Greenwood AirvacCV2GIP Unity Any Room Extractor dMEV Fan

Quite significantly cheaper than the competitors (although it went up by £10 three days after I bought it, but still cheaper by far). Whisper quiet on the lowest setting which is exactly what I wanted but with the option for a massive boost if required.Personally I installed this with ONLY a permanent live (with a fused spur for isolation), not a switch live from the light switch. What this means is that it runs permanently but using the settings I reduced this to the minimum speed for a constant trickle ventilation as it's only for a small downstairs toilet. I then activated the humidity sensor so that if for any reason it raises then it will boost up temporarily until it drops (so far it hasn't needed to). If required though it can run constantly as mine does but with the option to boost when a light switch is turned on and then with another option to run on for a while longer after it goes off. It's a solution to almost any extractor needs you'd require.Comissioning is done by simply twisting the outer cover off and using the easy to press buttons. Takes less than a minute to set up.Would recommend to anyone and would buy another for elsewhere in the house if required.

Excellent extractor fan. Bit pricy but you get what you pay for. This has made a massive difference to my very humid bathrooms and utility room due to the humidity sitting on this model. These are surprisingly energy efficient too. Great products.

Competitive price on offer, trickle feature good for continuous air extraction when bathroom light is switched off, clears any shower steam quickly. Slightly noisy when in standby mode - noticeable humming

Night and day quality difference over the rubbish you’d find in consumer-focused DIY chains. Configurable trickle and boost airflow, and can be set in timed or humidistat modes. Can also be set up to boost when the room light comes on. Surprisingly quiet for the airflow it delivers, and the looks are pleasingly different from the normal square louvred box style that seems common.

These fans are a different class from the old manrose ones that were installed when I moved into the flat. They are simple to install (or at least replacement of existing fan), look good and already I have noticed a decrease in dampness in my shower room.They run all the time on 'trickle speed' if you use the humidistat function. Then when you switch on the light (depending on how you have it wired) it goes to 'booster speed'. To avoid nuisance noise at night, the 'booster speed' only runs on timer if you have been in the room long enough. i.e. if you are in the room for < 5 mins then the booster speed switches off when you switch off the light. If you have the booster switched on for 5-10 mins then the fan stays on booster mode for 5 minutes after switching off.The booster speed and trickle speed can be adjusted to suit in the easy commissioning phaseNote about the delivery - ordered Friday at 3 pm and was posted that evening for a Monday delivery. Excellent service.