My door lock keeps freezing to the point I can’t open it, why does this happen?
...humidity
level in your home if it is too high, so first hit the hardware store and pick
up a hygrometer to measure the indoor relative humidity, They cost about 20
bucks. If you normally have high humidity (50% RH or more) it would be wise to
work to reduce it, and not just for your door knob but many other reasons...