Overview: The flexibility of Passive House retrofits with PHI’s EnerPHit program is pushed to the limit.
Presentation 1: Decarbonizing Public School Districts Through a Phased EnerPHit Approach: A Case Study in London
Description: Deep retrofit strategies can be delivered across public school districts using a phased approach aligned with real-world funding constraints. A case study, featuring three schools, for a school district in London shows how the Passive House Planning Package (PHPP) can be used not just as a modelling tool, but as a decision-making framework to guide phased work toward EnerPHit-level performance, and enabling deeper decarbonization. It shows how engagement—with schools, estates teams, and students—ensured that technical outcomes translate into meaningful, lasting impact.
Learning Objectives:
- Describe how a phased retrofit approach can be used to achieve deep decarbonisation (EnerPHit-level outcomes) within constrained public funding cycles.
- Apply PHPP as a strategic decision-making tool to test retrofit scenarios, evaluate sequencing, and improve confidence in predicted energy and carbon outcomes.
- Assess the relationship between modelled and actual building performance, and understand how to use monitored data to validate and refine retrofit strategies.
- Identify key factors for successful delivery of estate-wide retrofit programmes, including stakeholder engagement, governance structures, and integration with funding mechanisms such as PSDS.
Presentation 2: Rural Workforce Housing on a Shoestring
Description: This project is an opportunity to explore and understand the potential cost-effective envelope interventions that advance toward Passive House EnerPHit performance for the adaptive reuse of metal buildings as affordable workforce housing, and in so doing, leveraging the substantial upfront carbon investment the metal building represents.
Learning Objectives:
- Describe the importance of a comprehensive understanding of relevant site conditions, existing building, and applicable building code and zoning regulations.
- Explore a step-by-step approach in potential modifications to the wall and roof assemblies, while respecting continuity of air control, thermal, and water drainage planes.
- Analyze energy modeling in EasyPH as a design tool to help develop requisite understanding of projected heating and cooling demands and loads, leading to resultant estimated equipment requirements.
- Apply a system for ballpark estimating construction costs, as well as a system for estimating operational energy costs to develop a cost/benefit analysis that compares Option Tiers to one another.
CEUs:
Upon completion of all modules a Certificate of Attendance will be automatically issued for AIA & PHI credit. Please self report to both AIA & PHI using the codes provided.

