Your house's windows can give you plenty of benefits, including sunlight, ventilation, and outdoor views. However, your house's windows can also create costly heat losses and heat gains, especially during winter and summer months.
Oftentimes, the worst culprits are poorly sealed, well-weathered windows that can allow heat to pass through freely. If your energy bills are skyrocketing, you can tackle your energy problem by taking a closer look at your house's windows.
Little cracks and gaps around your windows can be big energy wasters. One of the cheapest ways to fix window leaks is to apply new caulking and weather stripping. Before getting started, scrape off old caulking and paint scum with a putty knife. After removing the dried-up gunk, apply fresh caulking to the window frames' joints. You should also place new weather stripping between the window sashes and frames.
Energy Efficient Glass: Low -E Windows
Low-E glass helps minimize radiant heat passage. Older methods, such as tinted windows, help stop the passage of heat, but they also block light. Low-E glass blocks only a small amount of visible light, so houses with Low-E windows still receive a great deal of sunlight. Depending on the appropriate windows for your climate, you can purchase energy efficient Low-E windows in low solar gain (for warm southern climates), moderate solar gain, or high solar gain (for northern cool climates).
People with single-paned windows in their houses should consider buying double-paned replacement windows. While single-paned windows lose energy, double-paned windows have air or gas-filled spaces between each pane, which resists heat flow. Whether you buy brand-new double-paned windows for your house or just seal your window leaks, your energy efficient windows can be an important step toward reducing your utility bill.
Sources: EnergyGuide, Energy-Efficient Windows & BobVila, Using Windows to Beat the Heat