T‑Energy
A premium passive-standard window for energy-efficient and near-zero-energy homes. It keeps the warmth in, the noise out — and your heating bills noticeably lower.
A premium passive-standard window for energy-efficient and near-zero-energy homes. It keeps the warmth in, the noise out — and your heating bills noticeably lower.
Premium triple-glazed passive windows
If you are looking for the highest standard, going beyond current norms, and you aspire to passive or near-zero-energy construction, we have a premium solution for you.
BUDVAR T-Energy — triple-glazed passive windows that meet the most demanding criteria, offering the highest quality of thermal insulation. These are windows for those who prioritise maximum energy savings, maximum comfort of use and modern solutions.
See what’s inside.
Corner cross-section of the T‑Energy profile: six thermal chambers, steel core, EPDM gasket and double or triple glazing.
Six chambers form an air barrier that limits heat and noise transfer.
A closed steel profile ensures rigidity and stability of large constructions.
Durable EPDM gaskets ensure tightness, quiet and protection from draughts.
Swisspacer warm edge and low-E glass — low Ug value.
Engineering that works quietly.
Premium-class thermal insulation. Triple glazing with a Swisspacer warm edge spacer cuts heating bills by up to 30%.
* Uw value per EN ISO 10077-2 for a simple reference window measuring 1230 × 1480 mm with the option of standard triple glazing with a warm edge.
88 mm profile with steel reinforcements. Six air zones block the flow of heat and noise.
Noise reduction. EPDM gaskets seal off sound bridges.
Hardware with anti-prise mushroom cams and a reinforced handle.
With triple glazing and a Swisspacer warm edge spacer.
Choose your package.
Each variant differs in the number of gaskets and the glazing unit. Choose the one that suits your building.
Super-warm
Triple glazing with a Swisspacer warm-edge spacer and krypton filling. The highest thermal insulation — for passive and near-zero-energy homes.
Common to all variants
Choose the right glazing for your needs
The glass is a key part of any window — it shapes thermal insulation, sound insulation and security. We offer 11 patterned designs as well as functional glazing (absorptive, reflective, sound-reducing, toughened and laminated).
Patterned glass designs· 11 designs
They provide privacy while letting plenty of light through (80–90%).
Other glazing types· 5 types
Functional glazing matched to specific needs — protection from sun, noise or break-ins.
Available colours
PVC foil coloured throughout or laminated, UV-stable — with a multi-year colour guarantee. Pick a colour and see the window come to life.
The colour swatches and product visualisations shown above do not fully reflect the actual colours or the real material structure — they are intended only as an indicative visual reference of the final result.
T-Energy performs well in any room.
Compare with other uPVC models
Six core BUDVAR systems. Remove any models you don't want to compare — bring them back from the bar below.Scroll to see them all.
** Uw value per EN ISO 10077-2 for a simple reference window measuring 1230 × 1480 mm with the option of standard triple glazing with a warm edge.
Download the BUDVAR T‑Energy catalogue
Full technical specification, design, available colours, accessories and energy parameters — all in a single PDF document ready to download.
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Frequently asked questions
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