New ENERGY STAR qualified windows can help reduce your energy bill up to 15 percent. Estimated savings vary from region to region depending on current heating and cooling costs and are generally greatest where there are hot summers, cold winters or both.
In addition, ENERGY STAR qualified windows, doors, and skylights do more than just lower energy bills-they deliver more comfort, create less condensation, and protect your valuables from sun damage better than conventional clear-glass double-paned alternatives.
On cold winter nights, do you avoid seats near the window? The cold, inside surface of an inefficient window pulls heat away from your body, so you can feel chilly in a sweater with the thermostat at 70 degrees. With ENERGY STAR qualified windows, the interior glass stays warmer, so you can enjoy your window seat even when the temperature outside dips well below freezing.
On winter mornings, is there fog on the inside or the outside of your windows? If an inefficient window or window frame gets too cold, indoor moisture can condense or even freeze on the interior surface and then pool on the sill. Over time, chronic condensation can damage sills, cause paint to crack, and encourage the growth of mold. Advanced technologies enable ENERGY STAR qualified windows to keep the interior of the glass and frame warmer, reducing the potential for condensation and ensuring a clearer view on winter mornings.
In summer, do some of your rooms feel like a sauna? A typical double-paned, clear-glass window allows approximately 75 percent of the sun’s heat into your home. Most ENERGY STAR qualified windows transfer much less heat, typically without reducing visible light. You get the light you need without the uncomfortable heat.
Your favorite photograph, your child’s artwork and even your couch can fade or discolor after repeated exposure to direct sunlight. Most Low-E coatings, the same coatings that keep out the summer heat, can reduce fading by up to 75 percent. These coatings act like sunscreen for your house, blocking damaging ultraviolet rays without noticeably reducing visible light.