Manual J Residential Load Calculation – The Correct Way To Size an HVAC System

Manual J,  or Residential Load Calculations are published by the Air Conditioning Contractors of America (ACCA). Manual J calculations are the recommended method for use in the United States. Correct HVAC system sizing requires an HVAC contractor or installer to consider many factors. Proper Manual J load calculations require much more than simply reading the nameplate of the existing HVAC condenser and air handler unit. Key factors for correct Manual J HVAC sizing for heating and cooling systems include the following: The local climate conditions Size, shape, and orientation of [ Read More ]