Passivhaus (Passive House)

Earthwise offer Passivhaus design, consultancy and advice at all project stages.

We are happy to work on feasibility studies, planning applications and full design for new build homes.

Contact us today to discuss your project.


What is the Passivhaus standard?

Passivhaus or Passive House is an energy standard for low energy, high comfort buildings.  The standard focuses on well insulated, draft free buildings where fresh air is supplied by a ventilation system. The AECB Silver Standard is a similar, but slightly relaxed energy standard. EnerPHit is a similar standard for retrofitting existing homes.

What are the benefits?

There are many benefits of building to the standard:

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  • Healthy home with no drafts or mould
  • Comfortable living
  • Warm in winter with no drafts
    Cool in summer with no overheating
  • Good indoor air quality
  • A home that is cheap to run
  • Low CO2 emissions
  • Not worrying about future rises in the cost of energy
  • Quality assurance that the building is well made
  • No design gap, so what is designed is built

Feasibility studies:

Earthwise offers feasibility studies for new buildings (fixed price for residential projects upto 300 sqm) to check whether you can reach Passivhaus.  Send us your drawings and we can see if you can reach the  standard.  We can also offer advice to help you improve the design.

Our feasibility service includes:

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  • Energy modelling using the Passivhaus Planning Package (PHPP)
  • Expert review and recommendations for early stage designs to improve energy performance
  • Advice on form, massing, shape and orientation
  • Thermal element analysis, u-value & heat-loss calculations
  • Thermal bridge analysis & modelling
  • Glazing performance and overheating risk
  • Air tightness detailing to reduce leaks and drafts

To find out more or book a feasibility study please contact us


We also offer an ‘Introduction to Passive House’ CPD (Continuing Professional Development) for architects, engineers and other people working in the construction industry.  CPD describes an ongoing commitment to improving skills, knowledge and competence.

Our Introduction to Passive House CPD lecture covers:

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  • Introduction
  • What is Passive House?
  • Comfort, energy & quality
  • Passive House features
  • Key differences to ‘passive solar design’
  • History & evolution in Europe
  • Design approach & methodologies
  • Continuous highly insulated envelope
  • High performance glazing
  • Thermal bridge free construction
  • Air tightness – strategy & detailing
  • Importance of ventilation & good indoor air quality
  • Options for heating low energy houses
  • Quality assurance: how the certification process work
  • Passivhaus Planning Package (PHPP) modelling
  • Comparison to UK building regulations & BREEAM
  • Myth busting!
  • UK case studies

To find out more, book a CPD seminar or feasibility study please contact us


Want to talk about your Passivhaus project?

Call us today to discuss how we can help you.  Book a free consultation

Want to know more about Passivhaus?

Tailored CPD workshops on the standard and low energy design principles.  Book a CPD lecture

Want to check if your project can reach Passivhaus?

We offer feasibility studies to help people reach the standard.  Book a feasibility study


  • Passivhaus Designer logo
  • AECB logo
  • Passivhaus Trust logo
  • International Passivhaus Association logo
  • The Green Register logo
  • Elmhurst Energy logo