The homeowner wanted to proactively replace his 14-year-old water heater, so I installed a new 50-gallon water heater. Additionally, the recirculating pump was leaking, so I replaced it with a new Grundfos Alpha pump. I also installed check valves and a shut-off valve for both the water heater and the recirculating line. Furthermore, I replaced the single-wall and Wye combo for the water heater with new double-wall piping. After completing the installation, I insulated everything and thoroughly tested the system for leaks.