Frequently Asked Questions



1. Why is the air-con leaking water?

A normal air conditioner will have water condensate in the indoor fan-coil and discharge through a draining pipe to the nearest drain. Air Conditioner will start to leak water when the drainage piping is clogged/choked.


2. Why is the room not cold enough even after the air-con been running for few hours?

There are a number of causes to this air conditioner not cold situation

Reason 1: The indoor fan-coil is dirty resulting in weak dissipation of cool air.

Reason 2: The outdoor condenser is dirty resulting in incapable of producing cooling refrigerant.

Reason 3: There may not be enough refrigerant in the air conditioning system.

Reason 4: There might be some problem with the air conditioning system resulting in non-continuous operation of the system.

Reason 5: The desired operating temperature is set too high.

Reason 6: The air conditioner installed is under-sized.


3. What is an inverter air-conditioner?

An inverter air-conditioner is one which is able to respond to the temperature of the environment and change its speed of the compressors accordingly. Thus saving on electricity costs.


4.  What is the advantage of regular air-con service?

Regular service of your air conditioning equipment will provide the following benefits:

Benefit 1: The air conditioner will cool better.

Benefit 2: The electrical consumption of the air conditioning equipment will be lower.

Benefit 3: Air-con leaking will be minimized.

Benefit 4: There will be less need for air-con repair.

Benefit 5: The air con equipment lifespan will be prolonged.


5. How often should I have the air con service?

In general, it is recommended that residential air conditioner is checked every 3 months and every month for the commercial air conditioner. The duration varies with different usage pattern and other environmental factors. Please seek the assessment of a qualified technician.


6. Can I do my own air con maintenance?

The basic maintenance that is recommended is the cleaning of the air filter and outer panel of the air conditioner every 2 weeks. This will helps to improve the air conditioning in the room.


7. Why is the air con noisy?

Noise is normally generated from

a. Vibration noise resulted from dirty indoor fan-coil/ outdoor condenser.

b. Noisy draft resulted from dirty indoor fan-coil.

c. Loose mounting of the component in the air conditioning system.

d. Faulty parts in the air conditioning system.


8. Why is the air con smelly?

The smell comes from bacteria formed by microbes in the warm dark humid environment in the indoor fan-coil unit. Sometimes when the smell is very bad you may need a more intensive chemical treatment to rectify this problem.


9.  Why does the air con need chemical cleaning/chemical washing?

Chemical overhaul/cleaning is a very thorough way of cleaning the air conditioner. When an air conditioner is badly clogged/ choked and a general service can’t improve the condition, an overhaul is necessary. In an overhaul, the air conditioner is dismantled part by part and chemically wash.


10. Why must the fan-coil unit be dismantled for chemical cleaning/chemical washing instead of inserting a water tray to wash away the chemical?

By dismantling the fan coil unit, the air conditioning individual components can be washed thoroughly. This will help better clean the unit and also not leaving behind the chemical residue that may leas to the corrosion of the fan coil.


11. What should be done if there is a refrigerant leakage problem?

If your air conditioning system has a refrigerant leak problem, simply adding of refrigerant (R22 / R410) is not a solution. A trained technician should perform a test to trace and repair the leak. Upon completion of leakage repair, a correct amount of refrigerant should be top up.


12. Do we need to service the Condenser (outdoors)? If, yes, how often?

You need to service the condenser (outdoor air conditioning unit) at least once a year to make sure the air circulation of the unit is not blocked. It can affect the cooling efficiency, a shorter compressor life and higher electrical consumption. Sometimes, it is subjected to an environmental condition, which requires a qualified technician to give recommendations.



About Coolinger
Coolinger is one of the most trusted Aircon Servicing, Repair, Installation & Maintenance companies in Singapore, we have been providing reliable and effective air conditioning services in this region using the latest equipment and technologies since 1997. Our team of experienced and skilled personnel is committed to providing you with great cooling solutions effectively and hassle-free way.