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MVHR Whole-Dwelling Sizing
Size a continuous mechanical supply-and-extract heat-recovery system to Approved Document F 2021: whole-dwelling rate, per-room extract, boost and SFP/heat-exchanger advisory.
The Ensign ToolboxMVHR Whole-Dwelling SizingSize a continuous mechanical supply-and-extract heat-recovery system to Approved Document F 2021: whole-dwelling rate, per-room extract, boost and SFP/heat-exchanger advisory.
Dwelling
no.
Table 1.3 lookup (+6 L/s per bedroom beyond 5)
m²
All floors summed (para 1.24a — 0.3 L/s per m²)
Wet rooms (Table 1.2)
no.
Boost/high rate 13 L/s per room
no.
Boost/high rate 8 L/s per room
no.
Boost/high rate 8 L/s per room
no.
Boost/high rate 6 L/s per room
Enter the dwelling details and at least one wet room