Not a single quantity of heat, but an amount of heat that must be continually (at least for the worst case hour) removed or added to maintain the desired indoor temperature. ![]() So what are heating and cooling loads? As pertains to heating and cooling equipment (an HVAC System), a load is a rate of heat transfer. ![]() Such loads are measured in pounds, kips, or kilograms, depending on the units involved. ![]() All of those loads are a "weight" to be carried or supported in some way. When most people hear the word "load" they naturally think of a load of firewood they carry into the house, or a load of dirt in a dump truck, or maybe even a load held up by a beam or structural member. To help the lay person, some definitions are in order. This article is intended to be understood by both the lay person and the HVAC professional. This article discusses both commercial and residential HVAC (heating, ventilation and air conditioning) load calculation methods, and explains why results are often so different between methods. ![]() HVAC Peak Load Calculation Methods – History and Comparisons HVAC Peak Load Calculation Methods – History and Comparisonsīy Bill Smith, president of Elite Software
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