Advanpro sold me a new Lennox 13ACX aircon compressor in June 2018, but used my old aircon lines and evaporator coil because they wanted my business and told me it's the most cost-effective way with good pricing, and I trusted them. Big mistake. The new aircon uses 410A refrigerant whereas my old aircon lines and coil ran on R22 refrigerant. My aircon died last summer 2021 and a Lennox service person told me Advanpro made a bad install. I contacted them but they went into denial mode. Terrible.