Property details
Enter the project name and property details to calculate the ventilation requirements.
Select the ventilation system
The system type determines which design rates and compliance checks apply.
Design air permeability
Select the design air permeability (m³/hr/m² at 50Pa). This determines which standard applies and what ventilation rates are required.
Dwelling storeys
Single storey dwellings require an additional 7,000 mm² background ventilation per TGD Part F 1.2.4.1.
Select the unit
Extract rooms
Add all wet rooms requiring extract ventilation.
Habitable rooms
Add all habitable rooms to build the background ventilator schedule.
Supply rooms
Enter area and ceiling height. Trickle rates distributed proportionally to room volume per TGD Part F Appendix 1, Example 2.