Our EnerPHit design services provide councils, housing associations, and social landlords with specialist design solutions to deliver high-performance, low-energy retrofits that meet the Passive House EnerPHit standard. We help social housing providers implement retrofit programmes under funding schemes such as the Social Housing Decarbonisation Fund (SHDF), Off-Gas Retrofit Programme (ORP), Energy Company Obligation (ECO), and other grant-backed initiatives.
EnerPHit design ensures that energy efficiency measures are optimised for thermal performance, airtightness, and occupant comfort, providing long-term fuel savings and carbon reductions.
What Is EnerPHit Design?
EnerPHit is the Passive House retrofit standard, tailored for existing buildings. It provides a performance-based approach to retrofitting homes to achieve very low energy consumption while improving comfort and air quality.
Our EnerPHit design service involves:
- Assessing building fabric, construction type, and current energy performance
- Designing high-performance insulation, airtightness, ventilation, and heating systems
- Ensuring interventions are cost-effective, practical, and compliant with funding programmes
- Producing detailed plans, specifications, and technical guidance for contractors
For non-traditional, PRC, and hard-to-treat properties, EnerPHit design ensures retrofit works deliver measurable energy efficiency gains without compromising the structure or integrity of the building.
Why EnerPHit Design Is Needed
Achieving low-energy, high-performance retrofits is increasingly important for social landlords aiming to:
- Reduce residents’ energy bills and fuel poverty
- Meet net zero and carbon reduction targets
- Improve EPC/SAP ratings across housing stock
- Comply with PAS 2035 and funding programme requirements
- Ensure retrofit works are safe, durable, and long-lasting
EnerPHit design provides a robust framework to deliver retrofit programmes that are technically sound, efficient, and cost-effective.
What Our Service Provides
Our EnerPHit design services include:
Building Assessment and Analysis
- Detailed surveys of property fabric, dimensions, and construction
- Thermal performance analysis and identification of energy loss areas
- Air-tightness and ventilation requirements assessment
Retrofit Design Development
- Specification of high-performance insulation, heating, ventilation, and renewable energy systems
- Energy modelling to ensure compliance with EnerPHit targets
- Integration with PAS 2035, SHDF, ORP, ECO, and other retrofit requirements
Documentation and Guidance
- Technical drawings, plans, and specifications for contractors
- Recommendations for installation sequences and quality control
- Guidance to achieve audit-ready compliance for funding programmes
Supporting Retrofit Programmes
Our EnerPHit design services support:
- SHDF, ORP, and ECO grant-funded retrofit programmes
- PAS 2035-compliant energy efficiency interventions
- External wall insulation, loft insulation, heating upgrades, and ventilation improvements
- Non-traditional, PRC, and hard-to-treat housing retrofits
- Long-term decarbonisation, fuel savings, and resident comfort improvements
By designing to the EnerPHit standard, landlords can future-proof their housing stock while maximising energy and carbon reduction outcomes.
Deliverables
Clients receive:
- Detailed EnerPHit retrofit design packages
- Technical drawings, specifications, and installation guidance
- Energy modelling and airtightness calculations
- Recommendations for contractor delivery and quality assurance
- Documentation suitable for boards, funders, regulators, and PAS 2035 compliance
All outputs are presented in plain English, making complex retrofit design accessible and actionable.
Why Work With MDA?
MDA has extensive experience delivering EnerPHit and Passive House retrofit design services for social housing, including non-traditional, PRC, and hard-to-treat properties. Our expertise ensures:
- Designs that achieve low-energy, high-performance, and compliant retrofits
- Integration with PAS 2035, SHDF, ORP, ECO, and funding programme requirements
- Measurable improvements in EPC/SAP ratings, fuel savings, and carbon reductions
- Confidence for landlords, funders, and residents that retrofit works are safe, effective, and durable
With MDA, social landlords gain a trusted partner to deliver high-performance, low-energy retrofit programmes that meet both regulatory and sustainability targets.