Greenwood Airvac CV2.1HT Unity dMEV Extractor Fan

• Ultra-low running costs
• Smart humidity response
• Quiet continuous ventilation
• Installer-friendly commissioning

The Greenwood Airvac CV2.1HT Unity is a continuously running decentralised Mechanical Extract Ventilation (dMEV) fan with intelligent humidity control and adaptive timer functionality. Designed for low-energy, compliant ventilation in wet rooms, it delivers quiet, efficient performance in both new build and refurbishment projects. At a Glance Ventilation type: Continuous running dMEV (decentralised MEV) Smart control: Automatic humidity sensing with adaptive timer Energy use: As low as 0.5 W continuous power Noise level: From 7.9 dB(A) at low speed Commissioning: Front-facing airflow adjustment with lock-out Applications: Bathroom, WC, ensuite, utility and kitchen Why Choose the CV2.1HT Ultra-low running costs: Specific Fan Power as low as 0.10 W/l/s, supporting SAP compliance and reduced carbon emissions. Smart humidity response: Automatically boosts airflow only when genuine humidity spikes are detected, helping prevent condensation and mould without unnecessary energy use. Quiet continuous ventilation: Very low sound levels at trickle speeds for improved occupant comfort. Installer-friendly commissioning: 100% variable airflow adjustment via front-mounted touch controls, with tamper protection once set. Installation Flexibility Mounting options: Wall, ceiling or window installation Spigot size: Ø100 mm (compatible with rigid ducting) Shallow void friendly: Short 68 mm spigot depth Semi-rigid ducting option: Compatible with CT110 mm semi-rigid ductwork (model variants) Technical Specifications Supply voltage: 230 V / 50 Hz single phase Maximum power consumption: 6 W Specific Fan Power (SFP): 0.10 W/l/s Sound level: From 7.9 dB(A) at low speed Ingress protection: IPX5 (wall) / IPX4 (ceiling) Weight: 0.53 kg Dimensions: 197 × 197 × 126 mm Compliance: UKCA / CE marked, PCDB listed Maintenance and Servicing The Unity CV2.1HT is designed for straightforward maintenance. When used with the optional Quick Release Kit, the fan can be safely removed by a competent person, simplifying cleaning and servicing while retaining wiring integrity. Frequently Asked Questions Is this fan suitable for bathrooms and WCs? Yes. The CV2.1HT is specifically designed for continuous ventilation in wet rooms including bathrooms, ensuites, WCs, utility rooms and kitchens. Does it automatically respond to humidity? Yes. The HT model includes SMART humidity sensing that reacts to real humidity spikes rather than fixed thresholds, helping avoid unnecessary running. Is it suitable for new build and refurbishment? Yes. The compact design, shallow spigot depth and flexible mounting options make it suitable for both new installations and retrofit projects. Can airflow settings be altered after commissioning? Airflow can be adjusted via the front touch panel during setup and then locked to prevent tampering. Settings are retained even after power loss.