Heat recovery ventilation - Build 169(2018)
- Heat recovery ventilation
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- Information provider
- BRANZ Limited
- Information type
- BUILD article
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A recent BRANZ project on energy-efficient ventilation looked at the performance of a heat recovery ventilation system installed in a test house.
We often hear of a reluctance by occupants to ventilate their house due to the perception that too much heat is lost via outgoing air. This has given rise to the increased popularity of ventilation systems that recover heat from the outgoing ventilated air and use it to heat up the colder outside air brought in to replace it. These systems are often referred to as balanced heat recovery ventilation.
This article includes:
- Extremely efficient if well designed
- Best suited to more airtight homes
- Pointers to improve efficiency
- Unheated rooms can reduce efficiency
- It’s not for all homes