About
About Thermos Montreal
A local company born from a simple observation: too many Montrealers pay for a new window when a simple thermos replacement would do.
Our story
An idea born in the field
Thermos Montreal was born from a repeated observation in the field: when a window fogs up between the two panes, homeowners are often told to replace everything. Yet in the vast majority of cases, only the thermos — the sealed unit — is at fault.
Our mission is simple: offer an honest, durable and economical alternative. We replace the sealed unit within the existing frame, at a fraction of the price of a new window, without sacrificing quality or insulation.
Our values
What guides us
Honesty before sales
If a thermos is enough, we say so. If the whole window needs replacing, we refer you to our RBQ partners — free of charge, no hidden commission.
A durable solution
We replace the sealed unit with a new one, not a temporary "defogging" that masks the symptom without fixing the problem.
A local service
We know Montreal's buildings — triplexes, bungalows, condos — and we work on site throughout Greater Montreal.
Trust
Insurance and warranty
We are a fully insured company, every replacement is covered by a written warranty against seal failure, and we handle the process with your insurer. You leave with peace of mind.
Ready to trust us?
Discover our services
Ready for clear windows again?
Free quote, honest diagnosis and transparent pricing. Call us or request your quote now.
Request your free quote
Fast response, no obligation. The diagnosis is always free.