Certified AC is professional. Certified AC is honest. Certified knows the meaning of 'service' . I want to think of a flowery review--but the best review I can give is that I have been working with and using their services for over 5 years (maybe more ). I not only use Certified for my own home, but for my 3 rental properties, as well. Helpful and always willing to work with me --Certified is a business you can feel safe working with.