The I=B=R School will host several two-day hydronic heating installation and design classes this spring. Attendees will learn how to design and install a hydronic heating system, the boiler, piping and its accessories with baseboard and radiators. The class will cover heat loss calculations, pipe-sizing, heating system design, control selection, boiler-sizing, baseboard and radiation selection, indirect water heating, zoning, wiring and circulator selection.