Lowtech Graph
Stale/Humid Air
Indoor air requiring exhaust or treatment
Produced by
Cross-ventilation (opposed openings)
Stack-effect / solar chimney ventilation
Localised extraction at odor sources (kitchen, bathroom)
Consumed by
Mechanical ventilation with heat recovery (MVHR)
Localised extraction at odor sources (kitchen, bathroom)
Decentralised single-room heat-recovery ventilators
DIY activated-charcoal air filter
Slate-clad solar air heater (wall-mounted thermosiphon collector)