One Take #8 - Passive House Reality Check

Air Quality Matters

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2M ago 11:27

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Gabriel Rojas and colleagues' comprehensive review examines indoor air quality in over 600 Passive Houses, revealing that properly-designed mechanical ventilation systems generally outperform conventional housing for background pollutants like CO2, VOCs and radon. Quality control makes a dramatic difference - a UK study found 100% of certified Passive Houses met required airflows while only 47% of non-certified MVHR homes even met basic building regulations.
• Certified Passive Houses show consistently better ventilation performance than non-certified buildings with similar technology
• Quality assurance processes are essential, not optional extras
• Cooking pollution creates a significant blind spot in Passive House design
• Recirculating cooker hoods fail to capture harmful PM2.5 particles, which remain trapped in airtight spaces
• New Passive House guidance now strongly recommends extracting cooker hoods venting outside
• Proper makeup air systems must be balanced with kitchen extraction
• Both certification rigor and comprehensive pollutant management are necessary for truly healthy homes
A review of the indoor air quality in residential Passive House dwellings

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Chapters

1. Introduction to Passive House Review (00:00:00)

2. Good News: Ventilation Benefits (00:02:15)

3. Quality Control Makes the Difference (00:04:25)

4. The Cooking Pollution Problem (00:06:05)

5. New Guidance for Kitchen Ventilation (00:08:24)

6. Final Verdict and Key Takeaways (00:10:35)

119 episodes

#Science #Simon Jones #Air Quality #Ventilation #Iaq #Workplace #Healthcare #Built Environment #Tech #Natural Sciences #Health and Well-Being #House #Podcasting Education