How to Know When Your Windows Are Failing

Your home’s windows might look fine at first glance, but under the surface, they could be causing comfort, safety or energy issues. If you’re wondering how to know when your windows are failing, here are six red flags you shouldn’t ignore. 

There’s a Constant Draft Near Your Windows 

If your living room feels chilly in the winter and hot during the summer despite your HVAC working overtime, you could be losing heat through poorly sealed or aged windows. 

Why It Matters: Drafts indicate that your windows aren’t properly insulating your home. 

Your Energy Bills Are Higher Than Usual

Have your heating or cooling costs spiked? Your windows could be the culprit, especially if they lack modern energy-efficient glass or have failing seals.

Tip: Look for ENERGY STAR®-rated replacement windows to maximize savings.

Moisture and Fog Build Up Inside the Glass 

This often points to a broken seal in double-pane windows, reducing their insulating ability and clouding your view. 

Solution: Replacing your windows with Renewal by Andersen’s High-Performance™ Low-E4® glass can prevent future issues.

You Struggle to Open or Close Them

Windows should operate easily and close securely. If yours don’t, that could impact safety, ventilation, and comfort.

Pro Tip: Consider sliding or casement windows that are easier to operate.

Your Windows Are Outdated or Don’t Match Your Home’s Style 

Sometimes it’s not just about performance — it’s about curb appeal. Older or mismatched windows can drag down your home’s value.

What to Do: Update with custom-fit, stylish options that elevate your home’s look and efficiency.

Don’t Settle for Failing Windows

Don’t wait until minor problems become big expenses. At Renewal by Andersen, we help homeowners identify the best replacement options with no pressure and no guesswork. Get started with a free consultation today! Our experts are here to help.