Over a 12 month period air conditioning systems can lose up to 50% of their efficiency. Bacteria and spores may also build up in the ducting system and in extreme cases this bacteria can cause Legionnaires Disease, more routinely it causes ‘fusty’ smells in your car. The Air Conditioning Service and Cleansing works by cleaning the system, removing bacteria build-up. This is Extremely efficient and leaves a pleasant odour.