Before you dive into replacing your windows, the first step is to carefully evaluate the pros and cons. Replacing your windows is no small investment. The average cost to replace the windows in a home is in the five-figure range. Even if replacing your windows results in huge energy savings, it can take years and years for the investment to pay off.

If you’re truly ready to replace them—whether it’s for energy and comfort, an aesthetic upgrade, or your current windows are simply beyond repair—here are a few things to keep in mind.

Pick the right materials
Window materials include vinyl, fiberglass, composite, wood, and aluminum. There are several factors that should go into deciding on the best material for your home, such as durability, energy efficiency, maintenance requirements, and even the style of your home. Some materials look great on one architectural style, but totally clash with others.

Carefully consider add-on features
Beyond choosing a window material and style, you’ll face another series of choices for add-on features. There are impact-resistant windows, extra panes, gas-filled windows, climate control coatings, and more. Most add-ons will significantly increase the price for each window, and in many instances, the long-term savings don’t justify the extra cost. Do the math and consider how long it will take for the extra features to pay for themselves.