The US government Energy Star program has taken the guesswork out of selecting an appropriate LowE coating. The program has set minimum performance criteria for each of four climate zones. If you select an Energy Star compliant window for your climate zone, you are assured of having a LowE coating that has been optimized for your climate, and that your windows will be eligible for federal tax credits.
Be sure to ask for Energy Star when you are selecting your replacement windows. At Best Window Company, you are assured in writing that your windows will always be Energy Star compliant for your climate zone when you select the LowE glass upgrade for any of our windows and doors. Selecting LowE glass is a smart investment that will pay for itself quickly, keep your home more comfortable, and reduce fading of fabrics inside your home.