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Product Information

LIQUI MOLY A/C System Cleaner Spray - 250ml

LIQUI MOLY A/C System Cleaner is a specialist cleaning spray designed to remove bacteria, mould and unpleasant odours from vehicle air conditioning and ventilation systems.

Its effective formula cleans the air conditioning evaporator and air inlet ducts, leaving a protective film and a pleasantly fresh fragrance. It helps maintain a cleaner cabin environment without requiring complete removal of the air conditioning system.

What Does LIQUI MOLY A/C System Cleaner Do?

The cleaner removes mould and bacteria that accumulate on air conditioning evaporators and inside ventilation ducts. It helps eliminate musty smells at their source, leaving the system cleaner and the cabin air fresher.

Why Do Air Conditioning Systems Become Contaminated?

Moisture produced during air conditioning operation can collect around the evaporator, creating conditions where bacteria and mould develop.

Over time, this contamination can cause unpleasant smells when the air conditioning or ventilation system is switched on.

When Should It Be Used?

A/C System Cleaner is recommended when musty or unpleasant smells are noticeable from the ventilation system.

It can also be used during routine air conditioning servicing, particularly on vehicles frequently driven in humid conditions or used for short journeys.

Key Features

  • Removes bacteria and mould from air conditioning systems.
  • Eliminates unpleasant and musty ventilation smells.
  • Cleans evaporators and air inlet ducts.
  • Leaves a pleasantly fresh fragrance.
  • Forms a protective film after cleaning.
  • Helps maintain cleaner cabin air.
  • No complete air conditioning system removal required.
  • Suitable for petrol, diesel, hybrid and electric vehicles.
  • One 250ml can treats one vehicle's air conditioning system.

Application Instructions

  • Open a vehicle window and ensure the air conditioning condensate drains are clear.
  • Switch off the air conditioning, select recirculation and footwell airflow, then run the engine with temperature and blower settings at maximum for 10 minutes to dry the evaporator.
  • Insert the supplied spray probe towards the evaporator following vehicle-specific access instructions.
  • Spray the cleaner across the evaporator surface, moving the probe carefully to distribute the product.
  • Allow the cleaner to work for 15–20 minutes.
  • Dry the evaporator for a further 10 minutes using the same heating and ventilation settings.
  • Replace the cabin dust and pollen filter.

Important: Follow Porsche-specific service instructions where available. Keep a window open, avoid inhaling cleaning vapours and read the product's biocide safety information before use. The manufacturer recommends one 250ml container per vehicle.

Product Category Description – Porsche Air Conditioning & Cabin Ventilation Cleaners

LIQUI MOLY A/C System Cleaner provides an effective solution for cleaning Porsche air conditioning evaporators and ventilation systems, helping eliminate bacteria, mould and unpleasant cabin smells.

Suitable for compatible Porsche 911, 944, 968, 928, Boxster, Cayman, Cayenne, Macan, Panamera and Taycan models, this specialist treatment helps maintain fresh cabin air and cleaner ventilation components.

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