Prev2 of 5Next Types of Energy-efficient Windows Options include double or triple-pane windows, low-emissivity (Low-E) coatings, and gas-filled windows. Each type offers different levels of insulation and energy savings, suitable for various climates and needs. Prev2 of 5Next Types of Energy-efficient Windows Post navigation Reducing Phantom Loads in Your Home Weatherproofing Your Home: Tips and Tricks