Collection · When the fabric deserves the unit
Passivhaus-grade ventilation
Primary question · Our build is targeting an airtightness below 1.0 ach. Which MVHR earns its place?
At the airtightness levels modern deep retrofits and new builds reach, the choice of MVHR stops being incidental and starts driving the rest of the engineering. The unit, the ducting and the commissioning are one decision.
The reference MVHR unit for genuinely airtight UK projects.
Sizing, ducting layout, commissioning. The decisions that decide everything.
Most MVHR disappointment is a commissioning story.
House Summary
If you only do one thing from this collection, do the first one. The rest compound; each step makes the next cheaper, easier or smaller.
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