Settings
Design preferences and room airflow defaults. Changes apply to future calculations.
Unit Selection
Controls how MVHR units are ranked when selecting equipment in Stage 4.
60%
45%55%65%75%
The MVHR unit will be selected so it runs at approximately this percentage of its rated capacity during normal operation. A lower value selects a larger unit with more headroom; higher values select a closer-sized unit.
Min 45% · Max 75% · Default 60%
Min 45% · Max 75% · Default 60%
Sets the default airflow method when starting a new Stage 3 calculation. Can be changed per project.
My Unit Library
0
Select the MVHR units you work with. Only these units appear in Stage 5 Unit Selection. Import custom units from a PHPP-format CSV.
Loading units…
Accepts the standard PHPP 10 component update .xlsx, or a custom .csv (columns: Manufacturer, Model, HR Eff %, SFP, Flow Min, Flow Max, PHI Cert ID, Ext Pressure). Matched by PHI cert ID — existing units are updated, new ones added.
Room Airflow Defaults
These values are used for all new Stage 3 airflow calculations. Changing them here does not retroactively update saved designs — recalculate the project to apply new rates.
Supply rates
| Room | m³/h | l/s |
|---|
Extract rates
| Room | m³/h | l/s |
|---|