Low-E Performance with Low E Window Tint

I was told I have a Low-E Window, what does that mean?

Low-E windows offer year-round energy benefits by effectively reducing both solar heat gain in the summer and heat loss in the winter. Achieved through an added metallized coating applied during manufacturing, this feature proves particularly advantageous in colder climates during fall, winter, and early spring. Homes and buildings equipped with Low-E windows typically demonstrate lower heating energy consumption compared to those without them.

Why are Low-E Windows Important?

Fundamental principles of heat transfer dictate that heat naturally moves from warmer areas to cooler ones. Consequently, the heat generated by HVAC systems, be it from furnaces or boilers, tends to flow towards colder spaces, typically outside where temperatures are notably cooler. This heat disperses through the path of least resistance, often escaping through windows and other parts of the building envelope.

The metallized coating on a Low-E window bolsters resistance to this outward heat flow by reflecting it back indoors. This mechanism reduces the amount of heat lost to the exterior, effectively decreasing overall heat loss. Consequently, HVAC systems require less energy to maintain interior temperatures, resulting in reduced energy consumption and lower heating bills, regardless of whether the system is gas, electric, steam, or oil-powered.