My Airsep Focus portable air unit (properly called a portable converter) developed a problem and I was unable to use it. In this high heat and humidity, my health was at risk so getting it fixed was the most important thing to me. I turned to the company I bought it from, US Oxygen in Boca Raton, FL. For the next 10 days, I called them at least a dozen times. No one ever answered the phone, and it seems my many voice mails were just unread or ignored. They never gave me the courtesy of a response. I was growing more frantic every day and was in great discomfort! I then contacted a local company and was told that I needed to get a requisition for a work order from the people I bought my Focus from. They did, however, offer me the name of the manufacturers, but that seemed to be of little help in this instance. There seemed to be nowhere to turn - and my health was growing worse with each hot, steamy day. In quiet despair, I reviewed my past emails (thank God I save all of mine!) and came across one I had forgotten all about. It was to a person at Caire, Inc., in Georgia, who had helped me to get a new cable for my air machine three years previously. (At that time, the salesman I bought it from did help me, but as I said, no one contacted me after my repeated emails this time.) Taking a chance, I called her office and a wonderful woman by the name of Cathy Mills not only answered my call, but little less than two weeks later, I had my Focus air machine fixed and returned to me in great working order! Backstory: It turned out that Caire, Inc., is the maker of the AirSep Focus, whose factory is located in Buffalo, NY. i think that Caire, Inc., in GA is the middleman, who sells these units to companies. Ms. Mills was able to bypass the rule that the seller must request a work order, and she saw to it that within 10 days after first talking to her, I had my Focus repaired and back in my possession. Let me assure everyone that IF you decide to purchase something as vital and as expensive as a portable air machine, be very careful about buying online, or out of your immediate area! It is appalling that the company I bought mine from ignored my pleas for help - and they are located more than 1000 miles from me. I learned my lesson the really hard way!! Thank God for people such as Cathy Mills, whose efficient and expedient help saved me from a really bad health crisis and well as my $2000 air machine! Luckily, it was still under warranty so it didn't cost me a cent. As far as I am concerned, Caire, Inc. deserves a medal for the way they handled a customer. And, Cathy Mills deserves all of the kudos allowable and my undying thanks. If you are in the market for an AirSep Focus, you would do well to call Caire, Inc., in Georgia, and ask for Cathy Mills. read more