To further conserve energy, Andersen offers multiple energy-efficient coatings that can be applied to your triple pane windows. The more surfaces you have coated, the more control you will have over your home’s interior temperatures. You can choose one, two, or all three of the following glass coating options to boost the energy efficiency of your Andersen A-Series triple pane windows: Low-E4: Low-E, or low-emissivity, windows have a coating of metallic particles that hinder the surface’s ability to transfer heat. Low-E4 windows by Andersen also contain a layer of titanium dioxide that resists dirt, water spots, and debris, making them virtually maintenance-free. SmartSun: SmartSun glass also reduces thermal transfer, but it takes Low-E a step further by blocking solar heat that could drive up your summer cooling bills. This coating allows sunlight in, while still shielding you and your family against 95% of the sun’s harmful ultraviolet rays. HeatLock: In northern climates, a HeatLock coating added to the interior side of each glass pane further helps conserve precious warmth in the winter. Heat already in your home is reflected into the room so that less of it can transfer to outside. For the optimal choice of coating, consult with window contractors. They will consider all of the essential factors, including climate and the building’s characteristics, and offer an informed opinion on the ideal match.