Commercial Air Conditioning, Ventilation & Commercial Heating Originally established in 1999, Accurate Mechanical Services have become one of the key players within the Air Conditioning, Ventilation and Commercial Heating sectors within London and South east / South west of England. We have extensive experience of the products and services we offer and we are confident that we will find the right solution for you. Our fully trained staff have years of experience enabling us to provide a high level of customer service within all areas of our business.