Technical Booklet K Ventilation·Page 22·2.11 - System 4
System 4: Continuous Mechanical Supply and Extract with Heat Recovery
System 4 uses continuous mechanical supply and extract with heat recovery (MVHR), with guidance on minimum provisions for extract and whole dwelling ventilation provided in paragraphs 2.85 to 2.104.
System 4 – Continuous mechanical supply and extract with heat recovery (MVHR). Guidance on minimum provisions for extract and whole dwelling ventilation is set out in paragraphs 2.85 to 2.104.
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