Is Your Air Conditioning System Blowing Out Warm Air? - Reasons And Remedies

Air conditioning systems are a lifesaver during hot summer days and nights. With global temperatures escalating, people have started relying heavily on air conditioning systems to keep their environment comfortable. However, it is important to make sure that air conditioning systems are well-maintained and serviced regularly to keep them working effectively. 

Based on the frequency of usage and how well it is maintained, there can be a variety of issues that may arise with your air conditioning systems. Air Conditioning experts in Katoomba can help identify the root cause of the problem. One of these issues is that the system is blowing out warm air. A blast of hot air from your system, when you expect it to blow out a nice cold refreshing draft, can come as a shock. 

Some problems that can be the reason for the warm air blowing out of your system include:

Low refrigerant

Refrigerant is the liquid that absorbs the heat in your home. Worn valves, loose joints and poor assembly of air conditioning systems cause the refrigerant to leak, making the system ineffective in cooling your space. Hissing or bubbling sounds indicate a refrigerant leak from your air conditioning system and that you should get the issue fixed to restore the efficiency of the system. 

The remedy:

You will need the help of trained Air Conditioning professionals in Katoomba to plug this leak. The technicians will first locate the leak or leaks through physical examination and the injection of a liquid dye in the air conditioning unit. The located leaks will then be sealed, and the refrigerant will be recharged. 

Thermostat problems

The thermostat is one of the first things that you need to check. Older units have a dial thermostat that might accidentally be set to heat. On the other hand, the thermostat could be faulty and in need of a replacement.

The remedy:

Set the thermostat five degrees lower than the normal setting in summer to see if the thermostat kicks in to give the desired cooling. 

Check the mains to see if the AC is ‘on’ and that it has been set to the cooling position. If the thermostat works on batteries, this would be a good time to replace those batteries. 

Cleaning the thermostat and the contacts of any debris will help in resolving the problem as well. Additionally, check to see if any wires have come loose. If they have, reattach them using a screwdriver to tighten any screws in the thermostat. 

Dirty Air filters

This is one of the most common causes of your air conditioning unit malfunctioning. Clogging in the air filters can obstruct the passage of warm and cool air in the ducts leading to various problems, including frozen evaporator coils, resulting in the warm air coming from your air conditioning system. Although a dirty air filter may not directly result in the warm air blowing from your AC, the dirty filter leads to a dirty evaporator coil, which in turn causes the unit to work at lower efficiency. 

The remedy:

Turn off your air conditioner. This is important because cleaning the air filter with the air conditioner on will make the dust and dirt collect in the internal parts. Moreover, be careful not to use the air conditioner without having put back the cleaned air filter first. 

Once the air conditioner is on, locate the filter and unclip it. Using a vacuum cleaner, suck out the dust and brush off any debris. You can wash the filter to clean it deeply. 

To wash you can mix vinegar, liquid soap and water in equal amounts and soak the filter in it for an hour or more. Make sure you dry the filter before placing it back. 

Frozen evaporator coils

While it may seem counterintuitive to suggest that frozen evaporator coils can cause warm air to blow, the fact is that frozen coils stop cool air from flowing, where the warm air from the motor then flows into the room, creating the issue. 

The remedy:

Turn off the air conditioning system and allow the frozen coils to thaw. This could take 24 hours. Once thawed, clean the coils with a soft brush and switch the unit back on again. 

Dirty condenser coils

Condenser coils are part of the outdoor unit of the system and are responsible for removing the heat from your house. These coils are exposed to wind, air, and water and can collect dirt and grime. The dirt on the coils obstructs their functioning and puts undue strain on the system where the AC stops cooling properly. 

The remedy:

Turn off the AC unit, and make sure that there is a minimum 2 foot clearance around the outdoor unit. Remover the heat pump cover and vacuum the fins using a soft brush attachment. Make sure that sharp objects are not used. Remove the grille and fan, then wipe with a cleaning solution using a sponge. Be careful with the fins because these are important yet highly fragile parts. Let dry before putting everything back in its proper place. Of course, if you think that this is too technical for you, you can have Air Conditioning experts in Katoomba take a look.  

These are some of the common problems that can be the reason why your Air Conditioning unit is blowing warm air. Make sure that you consult the expert air conditioning professionals in Katoomba to check if there might be other underlying reasons such as fan problems, blocked drains, or electrical issues. 

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