Have you ever had someone ask you what sun zone youʻre in or tell you that youʻre in a 300 sun zone and had no idea what they were talking about? In case you have no idea what the term, “sun zone” is, here is a short description to help you.
Sun zones determine how many hours of sun your home sees on an average day. It is one of the steps that help the contractor determine the correct system sizing for your home. There are sun zone maps that help verify your zone.
How to use: Locate the area of your home is on the appropriate island map and which yellow solar radiation line is closest to the address. Then, check the Energy Unit Conversion Table to find the peak sun hours.