Greenwood | Low Energy Bathroom Fan, Heat Recovery System, Whole House Ventilation

Unity CV2GIP

Continuously running bathroom or kitchen fan
Widely specified dMEV continuously running extract fan suitable for all wet rooms. Can be installed in wall and ceiling applications. Low running noise. Complies with System 3 in the Building Regulations.

Greenwood SMART Technology

is designed into this product: click to see how SMART...

Features & Benefits
Models & Control Options
Download Documents
Features and Benefits

Unity CV2GIP is a dMEV (decentralised mechanical extract ventilation) continuously running extract fan that complies with System 3 in the Building Regulations. Revolving around a one product concept, it is one single unit which can be applied to all wet rooms including kitchen, bathroom, utility and WCs. With an ultra-low energy DC motor and mixed flow impellor, Unity CV2GIP assists in the delivery of Guaranteed Installed Performance onsite, now a fundamental part of Building Regulation compliance.

  • Performance Not Power - Unity CV2GIP delivers the correct airflow performance with the lowest possible energy requirement for Building Regulation compliance
  • A Greenwood GIP product - 100% adjustable on-site for easy compliance
  • It complies with System 3 (dMEV), removing the need for high background ventilation rates (window vents)
  • EST Best Practice compliance with a Specific Fan Power as low as 0.16 W/l/s
  • Includes Greenwood SMART Technology for even better ventilation in the home
  • Now available in a CV2GIP SELV extra low voltage option for bathrooms: CV2SVGIP
  • Ultra quiet running noise as low as 10dB on trickle speed

What else should you know about Unity CV2GIP?

  • Performance, performance, performance!
    The original dMEV solution, Unity CV2GIP has been designed to ensure Guaranteed Installed Performance is achieved for Building Regulation compliance and sign off. With 100% adjustability, Unity can be set at the point of installation, tested and signed off to the airflow rates set out in ADF:2010 without over or under ventilating, or adjusting itself once installed, which itself can cause nuisance noise. For dMEV the mixed flow impellor is ideal and good practice for retaining low energy consumption as continuous ventilation rates are low, e.g. 5 l/s up to 13 l/s, meaning that ducting resistance will cause minimal impact on performance.


  • Greenwood CommissionSMART
    To enable a simple on-site process and ensure GIP is easy to achieve, CV2GIP has been designed with the first ever SMART Pad which is located at the front of the unit. Once on-site, the installer simply sets up the unit by selecting the room type, trickle or boost speeds and then turning controls, such as humidity and timer, on. No more dip switches located at the back of the unit - a simpler, SMARTer and better way of assisting the delivery of Guaranteed Installed Performance and keeping installers happy.


  • Greenwood GIP product - 100% adjustability
    Unity CV2GIP is a Greenwood GIP product - designed to assist in the delivery of Guaranteed Installed Performance easily. Using the innovative SMART pad, located at the front of the unit, installers simply select the room, e.g. kitchen or bathroom, and then, using the + and - buttons, can simply increase the speed of the fan in 1 l/s increments. With on-site testing now happening for regulation compliance, and walls and ceilings all having an impact on performance, the need for adjustability is crucial.


  • Greenwood TimerSMART
    A SMARTer way of ensuring ventilation is delivered effectively to a home - using duration of occupancy to determine the length of time the fan overruns in boost mode rather than a pre-set generic time of, say, 15 minutes. In the bathroom for 10 minutes - overrun on boost speed for 10 minutes. A simple and logical approach to reducing nuisance noise, nuisance running and unnecessary heat loss, keeping energy performance as low as possible.


  • Greenwood HumidiSMART
    A patented technology, Greenwood HumidiSMART uses the actual installed environment to boost ventilation in conjunction with humidity sensing, reacting only when a man-made spike in humidity levels is created and, therefore, ensuring optimal ventilation provision to the home. With traditional humidity sensing there is an activation point which, once reached, boosts the fan. This type of sensing however does not distinguish between ambient and man-made humidity and, therefore, may activate when it is a particularly hot humid summer evening. This can cause unnecessary nuisance running, especially in the middle of the night!


  • Discreet and very quiet running
    With a circular design and finish, Unity CV2GIP has been designed to blend effortlessly with its background and will look fabulous with any bathroom or kitchen décor style. To support this, Unity CV2GIP has also been designed with very low running noise - as low as 10dB(A) on trickle speed.

Models & Control Options

Now also available:
CV2SVGIP SELV Extra Low Voltage Option



These are the typical ancillaries required for the installation of Unity CV2GIP in an apartment or house - to view ancillaries in more detail, please click here

Quick Quote

Take a few moments to try out our quote form

Copy Specs

Click here to copy this product's specification


Click here to register for our latest promotions


Facebook Twitter Pinterest Google Plus Linked In

Zehnder Group