Replacing windows yourself might seem like a smart way to save money, but there are a few details that can quickly turn the project into a costly mistake.

Dear James: We get too much glare and heat through our dining room window. I installed window film in my former house, but it looked a mess. Do you have any installation tips so that it looks better? ...

If your current windows have broken panels, look worse for wear, or aren't energy-efficient, you might want to replace them. Alas, new ones can cost from $3,441 to $11,840, depending on the number of ...