As a designer/installer of any hydronic radiant system (especially one that incorporates hydro-air, old preexisting standing cast iron radiators and an indirect water heater), you have dozens of steps involved that are not unlike setting up a winding row of dominoes. Failure of one or more can cause the entire row to fall, and with that goes the customer’s faith and trust in you. The advanced training I received from the RPA (Radiant Panel Association, now Radiant Professionals Alliance), has been instrumental in conducting forensic analysis of hydronic and electric radiant systems that failed to meet the promise of extremely comfortable, reliable and healthy heating/cooling systems. This case, however, threw me a curve ball!

The owner complained about the following things: