We hear this question from homeowners all the time:

I think I need to replace my windows because I can always feel a cold draft when I am next to them. Are there any alternatives, since it’s such a pricey upgrade?

Surprising to many, replacement windows are not always the best solution to cold drafts – particularly for homeowners on a tight budget. So before running out to the local window retailer, be sure to consider other possible causes for drafts and their (often times) less expensive solutions.

Typically, the cold feeling you get when standing by a window is caused by a combination of radiant heat loss as your home’s heat is drawn directly through the glass, and air leaks that allow cold outside air to flow through your home. Swapping single-pane windows with double-pane replacements will help with radiant heat loss, but if your house isn’t well sealed and insulated, investing in costly new windows might not solve the problem.

Draftiness is usually the result of warm air rising and escaping into your attic through leaks in walls, ceilings and can lights. As the warm air escapes, it is replaced by cold air that flows in from poorly sealed crawlspaces and other low-lying areas. That’s when you feel the drafts.

Finding and sealing air leaks can have a huge impact on interior comfort. The average home leaks 100 percent of its heated air every hour. At Recurve, we prefer leakage rates closer to 35 percent, which seriously reduces drafts and energy waste.

In most homes, windows only account for a small fraction of the air that leaks out. And because replacement windows are such a big investment, it’s usually more cost-effective to tighten your home first by improving insulation and sealing air leaks– particularly in the attic and crawlspace. Your home will also feel warmer if you close your blinds or drapes at night to reduce the amount of radiant heat loss.

In any case, it’s best to begin with a professional audit of your home’s energy performance. By conducting a thorough inspection of the various elements that contribute to your home’s overall comfort and energy consumption – including insulation, heating and cooling systems, and duct systems – the auditor can help you figure out which improvements will give you the most bang for your buck. You might find that $2,000 worth of insulation and air sealing will have the same impact as a $20,000 window upgrade.

If you have enough money left in your remodeling budget, energy-efficient replacement windows can be a terrific option. We’ve seen impressive results from a line of fiberglass windows manufactured by Sunnyvale-based SeriousWindows. Their top-of-the line windows achieve an insulation rating of R-11, which is better than what many people have in their walls and ceilings.

Finally, no matter what home energy improvements you decide to make, be sure to take advantage of the tax credits and other incentives that are available for this kind of work. An experienced energy retrofit contractor will be able to tell which incentives are available in your area, and even help you with the necessary paperwork.