There’s no denying the vital role that heating, ventilation, and air conditioning (HVAC) systems play in maintaining a comfortable and healthy indoor environment. One of the most crucial components within an HVAC unit is the heat exchanger, responsible for transferring heat between two fluid mediums, thereby ensuring efficient heat distribution. Over time, however, wear and tear can cause these heat exchangers to malfunction or fail altogether, necessitating their replacement. In this article, we will delve into the order of function for HVAC heat exchanger replacement, providing essential insights for both homeowners and HVAC technicians.