Ventilation Guide

Check if your bathroom ventilation meets UK Building Regulations Part F.

Room Details

Room Dimensions (metres)

Length

Width

Height

Room volume: 12.0 m³

Room Type

Standard Bathroom

En-suite

Wet Room

Window Type

Openable Window

Fixed/Sealed Window

No Window

Ventilation Requirement

Window provides some ventilation

50 l/s

minimum extraction rate

Building Regs minimum15 l/s

Your room needs50 l/s

Recommended fan30+ l/s

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This guide is based on UK Building Regulations Part F (2021). Final specifications should be confirmed by a qualified installer. Internal bathrooms (no window) always require mechanical extraction.