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Troubleshooting 8 Common Air Conditioning Problems

troubleshooting common air conditioning problems infographic

Air conditioners malfunction from time to time and it can be due to a variety of different reasons. Sometimes these problems can be easily fixed at home but most times you will need to call in a professional to come inspect and repair your unit. In this blog we are troubleshooting 8 common air conditioning problems to help you get answers! There could be many reasons behind any one of these problems that would require different solutions, so it is always best to contact a professional that specialises in air conditioning repairs.

1. Unit Making Loud Noise

Unusual grinding or whirring noises coming from your air conditioner is a sign that you may need to call HVAC expert to repair your system. It is usually caused by mechanical issues with the fan motor, compressor or airflow. This is NOT something you should look to fix yourself. Hire a professional to repair your air conditioning system.

2. Water Leaking From AC

It is normal to see condensation around your air conditioner, but water is a sign that your system is leaking. The most common cause is that dirt and dust mixed with moisture from the AC clogs the condensate drain line. If you think that your unit is leaking water, you should call a HVAC repair expert.

3. AC Not Turning On

There are several common reasons why your air conditioner is not turning on. It could be due to a malfunctioning thermostat, clogged air filters, a tripped circuit breaker or loose wiring. Do not attempt to perform repairs yourself, our team of expert engineers have the right equipment to diagnose any electrical issues.

4. AC Blowing Hot Air

It can be frustrating when your AC is blowing hot air instead of cold. This could be a sign that your air filters are blocked. Air filters are easy to replace. We recommend that you do this once to two times a year. Low refrigerant levels can be another culprit for your blowing hot air. Low refrigerant levels are also an indicator of a leak so it is definitely worth fixing as soon as possible.

5. Refrigerant Leaking

The refrigerant is a gas that is responsible for absorbing heat from the indoor air. If you have low levels of refrigerant, your AC will continually blow warm air. If you suspect a leak, it is important that you contact a HVAC professional to repair it immediately. Leaks are most commonly caused by holes or cracks in the coils that circulate the refrigerant.

6. AC Running Constantly

If your AC is constantly running, the most common cause is dirty or blocked filters. These can easily be cleaned or replaced as needed. There are also things like airflow restrictions and malfunctioning thermostats that could be culprit. It is worth noting that if you have an AC that is too small for the space, it will be working very hard to keep up with reaching your desired temperature and would therefore be constantly running.

7. Smells Coming From AC Unit

If you have a bad smell coming from your air conditioner, it could be down to a few different reasons. If your AC smells like fire or burning, it could be that one or multiple of your electrical components are faulty. We advise that you immediately turn your unit off and contact a professional to have a look. If you are getting a mouldy or musty smell, it is likely that excess water in your drip lines are causing mould and mildew to grow. Again, it is best to contact a professional and not try to fix the problem yourself.

8. Circuit Breaker Keeps Tripping

If you notice that your AC is tripping a fuse it on it could be down to a few things. Dirty air filters, condenser coils or loose wiring could be the source of your problem. This could also be caused by poor installation, depending on who you used to install your system. An AC professional will be able to find the cause and make the necessary repairs.

Talk to the experts

At ACS Installations, we are London’s leading air conditioning solutions experts. With over 35 years’ experience, our team of friendly engineers are ready to help with any of your air conditioning needs. Get in touch today for a free quote.


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