ATProto Browser

{
  "text": "Indoor air quality in UK homes is often poor. Most use ‘System 1’ ventilation (Part F of the B’Regs): trickle vents + intermittent extract fans.\n\nPassivHaus uses ‘System 4’ Mechanical Ventilation with Heat Recovery (MVHR) for continuous fresh air and energy efficiency.\n\n#PassivHaus #EnerPHit #MVHR",
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        "alt": "Intake filter (ISO ePM1 F7)—traps particles <1 micron (dust, pollen, bacteria).",
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        "alt": "Exhaust filter (ISO Coarse G4)—captures coarser particles.",
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  "createdAt": "2025-05-05T13:56:35.764Z"
}