More Common Problems with Air Conditioners

More Common Problems with Air Conditioners

by | Jun 10, 2016 | Air Conditioning, Blog, Indoor Air Quality | 1 comment

We went through the three most common air conditioner problems in one of our past posts and knew that it was time to add a few more common problems that can occur with your AC system. To avoid the onset of any major AC problems it is important to get your air conditioning system serviced and thoroughly inspected at the start of every season. Performing routine maintenance, like cleaning or replacing the air filter, will help keep your air conditioner in good working order.

If you are experiencing any of the problems listed below it is important to call us here at KAC Express. We will send one of our HVAC experts to your property to diagnose and repair your air conditioner here in Houston, TX.

Inadequate Cooling

If your air conditioner just isn’t cooling your home no matter how low you set the temperature there could be a few problems that your AC unit is experiencing. For example, your evaporator may be dirty or perhaps your air conditioner is an improper size for the size of your home. However, sometimes a refrigerant leak is the problem, in this case, it is important to have a trained technician perform a thorough leak detection inspection, fix the leak, test the repair, and charge the system with the appropriate amount of refrigerant. If there was no leak detected, your evaporator is clean, and your AC system is the correct size you may have a condenser problem. If your condenser is damaged it may restrict the flow of refrigerant which in turn reduces the amount of cool air that can be produced.

Vent Air Smells

Is the air coming out from your vents producing a foul odor? If so, your condensate drain trap may be dried out, this will allow sewer gases to pass through the line. How does this happen? Well, it could be due to a long season of no AC use or the gravity-fed drain line wasn’t installed with the proper incline. Don’t live with the smell of sewer gases polluting your air conditioned air, call the experts here at KAC Express to get your air conditioner back in tip top shape.

Repeatedly Turns On and Off

If your air conditioner system seems to be sporadically turning off and on your wires and terminals may be destroyed, the condenser unit and evaporator may be dirty, or it could be a sensor problem. If the thermostat sensor behind the control panel is knocked out of place it will cause your air conditioner to behave erratically.

Air Conditioner Unit Floods the Yard

It is common for the air condensation drain to runoff with water that has been extracted from the air. The best solution for combating unwanted floods around your unit is to either reroute the air conditioner drain water or improve the soil around the area. Some ways to reroute the AC drain water is by adding an above ground extension pipe, underground drain pipe, French drain, catch basin, dry well, or collection bucket.

Air Conditioner Not Blowing Cold Air

This is the most common AC problem that nearly everyone faces. This usually happens when the air filters are dirty and are blocked by dirt and debris. Ac that has dirty air filter will never blow cold air and dirty air filter can further freeze up the condenser unit and limit the cooling power of your AC. If you face this problem with your AC then you need to replace the air filters of your air conditioning unit. It is best to change the air filter every month so that your AC can blow cold air.

AC Refrigerant Leak

It is common for AC refrigerant to leak if AC unit is not properly maintained. When the coolant in your AC starts leaking you will notice temperature variation, high energy bill and the unit will not perform accurately. Refrigerant leaks can result in:

  • Low efficiency
  • High power consumption
  • Coil freezing
  • Damaged compressor
  • Uneven cooling

Always ask the professional for the AC service after every 2 months. Never ignore the coolant ratio in your AC unit as both high and low refrigerant can damage the unit.

Air Conditioner Making Noises

You will hear different sounds from your AC depending on the type of problem it has. Below we have discussed several reasons why your air conditioner is producing a variety of sounds:

  • Banging

You will hear a banging sound if there is a loose or broken part – a connecting rod, piston pin or crankshaft. If the indoor blower is unbalanced then also you will hear this noise. Sometimes if there is a need to change the compressor then also your AC will make this noise.

  • Clicking

If you hear a clicking sounds when you start-up and shutdown your AC then it might be due to a relay problem. It could also be a sign of a defective control or a failing thermostat.

  • Hissing Sound

You will notice this sound when there is a refrigerant leak in your AC unit.

  • Rattling or thumping

If there is problem with a blower or motor assembly then you will hear this sound.

  • Buzzing sound

Any faulty electrical components in your AC will provide a buzzing sound.

Frozen Evaporator Coil

This is most common problem that nearly every AC owner faces. This usually happens when your air conditioner does not receive sufficient air needed for operation. When the evaporator coil get freezes it can make AC freeze up and stop working. This happens when the vents and ducts are blocked or when the Ac fan is faulty. Also if the air filters are not clean then also the evaporator coils can get frozen. Vents, ducts, ac fan and filters are very important part of the AC unit as it maximizes airflow and indoor air quality.

Drainage Problem

If you face this problem with your AC then it might be because AC drain pipeline is clogged with dust, algae, and dirt. When water does not drain properly then it can give access to mold, fungus, and mildew to develop.




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