Passivhaus Modelling & PHPP Energy Modelling
At Focus 360 Energy, we provide a specialist Passivhaus modelling service using the industry‑leading Passive House Planning Package (PHPP). Whether you are designing a new low‑energy home or undertaking a retrofit, our modelling ensures your building meets stringent performance standards and delivers real‑world comfort and efficiency.
What is PHPP modelling?
The Passive House Planning Package (PHPP) is the Excel‑based design and energy‑balance tool developed by the Passive House Institute. It enables precise modelling of a building’s heat loss, cooling, ventilation, solar gains, primary energy demand and summer comfort. For example, the PHI describe it as calculating annual heating demand, maximum load, overheating frequency and primary energy for certified Passive House and EnerPHit buildings.
In short: a critical step for delivering genuine Passivhaus performance, not just theoretical.
Why use PHPP modelling for your building?
Accurate Predictions: It gives accurate predictions of building performance rather than relying on generic figures.
It supports design decisions early: orientation, form, fabric specification, and ventilation strategy are supported to keep your build efficient and cost‑effective.
Mandatory: If aiming for certification to the Passivhaus Standard or retrofit standard EnerPHit, it is mandatory.
Avoid performance gaps: It helps avoid performance gaps (prediction vs actual) by modelling key variables such as airtightness, thermal bridges and real occupant behaviour.
It supports sustainability credentials: lower carbon, lower energy bills, higher comfort.
Why Our PHPP Modelling Service Matters
We provide a tailored service for UK-based new build and retrofit projects to ensure your design is energy-efficient, cost-effective, and ready for certification. Our approach includes:
- Initial Brief & Data Gathering: We assess the geometry, orientation, site conditions, UK climate, and proposed fabric and services to create a foundation for accurate modelling.
- PHPP Modelling: Using the Passive House Planning Package (PHPP), we create a detailed energy model that evaluates heating demand, cooling risk, primary energy use, and annual loads.
- Design Optimisation: Based on our model, we offer advice on fabric specifications, ventilation, heat recovery, shading, and window selection to enhance performance and reduce costs.
- Reporting: We provide clear outputs that highlight key performance indicators, the cost-benefit of design changes, and support for certification applications.
- Certification Support: If you’re aiming for Passivhaus or EnerPHit certification, we work alongside certifiers to ensure the model meets all necessary standards.
Ongoing Support: As design changes occur, we update the model to reflect these revisions, helping you stay on track throughout the project.
How Our Accredited Assessors Support You
Our team of Accredited Assessors brings a wealth of expertise to your project, ensuring that every aspect of your Passivhaus modelling is accurate, compliant, and optimised. With deep knowledge of PHPP modelling and the latest Passivhaus standards, they offer tailored advice throughout the process, from initial concept through to final certification.
They work closely with your design team to identify potential challenges early, optimise performance, and ensure that your building meets all required sustainability goals. Their careful attention to detail and dedication to delivering high-quality results ensure that your project runs smoothly, stays on budget, and achieves the highest energy efficiency standards.
Related Services
Passivhaus modelling is frequently combined with the following additional services:
Passivhaus Design Consultancy
Find out moreU-Value Calculations
Find out morePsi Value Calculations
Find out moreCondensation Risk Assessment
Find out moreAir Tightness Testing
Find out moreVentilation Design
Find out moreOur Process
Ready to start your Passivhaus modelling?
Get in touch with our team today for a free consultation on your PHPP modelling requirements.
Click the Get a Quote link to access our online portal, or use the form to share brief details about your project and we will respond promptly.
Why choose Focus 360 Energy
Expert Oversight: Certified by experienced engineers.
Regulatory Guarantee: Fast approval with tailored UK Building Control reports.
Fast Turnaround: Clear reports delivered on time to meet project schedules.
Material Optimisation: Cost-effective, safe material specifications.
Integrated Design: Seamless coordination with structural design services.
Frequently Asked Questions
If you’re aiming for Passivhaus certification or very high performance, yes, it’s essential. For other low‑energy builds, it still adds great value by informing design decisions early.
Costs vary depending on project size, complexity and whether certification is required. Contact us for a tailored quote.
Ideally, during the concept or early design stage, the earlier, the more impact on design and cost. However, it can also be done later for retrofit risk assessment.
Yes. PHPP focuses on building performance, comfort, fabric first and uses climate‑specific data. It complements or goes beyond SAP in UK context.
