Add Yahoo as a preferred source to see more of our stories on Google. BanksPhotos/Getty Images Poorly sealed windows allow heat to enter your home during the summer and cool drafts during the winter.
The windows your grandparents never replaced are still outperforming modern ones.
Poorly sealed windows allow heat to enter your home during the summer and cool drafts during the winter. As a result, your HVAC unit works overtime to maintain your desired temperature, leading to ...