Thermos replacement in Gatineau

 Are your windows fogged up? Do you see condensation or fog between the panes? Before replacing your entire window unit, know that there is a much more economical solution: replacing the double glazing.

At Desrochers Doors and Windows, we have been offering thermos replacement in Gatineau and throughout the Outaouais region since 1985. Our team assesses your windows and offers you the most honest solution — without selling you more than you need.

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What is a window thermos?

A double-glazed unit—also called a sealed unit or insulating glass unit—is an assembly formed by two or three panes of glass separated by a layer of air or argon gas. This is what provides the thermal and acoustic insulation of your windows.

Over time, the seal degrades due to temperature variations, humidity, and UV rays. Humid air seeps between the panes, creating condensation that's impossible to clean—a sign that your double-glazed unit has lost its insulating properties.

Replacing a thermos unit or replacing a window: what's the difference?

If your frame is still in good condition, there's no reason to replace the entire window. Replacing the double-glazed unit involves removing only the defective glass and replacing it with a new, high-performance unit—while keeping your existing frame. The advantages are significant:

  •  Substantial savings: replacing just the thermos costs a fraction of the price of a new window — sometimes up to a third of the total cost.
  • Energy efficiency restored: a new thermos with low-E film and argon filling restores your windows' insulation performance and reduces your heating bills.
  • Quick and clean intervention: no demolition, no major work. The installation is discreet and is completed in one day in most cases.
  • Reduced environmental impact: less material thrown away, less waste sent to a landfill.


When should you replace your thermos?

Here are the signs that indicate your thermos needs replacing:

  • Persistent fogging or condensation between the two panes of glass
  • Frost that forms inside during winter
  • A drafty feeling despite the windows being closed.
  • Significant heat loss near the windows
  • Unexplained increase in your energy bills
  • If you notice any of these symptoms, contact us for a free in-home assessment. Our technicians will determine if replacing the double-glazed unit is sufficient, or if a new window is necessary.


Our thermos replacement service in Gatineau and the Outaouais region

Desrochers works on all types of windows, regardless of brand or model—aluminum, PVC, wood, or hybrid. We take precise measurements on-site, order your custom-made double-glazed unit, and perform the installation. We serve Gatineau, Hull, Aylmer, Buckingham, Chelsea, Cantley, Val-des-Monts, Ottawa, Orléans, Kanata, and Rockland.


Frequently Asked Questions

 How much does it cost to replace a thermos in Gatineau?

The cost varies depending on the size and type of glazing chosen. In all cases, replacing the double-glazed unit is significantly less expensive than replacing the entire window. Contact us for a free, no-obligation quote.


What is the difference between defrosting and replacing a thermos?

Defogging is a temporary solution that involves piercing the double-glazed unit to remove the moisture. Replacing the double-glazed unit is a permanent solution: the defective glass is completely replaced with a new, guaranteed unit. We always recommend replacement for a lasting result.


Is my window frame still salvageable?

In most cases, yes. If the frame shows no signs of deformation, rot, or structural damage, replacing only the insulated glass unit is sufficient. Our technicians will assess the condition of your frames during their visit.


Do you offer a guarantee on thermos replacements?

Yes. As with all our work, we offer a warranty on products and labor. Our team is certified by the Régie du bâtiment du Québec (RBQ).


Free quote for thermos replacement in Gatineau

Since 1985, Desrochers Doors and Windows has built its reputation on quality, transparency, and respect for its customers. We come to your home to assess your windows and advise you honestly—without pressure and at no cost.

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Thermos replacement

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Thermos replacement