MRCOOL MCMP3036BOTB 2.5–3 Ton Multi-Positional Pre-Charged Evaporator Coil is an indoor HVAC component designed to deliver efficient cooling and heating performance. It works by allowing refrigerant to absorb heat from indoor air as it passes through the coil, supporting effective temperature regulation and humidity control. https://www.partshnc.com/mrcool-2-5-3-ton-multi-positional-cased-coil-mcmp3036botb