How do you calculate zones for air conditioning?

Zones for air conditioning are determined by calculating the length of time light and heat are received from the sun throughout a house at various parts of the day.

According to home building experts at Perfect Home HVAC Design, zoning a home's heating, air conditioning and lighting systems to work with the natural light and heat of the sun extends the life of heating units and air conditioners by reducing the amount of time that they must cycle on and off during the day. Zoning also cuts down on heating and air conditioning costs by maximizing efficiency by harnessing and using the natural resources of the sun.