How can I avoid frozen locks?
I had to call an emergency locksmith service recently. The entry door of my house was locked up due to cold and, the usual key couldn't open it. I had to wait outside for a while until my wife reminded me to call an emergency locksmith service. Fortunately, we were able to find one nearby and he opened the door within 10 minutes. Since winter is coming, I am just wondering how can I avoid it happening again. How can I make sure that the door won't lock up again? Do I have to replace the lock with something else?