In applicable schemes (please see above), PHPP will be considered as a compliant modelling approach for the prediction of operational energy (and carbon). This applies only to homes and small non-domestic buildings, where the building services are limited to:
- Heating
- Domestic hot water
- Natural or local mechanical ventilation
- Lighting and small power
- Solar photovoltaic or solar thermal systems
This methodology cannot be used where the building services include central air handling, mechanical cooling, or air conditioning.