Replacing your windows is a major investment — and in Ottawa’s climate, mistakes can become expensive very quickly.
Before choosing a contractor, here are the most common window replacement mistakes Ottawa homeowners should avoid.
1. Choosing Based on Price Alone
The lowest quote is rarely the best value.
Cheap window replacement often means:
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Lower-grade materials
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Poor insulation performance
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Inexperienced installers
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Weak warranty coverage
In Ottawa’s extreme winters, long-term performance matters far more than upfront price.
2. Ignoring Energy Performance Ratings
Not all ENERGY STAR® windows are equal.
Homeowners should verify:
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U-factor ratings
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Solar Heat Gain Coefficient (SHGC)
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Proper climate zone certification for Ontario
Installing the wrong performance level can significantly reduce long-term energy savings — especially during Ottawa’s cold winter months.
3. Skipping a Written Contract
Never rely on verbal agreements.
A professional Ottawa window company should always provide:
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Detailed written quotes
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Product specifications
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Installation scope
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Warranty documentation
Clear paperwork protects both you and the installer.
4. Overlooking Installation Quality
Even the highest-quality windows can fail if installed incorrectly.
Common installation problems include:
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Improper flashing
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Poor air sealing
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Incorrect leveling
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Water intrusion issues
Always confirm your installer is licensed, insured, and experienced with Ottawa building standards.
5. Not Considering Ottawa’s Climate
Ottawa experiences:
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Extreme cold winters
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Humidity fluctuations
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Freeze-thaw cycles
Windows must be selected and installed with local weather conditions in mind to prevent long-term structural and efficiency issues.
Work With Experienced Ottawa Professionals
Avoiding these mistakes starts with choosing the right installer.
Before making a decision, compare trusted window replacement Ottawa experts here:
Explore trusted options in our
Top Window Companies in Ottawa
comparison guide.
Upgrading windows isn’t just about efficiency — it’s about curb appeal.
Here are the best window styles for Ottawa homes:
Casement Windows
Excellent seal. Perfect for harsh winters.
Double Hung Windows
Classic and easy to clean.
Slider Windows
Modern look, space efficient.
Bay & Bow Windows
Increase natural light and home value.
Style matters — but installation matters more.
Find trusted installers among the top window companies in Ottawa here: