Upon inspection, the customer reported that while insulating the piping, a staple had punctured the 3/8” PEX supply line. Although the customer had the zone shut off, the line continued to drip. With the customer’s approval, I replaced the damaged section with a new piece of PEX and installed two couplings. I also added two hangers to properly support the piping. I then purged the zone; the radiant system contained a significant amount of air, but I was able to remove as much as possible. The system’s air vent should clear the remaining air. At this time, the system is operating as expected.