DfE Framework Support

Experts in building physics and Pure Natural Ventilation, Ventive can now support your bids for projects on the new Construction Framework (2025). Having analysed the requirements we have devised a strategy that helps you meet all the key requirements while minimising both CAPEX and operational costs of the building – creating a truly NZCiO compliant building. Our solutions support the requirements of BB101, BB93, TM52 and DfE Technical Manual compliance: Delivering fresh air, heat recovery and thermal comfort, without the noise, cost or complexity of mechanical systems.

Request more details on our CF25 support programme


System Overview

  • 100% fresh air, up to 72% passive heat recovery.
  • Operates in 3 modes: heat recovery, summer bypass, night purge.
  • No fans, no noise – silent and low maintenance.
  • Integrated sensors manage CO₂, temperature, humidity.
  • Fits within DfE 48m² layouts – roof-mounted design.
  • No ducting between rooms; no plant room needed.
  • Real-time cloud monitoring via Ventive Hub


Performance

  • Ventilation: 200–350 L/s per classroom, 100% fresh air
  • Cooling: Up to 10°C night purge during periods of high temperature
  • Air Quality: Maintains <1000 ppm CO₂ (BB101)
  • Acoustics: No fan noise – BB93 compliant, suitable for SEND
  • Energy: 2.2 kWh/year operational use; zero in-use Carbon
  • Installation: One roof penetration per classroom – ideally suited to service spine
  • Commissioning: Plug-and-play with 4G remote access

Dynamic CO2 control

CO2 control in a typical school

CO2 performance graph

Temperature regulation

Temperature control in typical school

Temperature performance graph


Compliance Summary

  • Ventilation & IAQ (3.4): Meets BB101 & Part F via passive, sensor-controlled fresh air supply
  • Thermal Comfort (3.2): Complies with TM52 using passive cooling and purge ventilation
  • Acoustics (BB93): No fans or ducting = silent, cross-room isolation achieved
  • Daylighting & Layouts: Roof integration preserves window area and ceiling heights
  • Net Zero Carbon: Zero in-use energy; low embodied Carbon materials
  • Design Integration: RIBA Stage 3 ready – BIM objects and layout examples available
  • BREEAM credits: Up to 6 (Hea02, Ene01, Ene04)
Windhive CF25 system installed on school roof
Ventive Windhives at Edward Peake School
Windhive installation

Framework Support

As part of our continued service to our existing and new clients, we offer support with integration of passive ventilation strategies into new school building design.


Request Further Details

To request more information about DfE Framework support, please contact us:

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