Had issues with excess moisture in ourproperty. Envirovent provided a free survey and immediately identified the solution to the problem. With regard to the installation, the engineers were very professional and friendly (maybe because I kept them plied with tea and coffee all day). They left our property and clean and good state. The products that were installed (ATMOS & Cylone) made an immediate positive impact. The air in the property is now fresher, mould is no longer an issue......not wanting to sound like a poster boy but it's been a dream ever since it has been installed. More than happy to recommend Envirovent and their products.