Before making that HVAC purchase or even selecting the installing contractor, there are three important factors to investigate to ensure optimum comfort in your home for many years to come. So you are getting ready to replace an old HVAC or perhaps you are building your new dream home.
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#Residential load calculation tool manual
The size of the cooling equipment must be based on the same temperature and humidity conditions that were used to calculate the HVAC load calculation.ĪCCA Manual s residential equipment selection - The 2nd Step in the quality hvac design process These sizing limits ensure that equipment capacities meet the minimum needs of occupants while preventing the problems associated with oversizing. In addition, Manual S sets equipment sizing limits.
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HVAC Designs for Compliance with ACCA Manual S residential Hvac sizingĢ012 International Residential Code (IRC) clarifies the existing requirements for sizing HVAC equipment: "Heating and cooling equipment shall be sized in accordance with ACCA Manual S based on building loads calculated in accordance with ACCA Manual J."Īir Conditioning Contractors of America (ACCA) Manual S, Residential Heating and Cooling Equipment Selection, provides clear instructions for interpreting and applying original equipment manufacturer (OEM) expanded performance data to select equipment that meets application requirements (heating, sensible or latent cooling) for the applied design conditions used to calculate loads with ACCA Manual J, Residential Load Calculation.