Our evaporator coil started leaking. Vu diagnosed the problem promptly, created a temporary system to collect the leakage in a bucket, and created quotes for 3 options to fix it. For several reasons, we decided on the least expensive solutions. Vu came yesterday as scheduled and made the repairs and cleaned up in a very expeditious and professional manner. When completed, he showed me his work and how he improved the piping input, casing for the coil, and modifications of the interior of the unit to help prevent mold. He also told me that the new coil not only worked with the old refrigerant as quoted, but could be flushed and used with used with the newer refrigerants when and if needed. It is always evident that he takes pride in his work, knows what he is doing, and understands customer service while also promoting his company. I will always request Vu to perform my service.