11 Indoor radiant heating systems; underfloor radiant heating systems; indoor radiant hydronic heating systems; heating systems comprised primarily of boilers, heat pumps, and heating panels, and also including electronic controllers for heating systems, computer networking hardware, thermostats, actuators, switches, electrical wire, and specially-adapted tubes, vales, pipes, and manifolds; underfloor heating systems comprised primarily of boilers, heat pumps, and heating panels, and also including electronic controllers for heating systems, computer networking hardware, thermostats, actuators, switches, electrical wire, and specially-adapted tubes, vales, pipes, and manifolds; hot water heaters; heating boilers; heating panels used for indoor and deck heating purposes; tubing, pipes and manifolds specially adapted for heating systems, through which warm or high temperature water circulates