Shoreham Beach ‘PHI LEB’ | Compliance

From the outset, the house was modelled in the Passivhaus Planning Package (PHPP) which suggested compliance with the Passivhaus (heating Demand) criteria of 15 KWh/m2/year, and with a dedicated and experienced team, meeting the 0.6 ACH airtightness target was a reasonable assumption, hence the provisional name Shoreham Beach ‘Passivhaus’.  However, certification is not being sought and the PHPP model has not been maintained as the project has evolved, and so compliance with the criteria cannot be assumed, and so the Passivhaus label cannot be used.  That said, the PHPP model does demonstrate that the house will meet the (approximately half as demanding) Passivhaus Institute Low Energy Building Standard (PHI LEB) criteria of 30 KWh/m2/year so the house could reasonably be called the Shoreham Beach ‘Passivhaus Institute Low Energy Building’ and if the completed project achieves better than 1 ACH airtightness, the quotation marks could be removed.