How Long Do Sealed Units Last?
A Winnipeg Homeowner’s Guide
Windows aren’t forever — especially in Winnipeg’s intense freeze-thaw climate. Learn how long sealed units last, what signs of failure to watch for, and how to extend their lifespan.
Average Lifespan of a Sealed Unit
Most double-pane windows last 15–20 years under normal conditions. In Winnipeg, where temperatures swing drastically between seasons, expect that range to shorten — especially if installation wasn’t done properly.
Average Lifespan of a Sealed Unit
Triple-pane units with warm edge spacers tend to resist stress better over time and can last 20–30 years when maintained well.
Early Signs of Sealed Unit Failure
Fog or moisture between panes- Condensation that doesn’t wipe off
- Glass feels colder than usual in winter
- Mineral streaks or hazing on the glass
Why Sealed Units Fail Sooner in Winnipeg
Temperature extremes, UV exposure, and shifting frames due to frost heave all contribute to stress on window seals. Even minor imperfections during installation can lead to premature failure.
What’s the Fix?
At MaxGlass, we replace only the sealed unit — not the entire window. This means:
- Lower cost than full window replacement
- Less mess and disruption
- Improved energy performance
Check out our foggy window repair service for more details.
Maintenance Tips to Extend Lifespan
- Keep window sills dry and well-ventilated
- Ensure proper installation with weather sealing
- Use blinds or curtains to protect from UV in summer