Air vent cleaning
Air vent cleaning is the dedicated process of removing dust, mould, and bacterial buildup from a car's HVAC vents and ducting.
What it means
Air vents are the visible end of a long HVAC system that includes the blower motor, the evaporator, the heater core, and metres of ducting hidden behind the dashboard. Over years, dust settles in the visible vent louvres and bacteria grows on the evaporator coils where condensation collects. The result is the slightly musty smell that puffs out the vents the first few seconds of cold-AC operation, and over time, allergic-style reactions in some passengers. Cleaning the vents involves three layers. Surface dust on the louvres is removed with detail brushes and compressed air. The vent interiors are cleaned with foam or aerosol HVAC cleaners that are sprayed in through the cabin filter housing or directly into the vents, dwell on the evaporator surface, and rinse out through the condensate drain. Severely contaminated systems sometimes need partial dashboard removal for full evaporator access, which is a more involved job. Cabin filter replacement is paired with vent cleaning since the filter is the vent system's first defence.
Why it matters in Singapore
Singapore's humidity makes evaporator-side mould a persistent problem. Most cars develop a noticeable AC-onset smell by year four or five if the cabin filter and HVAC system are not maintained. Annual vent cleaning paired with cabin filter replacement keeps the system clean and the cabin air actually cabin-air-quality.
How Revol Carz handles this
Revol Carz cleans visible vent louvres and treats the evaporator with HVAC foam cleaner during interior detailing visits, paired with cabin filter replacement.