energy efficient windows

https://alpha-wiki.win/index.php/Window_Repair_DFW:_A_Practical_Guide_to_Keeping_Your_Home_Comfortable

I swapped out my old drafty windows for energy efficient ones last year. The difference is noticeable—the house stays warmer in winter without the heater running constantly, and my summer cooling costs dropped significantly. The double-pane glass and low-E coating keep the temperature steady, and I don't feel that cold draft near the glass anymore. It was an investment, but seeing the lower utility bills makes it worth it.