You can reduce energy costs by installing energy-efficient windows in your home. If your budget is tight, energy efficiency improvements to existing windows can also help.
Improving the Energy Efficiency of Existing Windows
You can improve the energy efficiency of existing double window by adding storm windows, caulking and weatherstripping, and using window treatments or coverings.
Adding storm windows can reduce air leakage and improve comfort.
Caulking and weatherstripping can reduce air leakage around windows. Use caulk for stationary cracks, gaps, or joints less than one-quarter-inch wide, and weatherstripping for building components that move, such as doors and operable windows.
Window treatments or coverings can reduce heat loss in the winter and heat gain in the summer. Most window treatments, however, aren't effective at reducing air leakage or infiltration.
Selecting New Energy-Efficient Windows
If your home has very old and/or inefficient windows, it might be more cost-effective to replace them than to try to improve their energy efficiency. New, energy-efficient windows eventually pay for themselves through lower heating and cooling costs, and sometimes even lighting costs.
When properly selected and installed, energy-efficient windows can help minimize your heating, cooling, and lighting costs.
Improving window performance in your home involves design, selection, and installation.