I have been researching for an under the sink RO system for a while and came across Sanatoga Water Conditioning. Neither my husband nor I are handy, so needed professional help with installation. I had not heard about the RO system Manufacturer before, because they sell their product through dealers like Sanatoga Water Conditioning, but a phone call to the Manufacturer helped me get answers to my questions. The installing technician was competent, helpful and professional and the customer service responsive. Satisfied customer and would recommend this company.