Goodman 3 Ton 13 SEER AC with Uncased Upflow/Downflow Coil 20" wide GSX130361CAUF3030C6 Suitable for use with R-410A and R-22 refrigerants Rust-resistant, thermoplastic drain pans feature a low water-retention design Check flowrater expansion device for heat pump or cooling-only applications Rifled aluminum tubing and louvered aluminum fin coils AHRI Certified; ETL Listed