Decision page
Repair the thermos or replace the window?
The right answer depends on the condition of your frame, not our interest. Here's how to decide honestly.
The right reflex
Two situations, two solutions
Our free diagnosis settles the question in a few minutes.
We replace just the thermos if…
- The fog is between the panes (broken seal)
- A pane is cracked or broken, but the frame is sound
- The window still opens and closes properly
- The frame shows no rot or warping
The most economical and durable solution in most cases.
We replace the window via RBQ partners if…
- The frame is rotten, warped or damaged
- It's outdated single glazing that deserves a real upgrade
- The opening mechanism is broken
- There are water or air leaks around the frame
- You're renovating or changing the style
Connection with trusted RBQ installers, at no cost.
Comparison
How much does it cost, concretely?
| Criteria | Replace the thermos | Replace the window |
|---|---|---|
| Solution | Sealed unit replacement | Full new window (installed) |
| Estimated cost | $150 – $450 | $700 – $1,200+ |
| Timeline | 24–72 h fabrication | Several weeks |
| Work | Frame kept, light install | Full removal and finishing |
| When to choose | Sound frame, only the glass is at fault | Frame or structure to redo |
Our promise of honesty
We will never push an unnecessary replacement. If a thermos is enough, that's what we'll recommend. If your window truly needs replacing, we'll tell you and connect you with a trusted RBQ installer — free of charge, with no hidden commission. Our reputation is worth more than a forced sale.
Useful links
Keep reading
FAQ
Frequently asked questions
How do I know if my frame is still good?
During the free diagnosis, we check the frame's solidity, the absence of rot and the proper functioning of the hardware. If the frame is sound, replacing the thermos is enough. Otherwise, we tell you frankly.
Will you push me to replace the whole window?
No, that's the opposite of our approach. Our promise of honesty is simple: if a thermos is enough, we say so. If the whole window needs replacing, we refer you to our RBQ partner installers, free of charge and with no hidden commission.
Does a cracked pane require a new window?
Not at all. If the frame is in good condition, a cracked or broken pane is replaced on its own, within the existing frame. It's fast and far less expensive than a full window.
Further reading

Ready for clear windows again?
Free quote, honest diagnosis and transparent pricing. Call us or request your quote now.
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