeowners, but professional installation guarantees proper alignment, which is the number one cause of smart lock problems. A misaligned strike plate drains batteries and strains the motor. A locksmith can install, align, and test the lock in one visit, and confirm your door is a good candidate before you spend a dime.

If your smart home plans go beyond the lock itself, think about power. Battery locks are simple, but wired video doorbells, smart chimes, and powered strikes may need low-voltage wiring or a transformer upgrade. For anything beyond batteries, loop in an electrician so the power side is done safely.

Buy the lock that fits your door, your tech comfort, and your household's habits. The best smart lock is the one everyone in the house actually uses correctly, with a backup plan for the day the batteries give up.