Windows

Why Are My Windows So Drafty, and Can I Fix Them?

July 9, 2026 Connecticut
Drafty window in a Connecticut home

You walk past a window in January and feel a cold breeze. Your heater runs, but the room never warms up. Drafty windows in Connecticut are one of the most common complaints we hear. They make rooms uncomfortable and push your heating bills up. The good news is that drafts have clear causes, and some you can fix in an afternoon.

Where Window Drafts Actually Come From

A draft means air is moving where it shouldn’t. In most homes, it sneaks in around the window frame, not through the glass. Old caulk shrinks and cracks. Weatherstripping wears out. Gaps open up between the frame and the wall.

Single-pane windows are another big culprit. They let cold pass straight through the glass, and many older Connecticut homes still have them. Add our cold winters and gusty coastal wind, and even a small opening lets in a real chill.

How to Track Down the Source

You can find most drafts yourself in a few minutes. On a windy day, run your hand slowly around the window edge and you’ll feel the cold spots. A lit candle or an incense stick works too. If the smoke pulls sideways, air is leaking there.

Check the corners, the sash, and the spot where the window meets the sill. Look at the caulk outside as well. If it’s cracked or peeling, that’s a clear entry point.

Quick Fixes That Might Buy You Time

If your windows are fairly new, a few small fixes can help. Fresh caulk around the frame seals up cracks. New weatherstripping tightens the sash. A window film kit adds a temporary barrier in winter. These fixes are cheap and work best when the window itself is still solid.

When It’s Time to Replace

If drafts show up in every room, or the windows are single-pane and decades old, replacement is usually the smarter long-term call. New, energy-efficient windows seal tight, cut drafts, and lower your bills. See our window installation and replacement options for a free estimate.