Answer:
There are four of these, but everyone's favorite seems to be spades.
What is all over a house?
It belongs to you, but other people use it more than you do. What is it?
Touch this and you'll regret it. But if it's cold, you won't forget it. What is it?
What cannot talk but will always reply when spoken to?
If itβs information you seek, come and see me. If itβs pairs of letters you need, I have consecutively three. What am I?