Your Guide to Thermos Window Replacement in Montreal
Thermos windows, also known as insulated glass units (IGUs), are designed to provide superior insulation, reduce energy costs, and enhance home comfort. But if you’ve started noticing fogging or condensation inside the glass panes, you’re not alone. Many homeowners in Montreal and surrounding areas face this issue, often wondering:
- Why are my thermos windows fogging up?
- Is it possible to repair them, or do I need a full replacement?
- How can I prevent this issue in the future?
At Eco Green Windows, we specialize in high-quality thermos window replacement, ensuring your home stays energy-efficient, clear, and comfortable all year round. In this guide, we’ll break down why condensation happens, when it’s time to replace your windows, and how to choose the best solution for your home.
Why Do Thermos Windows Fog Up?
Understanding Condensation Between the Panes
Fogging inside thermos windows occurs when the seal between the panes fails, allowing moisture to enter the insulating space. This not only affects visibility but also reduces the window’s insulating properties, making your home less energy-efficient.
Common Causes of Thermos Window Fogging
- Seal Failure Over Time
Thermos windows are sealed during manufacturing to trap insulating gases like Argon or Krypton. Over time, temperature fluctuations and weather exposure can break down these seals. - Extreme Weather ConditionsIn Montreal’s climate, freezing winters and humid summers cause thermal expansion and contraction, putting stress on window seals.
- Poor Window Installation
If thermos windows aren’t installed correctly, gaps or structural weaknesses increase the risk of seal failure. - Low-Quality Window Materials
Cheap window frames, poor insulation spacers, and weak sealants can accelerate deterioration, leading to premature fogging.
Can Foggy Thermos Windows Be Repaired?
Repair vs. Replacement: What’s the Best Option?
Many homeowners wonder whether fogged-up thermos windows can be repaired instead of replaced. While some companies offer defogging treatments, the results are often temporary and do not restore full insulation.
Why Repairs Often Don’t Work
- Moisture inside the panes cannot be fully removed without breaking the seal.
- Insulating gas is lost once the seal fails, reducing energy efficiency.
- Seal failure is a progressive issue—even after defogging, condensation usually returns.
When to Consider a Full Thermos Window Replacement
✔ If condensation consistently appears between the panes.
✔ If your energy bills have increased due to heat loss.
✔ If the window feels drafty or has visible cracks.
✔ If your home feels too hot in summer or too cold in winter.
Replacing a failed thermos window with a high-performance insulated glass unit restores clarity, improves efficiency, and eliminates recurring condensation issues.
How Much Does Thermos Window Replacement Cost in Montreal?
Understanding Pricing & Investment Value
The cost of thermos window replacement depends on size, type of glass, and frame materials.
Average Price Ranges
- Standard Double-Pane Thermos Window: $400 – $2,000 per window (installed).
- Triple-Pane or Specialty Glass Windows: $1,500 – $3,000 per window.
- Full-Home Replacement (10+ Windows): $8,000 – $25,000 depending on the property.
Factors That Influence Cost
- Window Size & Customization – Larger or custom-shaped windows cost more.
- Glass Type – Low-E glass coatings, Argon/Krypton gas filling, and triple-pane windows improve efficiency but increase price.
- Frame Material – Vinyl, aluminum, and fiberglass frames have different insulation properties and durability.
- Installation Complexity – Retrofitting existing frames is cheaper than full-frame replacements.
How Energy-Efficient Thermos Windows Save You Money
The Long-Term Benefits of High-Quality Replacement Windows
Investing in energy-efficient thermos windows may have an upfront cost, but the long-term savings make it worthwhile.
✔ Lower Heating & Cooling Bills – Reduce energy loss and cut HVAC costs by up to 25%.
✔ Improved Home Comfort – No more cold drafts in winter or overheating in summer.
✔ Increased Home Value – Buyers look for energy-efficient upgrades, making your home more attractive.
✔ Noise Reduction – Insulated glass significantly reduces traffic and outdoor noise pollution.
At Eco Green Windows, we only use premium-quality thermos windows with advanced insulation technology to ensure maximum energy savings and durability.
How to Choose the Best Thermos Windows for Your Home
Key Features to Look for When Replacing Your Windows
When selecting new thermos windows, here’s what to consider:
✔ Double-Pane vs. Triple-Pane Glass – Triple-pane windows offer superior insulation but may not be necessary for every home.
✔ Low-E Coatings – Special coatings reflect heat, keeping homes cool in summer and warm in winter.
✔ Argon or Krypton Gas Fills – These gases improve thermal insulation, preventing heat loss.
✔ Durable Frame Materials – Vinyl, fiberglass, or hybrid frames resist wear and tear better than wood or aluminum.
Why Homeowners in Montreal Trust Eco Green Windows
Expert Thermos Window Replacement with a Customer-First Approach
At Eco Green Windows, we understand that replacing your windows is a major investment. That’s why we offer:
✔ Top-Quality Thermos Windows – Designed for Montreal’s harsh winters and humid summers.
✔ Certified Installation Professionals – Ensuring a perfect, airtight fit for maximum efficiency.
✔ Competitive Pricing & Financing Options – Making high-quality windows affordable for every homeowner.
✔ Industry-Leading Warranties – We stand behind our products with comprehensive warranties.
We take care of everything—from consultation to installation—so you can enjoy a clear, energy-efficient home with zero hassle.
Get a Free Quote for Thermos Window Replacement in Montreal
Upgrade to Energy-Efficient Windows Today
If you’re dealing with foggy, inefficient thermos windows, it’s time to upgrade to high-performance replacements that keep your home comfortable year-round.
📩 Email: Info@ecowindow.ca
📞 Toll-Free: (855) 994-4440
📍 Serving Montreal & Surrounding Areas
Contact us today for a free, no-obligation consultation. Discover the difference high-quality thermos windows can make in your home.
