Passive House (Passivhaus)

Passivhaus is an international energy performance standard. The core focus of Passivhaus is to dramatically reduce the requirement for space heating and cooling, whilst also creating excellent indoor comfort levels.

This is primarily achieved by adopting a fabric first approach to the design by specifying high levels of insulation to the thermal envelope with exceptional levels of airtightness and the use of whole house mechanical ventilation.

Passivhaus standards can be applied to not only the residential sector, but also commercial, industrial and public buildings.

Our Experience

We are experienced in working closely with Passivhaus designers and consultants to ensure the necessary requirements are incorporated into the building services design.

Recent schemes include:

  • Vaughan Road – a passivhaus, modern apartment scheme
  • Clifton Hill – a £12m mixed housing development in Exeter
  • Bodmin Road – an award winning, £10.4m development, one of the largest passivhaus schemes in the UK
  • Newcastle Central Mosque – A new £8m mosque and community building, achieving predicted energy usage of 20%

The team, who include Passivhaus accredited professionals are knoweldgeable in the use of Passivehaus Planning Package (PHPP) to assist in the calculations of energy balances, designing comfortable ventilation, calculating heat load and summer comfort.Modelling a project using PHP can support clients with evaluating the costs of different approaches to meet Passivhaus and low energy performance levels, including:

  • What heating would be needed?
  • What is the overheating risk?
  • What changes are worth considering?
  • How does the existing design match Passivhaus requirements or the project’s objectives?

We also use our knowledge and experience to help the team develop thermal bridging strategies.