So I recently had a new t&p valve installed on my water heater thinking that was the cause of water coming out of it. It didn't fix the problem. After showering one loud pop can be heard and then eventually maybe 30 minutes later I will find water in the bucket I put underneath the valve. Trying to figure out where the popping is coming from...I can't tell if it is the water heater or expansion tank. And I'm not understanding why the water that comes out of the valve is cold. I would have thought it to be at least warm water?