
We have recently certified two new-build projects to the ‘AECB Carbonlite Standard’. The AECB standards provide a more accessible way of achieving a low energy certification than full Passivhaus; whilst the AECB standards are based on the Passivhaus methodology and require projects to be modelled in PHPP, the energy and air tightness targets are more relaxed, allowing more compatibility with current UK construction practices. More information.
Paul Cayford is an approved AECB certifier.
New-build school
St. Gabriel’s Primary Phase 2B teaching block, Rugby.
The project is complete.
- Energy Consultant: Etude
- Architects: vHH
- AECB Certifier: Cayford

New-build home in Suffolk
Cayford was appointed as Energy Consultant/ PHPP Modeller/ & AECB Certifier. See Projects
The client wished to reduce the amount of water systems and moving parts in the new building, so the design team adopted an air delivery system for heat and cooling. This is an air-to air heat-pump system, which is combined with MVHR mechanical ventilation heat recovery. (HPV Heat Pump Ventilation).
The project is recently certified: AECB Low Energy Database
- Architects: Project Orange
- Heating & Cooling: Total Home Environment
- Energy Consultant & AECB Certifier: Cayford

