What do heat gain and heat loss mean?
Heat gain and heat loss both describe the same action, just in different directions. Heat gain involves heat from outside coming into your home through the processes of conduction, convection, and radiation. Heat loss involves heat from inside transferring outside by the same processes. Windows and patio doors are crucial areas for heat gain and loss, as they are usually the largest openings in your home and therefore are most vulnerable to heat gain and loss. That’s why it’s so important to get energy-efficient windows and doors.
