Kool-It Evaporator and Heater Core Foam Cleaner (6 oz)

Musty air blowing through the vents usually means mold, mildew, or bacteria have colonized the evaporator or heater core inside the dash. Lubegard Kool-It (96030) tackles that problem with a foaming cleaner that reaches inside the HVAC housing to flush out contaminants and the odors they cause.

The super foaming action is the key. Rather than a liquid that runs straight through, the foam expands to coat the evaporator and heater core surfaces, lifting mold, mildew, and bacteria off the fins and carrying them out through the drain. No drilling or disassembly of the dash is required, which saves significant labor compared to pulling the evaporator for cleaning. The treatment also helps restore airflow by clearing buildup from the fins, which can improve both heating and cooling efficiency.

Lubegard says one treatment provides up to 6 months of odor elimination. The product works on any vehicle including electric and hybrid models. At 6 ounces, one can is typically enough for a single treatment on a standard vehicle HVAC system.