Kris Grimes responded to a Saturday call to address issues with hot water pipe banging and the shower running hot then cold. Turns out a check valve was defective on a return line. Kris was great in explaining what the issue may be and answering all my questions. He quickly cutout the defective valve and replaced both the valve and a leaking shutoff on the cold intake into the water heater. Kris provided excellent service and I would highly recommend him.