The product is great. It has cleared my condensation and and shrunk the doors so they fit in their frames again. Unfortunately the air that it draws in is not the fresh clean air I was promised. It also fills my house with the smell of smoking products from outside. As a non-smoker I find this offensive but there is no option to turn the ventilation system off. The surveyor, sales team and installer all very friendly and enthusiastic people. But I was let down by the installer walking dog muck through my house and upstairs as he didn't put on his PPE. The vents were not what I was expecting and haven't been fitted particularly well. I've had to chase up the warranty and and receipt despite paying when requested. All in all I feel like I've had mediocre service for the price I paid.