The Sierra serviceman ( Frank) was prompt, courteous, and professional. Frank serviced and replaced a part in my Air Conditioner. He took the time to explain in layman's terms, and showed me the part in question that needed to be replaced, and why. I could clearly see that the part was damaged and in need of replacement sooner or later. Sierra Air/Con Inc. has earned my confidence over the years and I fully recommend their service.
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