The MRCOOL MMCFOAM Foaming Coil Cleaner is a specialized cleaning solution designed to remove dirt, dust, grease, and buildup from HVAC coils. It works by producing an expanding foam that penetrates coil surfaces, loosens contaminants, and helps restore clean heat-transfer surfaces for improved airflow and system performance. Suitable for air conditioners, heat pumps, evaporator coils... https://www.partshnc.com/mrcool-foaming-coil-cleaner-mmcfoam