If you have a sink near the shower, run it full blast on hot to flush the cold water from the pipe. This mainly saves time, but it also saves water if your sho

If you have a sink near the shower, run it full blast on hot to flush the cold water from the pipe. This mainly saves time, but it also saves water if your shower mixer valve doesn't go to 100% hot. (It's generally good to keep the hot limiter below 100%, to avoid full-body scalding.)