Why is my AirCon Leaking?

Why is my Air Conditioner Leaking?

One problem nearly all conditioning users and owners encounter at one time or another is a leaking air conditioner. Leaks are annoying, inconvenient and can be dangerous. The cause of 9 out of 10 leaking air conditioners is due to a physical blockage in the condensate line.

These blockages can be caused by;

1. A poorly maintained system that has not been cleaned regularly or correctly;
• Physical blockages of condensate lines can originate from bio films & slime, found in condensate pans, deceased pests, gecko eggs, internal packing material that has been chewed by rats, mice & cockroaches.
• Heavily contaminated coils can also contribute to tracking and leaking systems.

2. Low Refrigerant/Gas – Sometime when a system is low on refrigerant/gas it will cause ice to form on the coils. When ice is sensed by the system it can initiate the defrost cycle which can cause an excess of moisture and intermittent dripping.

3. Stress fracture in a condensate pans – as systems age and due to natural vibration, which is made worse by poorly maintained systems plastic and polycarbonate parts can deteriorate, resulting in hairline cracks forming that cause small annoying drips.

4. Environmental factors – Air Conditioners are matched in capacity (size) to you room size. Air conditioners are designed to operate in a sealed environment e.g. A room with all the doors and windows closed. Air conditioning evaporators (indoor unit) cool the room by removing all the moisture (conditioning of the air) and when all the moisture is removed the room is cooled to its thermostat setting e.g. 24 degrees.

When a window or door is left open whilst operating an air conditioner the indoor evaporator works continuously to also try and remove the moisture outside. This practice will result in high running cost, a room never getting to the correct temperature or comfort level and an access of moisture that can cause sweating and dripping on the indoor evaporator surface. Please keep all room doors and windows shut when operating your air conditioners for maximum benefits, minimal problems and big energy savings.

5.   Poor Installation – It is unfortunate but occasionally we come across leaking systems that have been installed incorrectly requiring condensate lines to be corrected at a substantial cost.

If you are experiencing a leaking air conditioner a Sanitair Premium Clean will fix this problem 9 times out of 10.
Whilst professional air conditioning cleaning is the best way to address a leaking air conditioner it is unfortunately not a guarantee against leaks for the reasons mentioned above.

If your air conditioner has started leaking, your air conditioner more than likely, requires a professional clean. For a clean with a 12 Month Guarantee call Sanitair today on 1800 130 168


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Wet Weather – How to Combat Mould

High levels of rainfall in most parts of the country will see a high level of mould in our homes, bathrooms, air conditioners and may even venture into parts of the home that wouldn’t normally get mould.

Did you know that with every basket of wet laundry up to 5 litres of water vapour is expelled into the room atmosphere and every person in the home creates up to 10 litres of water vapour into the indoor air per day.  For mould to grow it needs moisture (from the air) and a food source (chemicals, dusts, skin DNA, pet dander) and if the surface is wet for up to 48 hours and not dried out, mould will begin to grow.

At the first sign of moisture penetration you should remove the moisture,  this can be done by using a dehumidifier or using your air conditioning system as a dehumidifier. Please take care that you do not recirculate any mould from the air conditioner and make sure it has been professionally cleaned and sanitised before using the system.

If you are using your clothes dryer, try to use a condensing dryer that removes the moisture from the wet clothes or have the dryer vented to the outside air.   This should also be done when using the bathroom, the vent should be vented to the outside (not the roof cavity) and to ensure the vent is always used when showering add it to the light switch so that is turns on as soon as the bathroom is being used.

Source: Today Nine Network 9now.nine.com.au/today


Sanitair have over 70+ operators that are locally owned and operated and qualified mould testing technicians in Queensland, New South Wales and Western Australia. IICRC certifed Firm and a corporate member of IAQA.

Freecall 1800 130 168 and speak with your Sanitair HVAC Hygienist.

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