Replacing both the lever and deadbolt with connected smart locks is an expensive proposition. My recommendation solution is to replace the levers with standard passage levers (i.e. no lock in the lever) and the deadbolt with smart deadbolt. This is my recommended “best practice” for a few reasons:
- Cost: Connected lever and deadbolt locks are roughly the same price, and passage levers are generally inexpensive.
- Selection: There are only a few connected lever locks to choose from, but many different connected deadbolt locks.
- Security: Deadbolt provides greater security than a lever when it comes to forced entry.
- Simplicity: If you do not replace both locks, then you still will need to carry (or exchange) keys because the lever could be locked.
If you just want ensure that all exterior doors get locked at night, then just replace the deadbolts with connected locks and replace the levers later on.
I’ve had good luck with the Schlage Connect locks, and recently purchased a Yale Assure lock with a Z-wave Plus module. The Yale app for its lock sucks, but it has interchangeable Z-wave Plus and Zigbee modules. Once connected with SmartThings I never opened the app again. The Yale lock does seem to have a more finicky touchscreen than the Schlage, but I may just have a partially defective touchscreen so I’m withholding full judgement.