(Don’t) Love that Dirty Water…

Many buildings have at least one HVAC piping system that is used to provide comfort to occupants or handle a process. These systems typically include hot water, condenser water, chilled water and steam. The intent of this article is to discuss common issues faced with reusing existing piping infrastructure and recommended maintenance of piping to prolong life and increase reliability.


The most common materials used for piping in HVAC are steel and copper. Steel is generally reserved for piping larger than 2” but in many buildings older than 20 years it is common to s