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Protected: NatHERS vs Passive House: what we get wrong about energy efficiency in Australia

ByPowerhaus May 28, 2025May 28, 2025 Reading Time: 7 minutes

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Contents

Why high star ratings and European benchmarks aren't enough-and how to build homes that actually work.
The great debate: one energy efficiency rating to rule them all?
What Is NatHERS?
What Is Passive House (or passivhaus)?
- Key features:
- Passive House certification performance requirements
The assumptions behind the NatHERS and phpp thermal models
Why "efficiency" isn't so simple
What both NatHERS and Passive House get right
What neither system gets right
So... what should we be doing instead?
A smarter middle path: what we built
TL;DR: what to take away

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Protected: NatHERS vs Passive House: what we get wrong about energy efficiency in Australia

We need to talk about heat recovery ventilation systems

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