Do you have a nuaire, vent axia, Envirovent or any working PIV wall unit. We can help! Regardless of make, model or age of unit one of our service engineers can come to you and carry out a full clean and service of the unit and in most cases we can replace the filters as well. We then test it, check the settings and output and leave you with a clean and fresh unit. SERVICES AREA COVERS THE FOLLOWING POSTCODES; RM, IG, CM, SS ONLY. PLEASE CALL IF YOU ARE OUTSIDE THE POSTCODES COVERED BY THIS SERVICE.