New windows might cut your air conditioning bills

You’ll know you need new windows when…

…You realize the ones in your house have single panes of glass. You can’t even buy those anymore because they’re so energy-inefficient. Replace them with double- or triple-pane windows, which will help lower your heating and cooling costs and make your home feel more comfortable.

…You see condensation on the inside of the glass on double- or triple-pane windows. That’s usually an indication of a seal failure, which will render the window far less efficient. You might not need to replace the whole window, but you should replace the glass.

…You have trouble opening or closing the window. Windows that are hard to move, won’t stay open or are hard to lock need replacing.

…Your house is noisy—from the outside in. If you live near a busy street and can hear every car that passes by, new windows will help solve your problem. Thicker glass keeps out more noise.