It is not uncommon when homeowner’s turn on the air conditioning for the first time on an over warm spring day, only to find the AC is blowing warm air instead of the expected cool air. The lack of cooling is a common reason people schedule an air conditioning repair not only in the spring, but throughout the summer. There can be a number of reasons why the AC is blowing warm air.
However, before calling Cypress Heating and Air Conditioning HVAC technicians for air conditioning repair, check the following:
Dirty Air Filter
Routinely changing the air filter ensures the performance, including the best possible energy efficiency and lifespan of the HVAC system. A overly dirty air filter can restrict the airflow through the system, causing it to work harder and potentially overheating. The result is unnecessary wear and tear, on the system, and also results in a dirty coil affecting the performance. A dirty filter is a potential cause of the AC blowing warm air, so check it and change if necessary. In fact, you should check the filter at least every 4 weeks, and more often if excessively dusty conditions are occurring.
The air conditioning system depends on the home’s electrical system for power. Typically, the HVAC system has its own dedicated circuit. A circuit breaker in the electrical service panel controls the power source for the system, and when a problem occurs, the breaker shuts down the flow of electricity in a process called “tripped” in laymen’s terms.
A tripped breaker may indicate a problem with the HVAC system, the electrical wiring or potentially, a failing breaker. Contact your Cypress Heating and Air Conditioning HVAC technician when you have a circuit breaker that continues to trip.
Some HVAC systems have their own circuit breakers that may trip when a filter is clogged, causing the system to be overworked. Power surges may also cause tripping breakers in the electrical panel or those connected to the system.
Have you ever shut off the heat/cool function on your heating and air conditioning system, and turned to fan from automatic to run mode to bring fresh air into your home? If you have, then you probably have forgotten it from time to time.
The problem occurs when you forget to return it to the normal settings and the fan runs continuously. As the compressor is unable to run with it shut off, it appears the AC is blowing warm air. Before you call your HVAC technician for air conditioning service, check the thermostat for the proper settings when the AC is blowing warm air.
Refrigerant leaks are often the cause of the AC blowing warm air. Ice, or a frosted appearance on the refrigerant lines is a likely indication the unit is low on coolant due to a refrigerant leak.
Repairing a refrigerant leak requires a certified HVAC technician to provide the repair of the leak, and the recharging of the system with refrigerant. Adding refrigerant is not a job you can provide yourself. The leak requires skilled repair, and a DIY recharge can lead to problems related to overcharging or undercharging the unit of refrigerant.
A Bad Compressor
The compressor pumps the refrigerant throughout the system. Without it, the AC will not provide cold air, or in the case of a heat pump, there also will not be any heat provided. When it fails, you will have to make the decision to replace it or an entirely new air conditioning installation. Replacement is typically the wisest option on heating and air conditioning systems 10 years old or older.
Faulty switches, damaged wiring, faulty capacitors and other electrical components are often the cause of the AC blowing warm air. The HVAC system contains numerous components, each dependent upon the other, and when one fails the entire system can fail. Wear and tear due to age and/or a lack of routine maintenance are a common cause of problems.
Routine changes of the air filter will delay dirty coils for years. They are a potential cause of the AC blowing warm air. Not changing the air filter as required allows soiling of the coils and over time the coating prevents its proper operation. Professionally provided annual or biannual maintenance ensures all aspects of the system receives a comprehensive inspection. The HVAC technician will identify when it is time for the coil to be cleaned, and provide a thorough cleaning when necessary. A clean coil helps to ensure peak performance, energy efficiency, increased reliability, and helps to reduce wear and tear, resulting in a longer lifespan. A dirty coil is also a frequent cause of water running onto the floor, resulting in damage to floors, walls and other.
Clogged Evaporator Drain
In a split system, the indoor portion of the unit contains the fan blower, and the system’s evaporator coil. As the coil sweats, the condensation drops into the evaporator pan. A drain in the pain carries the accumulating condensation outside of the home. Unfortunately, the drain can clog over time resulting in the evaporator pan overflowing. Furthermore, when the drain overflows it can result in damage to the flooring and the homes structure, as well as mold and mildew.
Cypress Heating and Air Conditioning provides professional residential and commercial heating and air conditioning services. When emergencies occur, we are available 24/7 for your convenience. If your AC is blowing warm air, contact our NATE certified technicians for reliable air conditioning repair. Your satisfaction is guaranteed. We serve Katy, Plano and the surrounding areas, and are a member of the BBB with an A+ rating.