7 Common Causes of AC Breakdown

Posted November 29, 2022 by in Lifestyle
apartment ac unit

Air conditioner breakdown in the intolerable Texas heat is more than enough to ruin your day. On top of that, dealing with the summer heat with a broken air conditioner is a lot of trouble. And repairing an AC breakdown costs a good amount of money. 

But these breakdowns are avoidable. And to help you avoid dealing with a broken system, we have brought together the most common causes of AC breakdown and their solutions. But in case you need help with AC repair, Fort Worth comes to the rescue with some of the best companies. Keep reading to know about these reasons. 

7 Most Common Air Conditioner Breakdown Causes

From negligence in maintenance to malfunctioning thermostats, there are quite a few causes behind air condition breakdowns. So, take a look at some of these common causes with us. 

  1. Blocked Or Dirty Air Filters

Air filters in the air conditioning unit ensure that the air entering our homes is clean and clear. However, these air filters capture dirt and dust over time and cause the systems to work harder than usual. And this overworking of the HVAC system often causes the system to break down.

Clean the air filters on a regular basis to keep them free of dirt, debris, and so on. Not only that but make sure to replace the filters when required. 

  1. Blown Fuse 

One of the most common causes behind air conditioner breakdown is a blown fuse. A fuse is an important appliance component as it completes the circuit. When the fuse blows, the circuit becomes incomplete, preventing the air conditioning unit from operating.

Replacing the blown fuse is the only viable option in cases like these. However, it is important to deal with the blown fuse as soon as possible. Otherwise, this issue can cause further damage to the air conditioner, which in turn will increase the costs of repair.

  1. Malfunctioning Thermostat 

The thermostat plays a major role in ensuring the cooling of the air conditioner. HVAC system cooling or heating is maintained by this thermostat. Therefore, making sure that the thermostat is not malfunctioning is a must. When the thermostat malfunctions, it prevents the HVAC system from cooling or heating the room properly, which eventually leads to a breakdown.

Adjusting the thermostat at the right temperature and mode is essential. Contact an HVAC repair company to inspect the thermostat and repair or replace the system if it fails to perform correctly.

  1. Refrigerant Leak 

Leakage from an appliance can never be a good sign. And refrigerant leakage from an air conditioning unit can be quite dangerous. When the air conditioner starts leaking, the level of refrigerant reduces significantly. This leakage not only causes damage to the system but also results in a complete AC breakdown. 

Make sure to get in touch with your AC repair company as soon as you notice a refrigerant leakage. The HVAC technicians will repair the leak and make sure that there is no internal damage to the air conditioner. 

  1. Heavy Use 

One of the common causes behind an air conditioner breakdown is heavy usage. However, many homeowners do not take the usage of air conditioners into consideration. The dependency on AC units is quite high during summer to tackle the unbearable heat. But this dependency often causes the system to overwork and break down due to overheating, circuit tripping, and so on. 

The solution to this issue is to find ways of reducing the pressure on the air conditioner. Improving the insulation of the house is a great way of decreasing the AC load. Relying on alternate ways to go through the hot summer days is also a good idea. 

  1. Lack of Maintenance 

Negligence in air conditioner maintenance and the biggest cause behind a broken down HVAC system. Over time, the air conditioner develops issues that take a major turn and result in AC breakdown. This lack of maintenance not only leaves you to suffer in the summer heat but also increases the cost of repairing the system. 

Regular servicing of the air conditioning system makes sure that the system is up and running without any problems. It also helps homeowners to prevent expensive repairs. And a properly maintained system will also help you to save energy by ensuring efficiency. 

  1. Clogged Drain 

The drain pipe connected to the HVAC system often gets clogged due to the accumulation of dirt, debris, dust, and many more. When the drain pipe becomes clogged, the water cannot move out and begins accumulating inside the system. This trapped water causes significant damage to the internal components of the air conditioner and starts leaking. 

Keeping the drain pipe of the HVAC system clean and clear is important. While many homeowners prefer to clean the pipes themselves, contacting an AC repair contractor is the best way of avoiding hassle. Make sure to clean the drain pipe efficiently once every few months. 


Air conditioners are a necessity in every home to beat the scorching Texas heat. While enjoying the cool breeze from the air conditioning unit is fun and relaxing, dealing with an AC breakdown is equally troubling. After working with Green Leaf Air for several years, we are familiar with the causes that drive your air conditioner to a breakdown. 

Now that you know the common causes of AC breakdown and their solutions, you can easily prevent your HVAC system from malfunctioning. Contact a professional for regular maintenance and check-up of the air conditioner to avoid issues. If you need an AC repair, Fort Worth has some of the best companies and trained technicians in the industry.