Window companies will not just have a variety of windows for you to buy. No, they have much more to offer. Window companies will know how to repair a broken window, how to fix broken glass, how to fix a broken window pane, and how to do window scratch repair.
On top of those standards, they can also offer Aquapel glass treatment. Aquapel is a rain repellent that uses a proprietary technology that creates an actual chemical bond with the glass of your windshield. Because the bond is chemical, the effects of the treatment can last for months. As opposed to the embarrassing cousin to Aquapel, Rain X, which is silicon based, meaning that it merely coats your windshield, and does not last nearly as long.
Window companies know how to repair a broken window by either replacing the glass, or sometimes you can get a film put over the old glass, and no one will know the difference. This specially treated film works to protect from heat loss in the winter, and heat intrusion during the summer. If you have the film professionally installed, it can actually be considerably less expensive than buying completely new replacement windows.
That being said, do not completely rule out replacement windows altogether, because they are truly the most effective way to save on heat and energy bills. The typical homeowner can actually get a 71 percent return on investment with replacement windows, just through energy cost savings. Replacing single pane windows can net about $400 a year in energy savings. Not to mention that all of the expenses put toward the replacing of the windows can go to a tax deduction when you sell the house. So enjoy the savings and save your receipts.
If you have rattling panes, errant cross breezes, blatant drafts, or if your panes are visibly collecting condensation, frost or ice, it is about time that you look into window replacement. Think of it as a long term investment. I know it is expensive at first, but you will be happier immediately, and earn your money back in no time through energy savings and tax deductions.