Low-E glass is designed with a thin metallic coating that reflects infrared energy while allowing visible light to pass through. This unique property enables the glass to control heat flow, keeping buildings cooler in the summer and warmer in the winter. By minimizing the amount of heat that escapes from indoor spaces, low-E glass significantly reduces the energy needed for heating and cooling. Consequently, property owners can see substantial savings on their energy bills, making low-E glass not only an environmentally friendly choice but also a cost-effective one.