Thermal optimisation of building products
The Passive House Institute provides consultancy on the thermal optimisation of building products from the very beginning of the process through to pontetial Passive House Component Certification.
In addition to other tools, we make use of two and three dimensional as well as dynamic thermal flow analyses.
Example 1: Insulated window frame
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| Frame profile | Timber exterior insulation finishing system (EIFS) | insulated PVC profile |
| Frame U-Value Uf [W/(m²K)] | 0.62 | 0.69 |
| Elevation width [mm] | 131 | 120 |
| Edge bond ψg [W/(mK)] | 0.031 | 0.029 |
| Glas rebate d [mm] | 26 | 30 |
| Glazing (44 mm) Ug [W/(m²K)] | 0.70 | 0.70 |
Example 2: External wall connection to unheated cellar ceiling
U-Value (External wall) = 0.12 W/(m²K) Thermal bridge coefficient: |
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| Next Courses |
PHPP Expert
Passive House Designer / Consultant
Construction Verifier
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e-learning
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iPHA Webinar "Certified Construction and Renovation Systems for Passive House buildings" | July 2, 2025 (9am and 6pm)
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Passive House Open Days |
7 - 9 November 2025
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24 - 25 April 2026, Essen, Germany
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| Component Database |
Passive House
Component Database
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designPH
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NEW: PHPP 10 (2021)
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Seals for Certified Passive House Components
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EnerPHit -
PHI certification for retrofits
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Wall plaque
for certified Passive Houses
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Passive Houses for different climate zones
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Retrofits with Passive House components -
EnerPHit Planner Handbook
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Overview of contents
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