The NCHC18AT5S is a 1.5-ton evaporator coil engineered for reliable home comfort. Designed for R-454B refrigerant systems, it features a factory-installed refrigerant detection sensor and durable aluminum alloy tube and fin construction tested through 500 hours of salt spray exposure. Pre-formed flanges align with matching furnaces for faster installation, while longer service valve connections accommodate both mechanical and brazed methods. An antimicrobial drain pan helps reduce mold and mildew growth, and a ten-year limited warranty is available with product registration.