SDS delivers expert Passivhaus design and consultancy for all project types—new builds, retrofits, residential and large scale. Our specialist team combines building physics and MEP expertise to deliver high-performance, low-energy solutions that meet the most rigorous standards.

We can act as the Passivhaus lead, supporting architectural and MEP designs with optimized strategies, or collaborate closely with other Passivhaus designers to develop innovative MEP systems that fully comply with Passivhaus requirements.

Passivhaus MEP Design

Our specialist MEP engineers develop innovative solutions tailored to Passivhaus design requirements.

We work closely with architects and consultants to design systems that minimize operational energy and reduce embodied carbon. From ventilation strategies to heating and cooling solutions, we create integrated designs that deliver long-term efficiency and resilience.

Building Physics

Our building physics expertise underpins every Passivhaus project we deliver. By combining advanced modelling techniques with practical design strategies, we ensure exceptional energy performance and comfort.

Our services include:

Energy Modelling: Using the Passivhaus Planning Package (PHPP) as the foundation for accurate and reliable design decisions.
Fabric & Airtightness Consultancy: Optimizing the building envelope to achieve superior thermal performance and airtightness.
Advanced Thermal Modelling: Dynamic simulations for complex projects, including daylight analysis, thermal comfort, HVAC performance, and CFD.
Operational & Embodied Carbon Reduction: Integrating Passivhaus principles to support net-zero operational carbon goals and designing MEP systems with minimal embodied carbon.

AECB CarbonLite

Our specialist consultancy team offers full design and energy modelling services aligned with the AECB CarbonLite standards, helping you achieve high-performance, low-energy buildings with confidence.

As approved AECB Building Standard certifiers, we can also guide your project through the certification process—ensuring compliance, quality, and long-term sustainability.

“SDS have taken into consideration the key design requirements needed for Passivhaus and Building Biology and ensure they have incorporated this into their designs. I would have no hesitation in recommending SDS on any Passivhaus housing projects.”

Richard Hayman, Operations Director – Exeter City Living

Certification & Compliance Support

Navigating Passivhaus certification can be complex—we make it simple. Our consultants guide you through every stage, from initial feasibility studies to final compliance checks. We provide detailed energy modelling, MEP design, commissioning review and sign off, thermal bridge analysis, air tightness consultancy, and quality assurance to ensure your project achieves full certification with confidence.