Envirovent QRHT Quro Low Noise Decentralised Mechanical Extract Unit with Adjustable Timer & Humidity Sensor
Product Overview
The Envirovent QRHT Quro is a SAP PCDB listed decentralised mechanical extract ventilation (dMEV) unit designed to deliver quiet, energy-efficient performance in domestic properties. Engineered for continuous extraction, it provides a flexible and market-leading solution for kitchens, bathrooms, utility rooms, en-suites and WCs.
With sound levels of below 9 dB(A) at 3 metres and a maximum airflow of 30 l/s (108m³/hr), the Quro offers powerful yet discreet ventilation. Its ultra-low Specific Fan Power (SFP) of down to 0.08 W/l/s ensures outstanding energy efficiency, making it ideal for SAP compliance and modern low-energy homes.
High Performance with Intelligent Control
Powered by a low wattage DC motor, the QRHT model combines reduced energy consumption with excellent airflow stability. Its aerodynamic design and constant volume technology help maintain selected airflow rates across varying pressures, eliminating the need for manual adjustments.
- Maximum airflow: 30 l/s (108m³/hr)
- Ultra-low SFP down to 0.08 W/l/s (SAP PCDB listed)
- Whisper-quiet operation below 9 dB(A) at 3m
- Constant volume control with limiter to prevent nuisance running
- Low energy DC motor for improved efficiency
- 3 year manufacturer warranty
Automatic Intelligent Features
The QRHT variant includes an automatic intelligent timer that adjusts the over-run period depending on how long the fan has been operating in boost mode. This ensures effective moisture extraction without unnecessary energy use.
An integrated intelligent humidity sensor continuously monitors relative humidity levels and automatically adjusts fan speed when required. This helps to prevent condensation, damp and mould growth while maintaining indoor air quality.
User-Friendly Digital Controls
A convenient side-mounted digital display provides full control and monitoring functionality. Installers and users can easily adjust fan speed, timer settings and humidity parameters (model dependent), while also viewing runtime data and diagnostic error codes.
Flexible Commissioning Options
The Quro QRHT offers five selectable trickle speeds of 5, 8, 11, 13 and 16 l/s (factory set at 8 l/s), allowing precise commissioning to suit property requirements. Boost speeds are selectable between 20 and 30 l/s, with a factory setting of 25 l/s.
Typically installed in a central hallway or landing, the unit gently ventilates the entire property, transforming stale air into a fresh, healthy and condensation-free environment.
Low Maintenance Design
Designed for hassle-free upkeep, the Quro does not require filters. The front cover can be easily removed for simple cleaning using a dry cloth, helping to reduce long-term maintenance costs.
