Greenwood Zehnder Unity CV2.1HT Decentralised Mechanical Extract Ventilation Fan

The Greenwood Zehnder Unity CV2.1HT is a smart, continuously running Decentralised Mechanical Extract Ventilation (dMEV) fan designed to deliver outstanding indoor air quality while reducing energy use and noise levels.

Part of Zehnder’s innovative Unity range, this fan embodies the “one product, any room” concept, making it suitable for bathrooms, kitchens, utilities, and WCs in both new builds and refurbishments.

Engineered for low-energy performance, the Unity CV2.1HT uses as little as 0.54 watts, helping reduce running costs and meet modern carbon reduction standards. Its ultra-quiet operation just 7.9dB(A) on low speed ensures discreet, continuous ventilation without disturbance.

Equipped with intelligent SMART technology, including automatic humidity sensing and overrun logic, this dMEV fan adjusts airflow to suit real-time environmental needs, preventing unnecessary heat loss while maintaining optimal comfort.

The front-facing button panel allows easy commissioning and setup with tamper-proof controls, while the compact 68mm spigot design makes it ideal for tight spaces, ceiling voids, and wall or window installations.

Please Note : This replaces the Greenwood Airvac Unity Continuously Running Low Energy Extractor Fan | CV2GIP

Features

• One Fan, Any Room: Suitable for kitchens, bathrooms, utilities, and WCs.
• SMART Humidity Control: Automatically detects and manages moisture levels for efficient, responsive ventilation.
• Ultra-Efficient Operation: Uses as little as 0.54W, delivering exceptionally low running costs.
• Whisper-Quiet Performance: Operates at just 7.9dB(A) on low speed — almost silent.
• Easy Commissioning: Front-facing variable airflow adjustment (+/- buttons) with tamper-proof lock-out.
• Compact Design: 68mm spigot depth ideal for shallow ceiling voids or limited-space installations.
• Flexible Mounting Options: Wall, ceiling, or window installation with optional accessories such as fire collars, adaptors, and fixing kits.
• Low Maintenance: Quick-release design for easy cleaning without disturbing electrical connections.
• High Protection Rating: IPX5 (wall) and IPX4 (ceiling) for safe installation in wet areas.
• Compliant and Certified: CE and UKCA marked, meets Building Regulation standards for ventilation and energy efficiency.
• 3-Year Warranty: Backed by Zehnder for reliability and long-term performance.

Specifications

• Brand: Greenwood Zehnder
• Model / Product Code: Unity CV2.1HT
• Type: Decentralised Mechanical Extract Ventilation (dMEV)
• Installation: Wall, ceiling, or window mount
• Power Consumption: As low as 0.54W
• Sound Level: 7.9dB(A) on low speed
• Spigot Size: 68mm
• IP Rating: IPX5 (wall), IPX4 (ceiling)
• Compatible Ductwork: ComfoTube 110mm semi-rigid ducting
• Control Type: SMART humidity sensing and automatic overrun control
• Warranty: 3 Years
• Certifications: CE, UKCA, Building Regulations compliant

Ideal For

• Bathrooms, kitchens, and utility rooms
• Social housing and residential developments
• Retrofit projects and energy-efficient upgrade
• Meeting Part F ventilation and Awaab’s Law compliance requirements