How Do You Calculate Heating & Air Conditioning Sizes For A Home?
Determining how big an air conditioning or heating system needs to be for a specific room or household begins with measuring the square footage of each living space. Focus on the rooms that will be occupied on a regular basis and avoid measuring rooms that will not likely be heated or cooled, such as garages or basements. Being able to calculate the square footage (or cubic footage) of each room is handy when using the “Rule of Thumb” in determining the size of an HVAC system, especially if consulting with an HVAC professional for advice. Determine the width and length of each inhabited room in your home. Do not bother with spaces that will not be connected to an HVAC system, such as basements or garages. Multiply the width times the length of each room. The resulting number will equal the square footage for that room. Add the number of square feet for each room together. This new number will be the total square footage, and it can be used to get a general idea for how big an HVAC syst