The shower was not used for app. 24 hrs. I the turned it on and all I get is very little on the cold side. It is very cold in NY. However, I placed a space heater in the basement under the pipe area and cut the wall open. I also cahnged the shower carteriage. The space heater has been on for about six hours. The the temperature is now 85 degrees. In the area but the entire length of the pipe is not exposed.

Does pipe go up through a an exterior wall?