AC Repair | Flower Mound, TX

AC Repair | Flower Mound, TX

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The late spring and summer will see AC repair technicians in high demand. As temperatures rise, homeowners in Flower Mound, TX will rely more and more on their air conditioning system. When cool air has stopped flowing from the air conditioner, an AC repair will be needed. Unless you are a trained technician, we don’t recommend opening your air conditioner and trying to fix it. But there are some steps you can take to determine the seriousness of the problem and how involved the AC repair might be.

How Does an AC Unit Work?

Before we do that let us briefly describe how an air conditioner works. The warm air from your Flower Mound, TV home is extracted by a fan and then blown over an evaporator coil. The coil contains a liquid coolant that absorbs the heat from the warm air and the now cooler air is blown back into your home.

The heat changes the liquid coolant into a gas. A compressor now pumps the gas coolant through the condenser and cooling fins. The condenser squeezes the gas so that it reaches a higher pressure and temperature.

The heat from the gas is now transferred to the outside air via the cooling fins (the compressor, condenser, and cooling fins are located outside your home). The gas now reverts to its liquid state and continues its cycle around the air conditioner. Any excess moisture contained in the humid air is deposited in the drip pan and flows outside via an AC drain line.

Frozen Evaporator Coils Will Require an AC Repair

When you see frost and ice form on them you have a serious problem. If you ignore this then the coil will eventually freeze. The cause of frost and ice forming can include:

  • Dirty air filter – before the warm air from your room is blown over the evaporator coil it must pass through an air filter. A dirty air filter will restrict the airflow over the coil and cause frost and ice to form. The air filter needs to be cleaned or replaced regularly.


  • Low coolant levels – the lower the level of coolant in your air conditioner the less heat will be transferred from the warm air, increasing the chance of frost and ice forming.


  • The evaporator coil is dirty – a layer of dirt will act as an insulating layer and reduce the rate at which the warm air from your home transfers its heat to the coil and coolant. This dirt needs to be cleaned away.


  • Faulty Fan – a problem with the fan will mean the airflow is also reduced over the coil.

Some of these jobs can be done by yourself but are part of a service from One Hour Air Conditioning & Heating of Dallas. If the evaporator coil freezes then you will need to turn the air conditioner off to allow the coil to thaw. If the coils freeze too often you increase the chance of needing an AC repair.

Coolant Leaks

  • Less coolant will mean less cooling effect. The following are signs of a coolant leak


  • Larger energy bills – without the right amount of coolant the rest of the components in your air conditioner will need to work harder to maintain the temperature.


  • The harder they work the more energy they will use and increase your bill. Any component that overworks, is likely to get hotter leading to it burning out and need an AC repair.


  • Less cool air is coming from the unit – without enough coolant, the air conditioner will not cool the warm air as much.


  • Increased humidity in your home – now for the science lesson, warm air contains more moisture than cold air. The warmer the air blown back into your room the more humid it will be.


  • You hear hissing sounds – an air conditioner that is working properly will not make hissing noises. If you hear these sounds, you probably have a coolant leak and need an AC repair.


  • A technician from One Hour Air Conditioning & Heating of Dallas will need to top up the coolant levels and perform an AC repair to fix the leak.

AC Drain Line Problems

If the drain line or drip pan are blocked for any reason the air conditioner may shut down. The signs of a blockage are:

  • The smell of mold in your home – water in the drip pan and drain line can encourage the growth of mold or algae.


  • Their growth could explain the smell of mold in your home. So, they need to be cleaned regularly, this has the added benefit of reducing any mold spores from entering your home and degrading your air quality.


  • Puddles of water forming around your unit – a blocked drain line will stop the water in the drip pan from leaving your home.


  • The drip pan will fill and start to overflow, creating puddles of water in your air conditioner and on your floor.


  • Increased humidity in your home – any excess water will increase the humidity levels in your home. It may also be causing damage to the electrical components in your air conditioner.


  • Most people are not aware that they have an AC drain line. But if it is blocked it could cause your air conditioner to shut down.


  • If your unit does shut down it may be worth checking outside to see if the AC drain is blocked by dirt or leaves. It may save you having to call for an AC repair.

Keeping Flower Mound, TX Cool and Safe

Many of the problems highlighted above will be dealt with during a regular service from any of One Hour Air Conditioning & Heating of Dallas’s many skilled technicians. Having your air conditioner break down during a heatwave is going to be a very stressful experience especially if you are looking after young children or elderly relatives.

One Hour Air Conditioning & Heating of Dallas understands this and will always have technicians available around the clock. They will turn up on time and will not leave until everyone is cool and safe again. Whatever your air conditioner concerns please call us today.