AC Problems: Air Conditioner Isn't Cooling

Why Isn't My Air Conditioner Cooling

When an air conditioner isn't cooling, it does not always mean there is a major mechanical failure. Many common AC problems can be traced to simple issues such as thermostat settings, airflow restrictions, or power interruptions. Before calling for service, homeowners in Indianapolis can check a few basic items to see whether the system can be restored quickly.

Incorrect Thermostat Settings and Thermostat Issues

Check the settings on your thermostat. Make sure the temperature control selector is set below the current room temperature, and the system switch is on the COOL or AUTO position. The fan switch should be set to ON for continuous airflow or AUTO if you want the blower to operate only while the air conditioner is operating.

Try to get the air conditioner to turn on by lowering the thermostat to its lowest temperature setting.

Problems with the Air Filters

Dirty air filters are another common cause of cooling problems. When filters become clogged with dust and debris, they restrict airflow and prevent your system from circulating cool air throughout the home.

Check your filter and replace it if it appears dirty. In addition, make sure that all supply registers are open and that furniture, curtains, or other objects are not blocking airflow.

Restricted airflow can also affect important system components like evaporator coils, which rely on proper air movement to absorb heat from your home.

Blocked Outdoor Condenser Unit

A blocked outdoor condenser unit can also prevent your system from cooling effectively. The outdoor condenser needs adequate airflow to release heat from your home.

Inspect the unit outside your home and remove leaves, grass clippings, or debris that may be blocking airflow around the equipment. Shrubs and landscaping should be trimmed back to allow several feet of clearance around the condenser.

When the outdoor condenser unit is obstructed, the system may run longer while producing little or no cooling.

Low Refrigerant and Refrigerant Levels

If basic checks do not resolve the issue, the problem may involve low refrigerant. Refrigerant is the substance that allows your air conditioner to absorb and remove heat from indoor air.

When refrigerant levels drop due to a leak or other issue, the system cannot effectively transfer heat. Signs of low refrigerant can include weak cooling, ice forming on evaporator coils, or the system running constantly without reaching the desired temperature.

Because refrigerant systems are sealed and require specialized tools, this is a situation where an AC professional needs to inspect the system and locate the source of the leak.

Schedule an AC Services Appointment

If your air conditioner isn't cooling properly, Chapman Heating, Air Conditioning & Plumbing is here to help. Our experienced technicians can diagnose the issue and recommend the right solution for your home, whether that means fast AC repair, routine AC maintenance, or a full AC installation if your system has reached the end of its lifespan.

Call Chapman today at (317) 207-9378 for quality AC installation services in Indianapolis, Fishers, Carmel, Lawrence, Greenwood, and beyond.
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