If your air conditioner is running but your home is not getting cool, the problem may be something simple or it may require professional HVAC service. Before scheduling repair, there are a few basic things you can safely check.
Check the Thermostat Settings
Make sure the thermostat is set to Cool and that the temperature setting is lower than the current room temperature.
If the thermostat uses batteries, replace them if the display is weak or not responding properly.
Check the Air Filter
A dirty air filter can restrict airflow and make it harder for your air conditioning system to cool the home.
Check the filter and replace it if it appears heavily covered with dust or debris.
Make Sure the Vents Are Open
Walk through your home and check that supply and return vents are open and not blocked by furniture, rugs, curtains or other objects.
Blocked vents can reduce airflow and contribute to rooms that feel warmer than others.
Check the Outdoor Unit
The outdoor air conditioning unit needs space around it to release heat properly. Leaves, grass, dirt and other debris can collect around the equipment.
Make sure the area around the unit is clear and that nothing is blocking airflow. Avoid opening the equipment or attempting electrical repairs yourself.
Look for Ice on the System
Ice on refrigerant lines or other parts of the air conditioning system can indicate an airflow or cooling problem.
If you notice ice buildup, turn the cooling system off and allow the equipment to thaw. Continuing to run a frozen system may make the problem worse.
Check for Weak Airflow
If the air coming from your vents feels cool but the airflow is very weak, the problem may involve the filter, blower, ductwork or another part of the system.
Weak airflow throughout the home is a good reason to have the HVAC system inspected.
The System May Have a Mechanical or Refrigerant Problem
If the thermostat, filter and airflow all appear normal but the home is still not cooling, the problem may involve a fan, electrical component, compressor, refrigerant system or another internal part.
These problems typically require testing and diagnosis by an HVAC technician.
When Should You Call for AC Repair?
Consider scheduling professional service if the system is blowing warm air, cannot maintain the temperature setting, has weak airflow, repeatedly turns on and off, develops ice buildup or makes unusual noises.
A technician can inspect the system, identify the cause of the cooling problem and explain the available repair options.
Need Air Conditioning Repair?
Beltway Appliance Repair provides residential air conditioning repair throughout Northern Virginia, Washington, DC and nearby Maryland communities.