

Maximum Efficiency. Minimal Maintenance.
Thermopane windows are a cornerstone of modern building performance offering superior insulation, reduced energy costs, and increased year-round comfort. At Centennial Glass, we specialize in the installation, repair, and replacement of commercial thermopane window systems for office buildings, schools, condos, government facilities, and more.
If you’re upgrading an aging building or designing new construction, our commercial glazing experts will help you select the right thermopane configuration to meet your building’s energy and acoustic needs.
Not sure if your current windows are underperforming?
What Are Thermopane Windows?
Thermopane windows are a type of insulated glass unit (IGU) consisting of two or more panes of glass, separated by an airspace and sealed along the edges. The sealed space may be filled with inert gas (such as argon) to enhance insulation, and coatings like Low-E are often applied to reflect heat and improve thermal performance.
At Centennial, our commercial thermopane solutions are built to provide:
- Superior energy efficiency and indoor temperature control
- Enhanced sound insulation for urban, medical, or educational settings
- Condensation control and internal climate stability
- UV protection and solar heat management (with Low-E coatings)

Want to dive deeper into IGUs?

Thermopane Window Repair & Replacement
While thermopane systems are designed for long-term performance, they can degrade over time due to seal failure, moisture infiltration, or cracked panes. We offer full-service repair and replacement of thermopane glass without disturbing the existing framing.
We repair:
- Fogged or condensation-filled units
- Cracked or shattered glass panes
- Failed thermal seals
- Units with deteriorated or outdated Low-E coatings
- Soundproofing issues caused by gas leakage or air gaps
Centennial uses advanced gauges and glass diagnostic tools to precisely match tint, coating, spacer thickness, and gas type, ensuring a seamless replacement.
Experiencing fogging or drafts?
Visit our Commercial Window Repair page to learn how we can help.
Ideal for High-Performance Buildings
We install thermopane windows across a wide range of commercial sectors:
Corporate offices and boardrooms
Educational facilities and lecture halls
Hospitals and healthcare centres
Condominiums and apartment towers
Government and municipal buildings
Retail and restaurant spaces
Thermopane systems are especially valuable in multi-tenant and climate-sensitive environments, where thermal control, noise reduction, and visual comfort are critical.
Thermopane Options & Upgrades
Centennial offers a wide variety of custom thermopane configurations, including:
- Double-pane and triple-pane units
- Argon or krypton gas-filled
- Low-E (hard or soft coat)
- Tinted and reflective finishes
- Internal grills or blinds (ideal for privacy or aesthetics)
- Impact-resistant or laminated options for added safety
Our team will help you evaluate U-values, solar heat gain coefficients (SHGC), and acoustic ratings based on your property’s design and usage.


Why Choose Centennial Glass?
- Over 55 years of commercial glazing experience
- Detailed product matching and system diagnostics
- Installed by certified, insured professionals
- Support for architects, contractors, and facility managers
- Full lifecycle support—from new installs to retrofit and replacement
Need thermopane windows for a high-efficiency upgrade or retrofit?
Let’s Build Comfort and Efficiency Into Your Glass
Centennial Glass installs high-performance thermopane windows that help commercial buildings cut costs, improve comfort, and achieve energy targets—without sacrificing aesthetics or longevity.
- Call 613-738-9500
- Visit Our Showroom at 8–855 Industrial Avenue Ottawa ON K1G 4L4
- Request a contractor quote