Contractors face the unknown when they tackle problems hidden inside closed structures. Stud sensors and electronic scanners — two still-evolving technologies that use radar to locate objects behind or embedded in materials — can help, but their ability to identify wood and metal framing, electrical wiring, broken or lost parts, misplaced tools, and other critically important objects is limited.
Fortunately, there's another category of electronic tools that can actually see into closed cavities.
Building code requirements limiting energy and water use and government initiatives encouraging conservation are becoming increasingly important as population growth and electrical consumption increase demand on water and energy supplies.
An on-demand tankless water heater can help.