Windows rarely fail all at once — they degrade slowly, and most homeowners don't notice until the discomfort, or the energy bill, becomes impossible to ignore. By the time the problem is obvious, it has usually been costing you money quietly for a long time. Here are six signs it's time to consider a replacement.

1. You Feel Drafts Even When They're Closed

If you can feel air moving around a closed window, the seal has failed. This isn't just uncomfortable — it's actively working against your air conditioning every single day, quietly inflating your electricity bill without you ever noticing the cause.

2. Condensation or Fogging Between Panes

Fog or moisture trapped between double-glazed panes means the seal has broken and the insulating gas has escaped. There's no fixing this on-site — the glass unit itself needs replacing, since the insulating performance cannot be restored once the seal has failed.

3. Difficulty Opening or Closing

Windows that stick, need force, or won't stay open on their own usually point to warped frames or worn hardware — problems that only get worse, and are rarely worth repeated repair once the frame itself has started to shift.

4. Outside Noise Feels Louder Than It Used To

If street noise has become more noticeable over time — without the street itself getting louder — your window's seal and glazing are no longer doing their job, and the acoustic gap will only continue to widen as the seal ages further.

5. Visible Frame Damage or Corrosion

Cracked, warped, or corroded frames are a structural issue, not a cosmetic one. Once a frame is compromised, no amount of sealing or adjustment restores it properly, and continuing to patch it usually costs more than a straightforward replacement.

6. Your Energy Bills Keep Climbing

If your cooling costs are rising without a clear reason, failing window seals are one of the most common — and most overlooked — culprits. New, properly sealed windows often pay for part of themselves in reduced energy use within the first few summers alone.