Measure the diameter of the holes currently cut out of your door so you can select a new door lock that fits those dimensions.
How to change door lock keys.
Having the combination changed is more affordable.
Before you learn how to change door locks measure the space where you ll install the replacement.
If you have a window in or next to the door a lock with key cylinders on both sides is preferable as long as local codes allow and you keep a key within reach.
Next put a new latch in and replace the door knob.
To change the lock on a regular door knob first use a screwdriver to remove the door knob and the old latch.
Once you have the kit remove the lock cylinder from the door knob so you can change the pins inside.
Take care to measure carefully as matching the size can be especially problematic in older homes.
Alternatively you can buy a re keying kit for the lock you already have.
If your house keys are ever stolen one of your first orders of business is changing the locks on your doors so no one can gain access.
I don t recommend the you change it locks too many ways to screw them up.
However rekeying a lock can also improve a building s security measures after a new home construction during which a number of people might have copies of door keys including contractors.
Change the locks when your keys have been lost or stolen.