Why is My AC Running but Not Cooling?
Living in the Los Angeles area, you know how crucial it is to your comfort to have a functioning central air conditioner. Unfortunately, one of the customers’ most common issues is an air conditioner that suddenly stops blowing cold air. What should you do in this situation? There are many potential culprits and reasons why your AC is blowing warm air rather than cool air. The professionals at Universal Heating & Cooling are just the team you need to diagnose the problem and find a solution you can afford. Cool Air Not Coming Out? Low Refrigerant or Refrigerant Leak Your home’s air conditioner works on a cooling cycle, and refrigerant is critical. The refrigerant is stored in a series of copper refrigerant tubing and works by drawing heat energy from inside the home and safely releasing it outside. The refrigerant levels must remain constant for the system to work correctly. Unfortunately, if there is damage to the refrigerant lines, the cooling system cannot release warm indoor air outside and replace it with cool air. If there is a refrigerant leak, the issue should always be handled by a professional air conditioning technician. An HVAC technician can pinpoint the cause of refrigerant leaks, such as damage to the copper lines, and refill the unit with coolant. Obstructed Air Flow Can Mess Up the Air Conditioning System For your air conditioner to blow cold air, there must be a constant flow of air around and through the system. The unit’s job is to eliminate hot air from inside your home and replace it with cool air. If there is any obstruction, this cycle cannot occur, and your air conditioner will blow warm air or stop working altogether. One of the most common causes of obstructed or improper airflow is a clogged or dirty air filter. The air filters on your HVAC system play a critical role. They remove airborne particles from outdoor air before circulating inside your home. Your air filter is supposed to get very dirty, but it needs to be periodically tossed out or cleaned. If your HVAC system’s air filter becomes clogged or very dirty, it will obstruct airflow in the inside unit and cause various problems, including an ac system that is blowing hot air. The Expansion Valve Is Clogged An often overlooked component of your air conditioning system, the expansion valve is found in the evaporator coils and regulates the amount of liquid refrigerant that can enter the coil. If the valve becomes clogged or fails, the refrigerant cannot be released, and your ac unit will not blow cold air. It can be tricky to locate the expansion valve and even more challenging to determine if there is an issue. This is a common cause of cooling problems and one, as a homeowner, you will probably overlook. That is why you should always contact an HVAC technician if you are experiencing any significant issues with your central air conditioning system. Faulty Thermostat Imagine this scenario: You wake up on a hot Los Angeles morning, and no cold air is blowing out of the registers. You panic and assume the worst-case scenario has occurred, such as a faulty heat pump system or a bad condenser unit, and you see your wallet slowly emptying. Before you lose your cool, walk over to your thermostat and check the temperature. If there is an issue with your thermostat, such as a set of dead batteries, or a curious kid who loves to push buttons, your central air conditioning system cannot maintain the desired temperature. Often, you will find that simply adjusting the temperature setting on the thermostat is all you will need to do to fix the issue. Faulty Outdoor Unit = No Cold Air All central AC systems are comprised of two major sections: The indoor unit and the outdoor unit. The indoor unit houses a fan coil cabinet that contains your evaporator coil. If you have a furnace, this will often house the indoor components. Otherwise, you will have a fan coil, or the evaporator coil will be found in the indoor air handler unit. The outdoor unit is that giant metal box outside your home that contains the compressor, fan, and condenser coils. If there is damage to this outdoor condenser unit, which can occur after a storm or even through vandalism, the entire unit can blow warm air or even stop working altogether. Dirty or Damaged Evaporator Coil Once again, the evaporator coil is found inside your home and plays a critical role in the cooling cycle. The job of the evaporator coil, which is filled with evaporated refrigerant, is to draw warm air out of your house. The evaporator coil is connected to a compressor, and if the coil or the AC compressor malfunctions, heat energy exchange cannot occur. A faulty or frozen evaporator coil is another common issue that can be tricky to pinpoint. Once again, leave it to the professionals at Universal Heating & Air to diagnose the problem and make any necessary repairs. Faulty or Clogged Condenser Coil The evaporator coil and its counterpart, the condenser coil, work in tandem and are two critical components in all air conditioning systems. The condenser coil is attached to a condenser fan. The heated, pressurized refrigerant travels to the condenser coils, where it is released outside your home. Once again, if this outdoor coil suffers any type of damage and it cannot do its job properly, your AC will blow hot air. Damaged Air Ducts Will Slow Down the Cooling Process Your air conditioner often stops blowing cold air quickly, and the issues mentioned above are typically the problem. However, what if the airflow is diminished, and the air coming from the registers feels slightly warmer than it should? Believe it or not, the problem could be damaged air ducts. When the air ducts running through your basement and the rest of your home suffer damage, the hot air surroundings the ductwork mixes with the
