The Bottom Line Hiring a professional to clean all your home's windows can cost $150 to $300. However, homeowners can expect to pay between $10 and $15 for a professional to clean an average window, or between $4 and $11 for each pane of glass.

Extend Window Life These marks can weaken panes, potentially leading to cracks, chipping and other expensive damages. Professional window cleaners will extend the life of your windows by using their expertise and specialty cleaning process to maintain your windows.

Try a 50/50 solution of vinegar and water for a streak-free clean. You can use a spray bottle or dip a rag in the solution, just like you would an ordinary cleaner. If you are worried about the fumes, only use vinegar for outdoor windows or mix a couple drops of essential oils to counteract the smell.