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The Best Smart Locks

Tested through 4,000 lock cycles, a battery drain test and a winter.

By Daniel Reyes, Smart Home Editor · Published August 11, 2026 · 2 min read

Modern cylinder lock on a dark front door

Photograph: Roland Pippes / StockSnap

Hearthline is editorially independent. When you buy through links on this page we may earn a commission, which funds our testing. It never changes what we recommend or how we score. How we make money.

A lock is the one smart device where failure means standing outside your house. We weighted reliability far above features.

How we tested

Each lock ran 4,000 motorised cycles, was left on a north-facing door through winter, and was tested for fingerprint read speed with cold and wet hands.

Retrofit or replace

Retrofit units keep your existing deadbolt and exterior hardware — faster, cheaper and usually reversible for renters. Full replacements look better and add keypad entry outside.

Our picks

Independently tested

Modern cylinder lock on a dark front door
Editor's Choice

Yale Assure Lock 2 Touch

Fast fingerprint entry, slim interior housing and genuine Matter support.

Score
8.5 / 10
Price band
$220 – $300

Best for: Renters and retrofit installs

Price band last checked 2026-08-11. Live pricing arrives with our retailer feed.

Methodology

Every product here was tested in a working home against standardised tasks. Scores are the mean of five measured criteria and are never adjusted for commercial reasons. How we test · How we review.

Frequently asked

What happens if the battery dies?
Every lock we recommend supports either a physical key or emergency power via USB-C or 9V contacts. Never buy one without a fallback.
Do smart locks invalidate home insurance?
Check your policy wording for a required lock standard. Retrofit locks that keep the original deadbolt usually satisfy it; full replacements may not.

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