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The NU-CALGON NUCAL-4171-75 is a no-rinse evaporator coil cleaner in an 18-ounce aerosol can, formulated for use on indoor evaporator coils in residential and light commercial HVAC systems. Applied directly to the coil surface, it lifts dirt, dust, and biological buildup without requiring a water rinse — the foam self-drains through the condensate system. Improved coil cleanliness restores heat transfer efficiency, helps reduce elevated head pressure caused by fouled coils, and supports overall system capacity. HVAC technicians carry this product as a standard maintenance chemical for seasonal tune-ups and service calls. The formulation meets OSHA standards for occupational use.
This coil cleaner is intended for evaporator coil maintenance in split systems, package units, fan coils, and air handlers where access to a rinse water source is limited or impractical. It is well suited for indoor coil surfaces in tight mechanical spaces during scheduled preventive maintenance or diagnostic service visits. The aerosol delivery format allows targeted application across fin surfaces with minimal overspray.
Designed for use on evaporator coils in residential and light commercial HVAC systems including split systems, package units, fan coils, and air handlers where a no-rinse coil cleaning solution is appropriate.
A licensed HVAC technician should shut down the system and set the thermostat to the off position before applying coil cleaner to evaporator surfaces. Allow adequate dwell time for the foam to penetrate and loosen deposits before the condensate system carries the residue away. Follow all safety data sheet (SDS) guidance for ventilation and personal protective equipment when working in enclosed mechanical spaces. Dispose of the aerosol container in accordance with local regulations.
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