The client requested the installation of a Navien 240A2 tankless water heater. Our team installed the unit, which includes a built-in recirculation pump and check valve for improved efficiency and convenience. The installation process involved adding an expansion tank, running new PVC venting, and adjusting water and gas lines for proper connections. We also installed hot and cold isolation valves, a recirculation shut-off valve, and a condensate drain line to ensure a complete and functional setup.