1: STYLE IS KEY
Changing windows can completely change how your house looks, so rather than just replacing windows with replicas, look for window's that fit your personal style, as well as, the style of your home. Consider mutins or grids on a window to give your house a period look. Double hung windows will give you a traditional style while horizontal slider and awning windows are more modern design.
2: SAFETY AND SOUND FIRST
After you find the style you want, try out the window for security and noise abatement. Think about windows with laminated glass to reduce noise, if you live near a busy street or airport. Laminated glass will also hold up in extreme weather conditions and also help offer protection from intruders. Please be advised that this alternative could be double the budget.
3: MAINTENANCE TESTING
Here is the big question: How much maintenance do you want to do on your windows in the long run? If you have little time for household chores, then consider no-hassle hybrid cladding or vinyl framed windows rather than wood. Additionally, does your choice need repainting? Make sure to ask about warping, rotting and cracking. Consider double-hung windows for ease of cleaning from the inside. The is especially important if you have a multi-story home with windows that are difficult to reach.
4: ABOUT THE GLASS
Options include tempered impact glass, low-e glass that limits UV rays and glass that reduces heat loss while letting heat from sun to penetrate. Energy Star compliant windows enhance energy efficiency and make the house more comfortable. Some windows allow for better ventilation and others have a larger glass area allowing for more daylight or to capture the views. Also consider transoms or sidelights.
5: CHECKING THE PRICE
Always double check the price against competitors. There are quality windows available at all price levels. As a general rule, the choice of material and glass used in the frame will determine the price.
6: OTHER THINGS TO KNOW
Should your windows open for ventilation? Or stay closed to prevent energy loss? Do you have privacy issues to consider? How many windows do you need? And finally, measure the size of your rough openings.