My windows are foggy - can they be fixed or do I need new ones?

Foggy windows can sometimes be repaired, but replacement is often the most cost-effective long-term solution. The answer depends on where the fogging is occurring and the age of your windows.

Interior fogging that wipes away easily is usually just condensation from indoor humidity and can be managed with better ventilation, exhaust fans, or a dehumidifier. However, fogging between glass panes indicates seal failure in double or triple-pane windows, which is a more serious issue.

When the seal around insulated glass units fails, moisture enters the space between panes and creates that permanent foggy appearance. While some companies offer "defogging" services that drill holes to remove moisture and insert vents, this eliminates the insulating properties of the window and often provides only temporary results. The argon or krypton gas that provides insulation escapes, and fogging frequently returns.

In Ottawa's climate, properly sealed windows are crucial for energy efficiency. Windows with failed seals lose significant insulating value, leading to higher heating costs during our cold winters. If your windows are over 15-20 years old and showing seal failure, replacement typically makes more financial sense than attempting repairs.

Modern replacement windows offer substantial improvements over older units - triple-pane glass, Low-E coatings, and better sealing technology that can qualify for Canada's Greener Homes Grant (up to $5,000 rebate). The energy savings from new windows often offset the replacement cost over time, especially with Ottawa's temperature extremes.

For a professional assessment of your foggy windows and to explore replacement options, request a quote from Ottawa Window Pros. We can evaluate whether repair or replacement makes the most sense for your specific situation and budget.

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