Having issues with your home AC can be frustrating, but there are several things you can do before calling an expensive repairman. Here are some troubleshooting steps you can try to improve your AC's performance:
Clean or replace the air filter: A clogged or dirty air filter can restrict airflow, making it harder for your AC to cool efficiently. Check your air filter and clean or replace it if needed. This should be done every 1-3 months, depending on the filter type and how frequently you use your AC.
Check the thermostat settings: Make sure your thermostat is set to "cool" mode and the temperature is set to your desired level (below 74 degrees). If the thermostat is in the wrong mode or has incorrect settings, your AC won't function properly.
Inspect and clean the condenser unit: The outdoor condenser unit can become dirty or obstructed, which affects its efficiency. Turn off the power to the AC and clean the condenser fins using a hose or soft brush. Ensure there are no plants or objects blocking the airflow around the unit.
Seal air leaks: Check for any gaps or cracks around doors, windows, and ductwork. Seal these air leaks with weatherstripping or caulk to prevent warm air from entering your home and causing your AC to work harder.
Improve insulation: Proper insulation in your home helps maintain a consistent temperature. Check your attic, walls, and windows for adequate insulation. If necessary, consider adding insulation to areas that are lacking.
Use fans: Ceiling fans or portable fans can help circulate the cool air throughout your home and make it feel more comfortable. They can also help equalize the temperature difference between upstairs and downstairs.
Reduce heat sources: Identify and minimize heat sources within your home, such as keeping curtains closed during the day to block out sunlight and avoiding using heat-generating appliances (like ovens and stoves) during the hottest parts of the day.
Consider zoning: If the temperature difference between upstairs and downstairs is a significant issue, consider installing a zoning system. This allows you to control the temperature independently in different areas of your home, ensuring better comfort and energy efficiency.
If you've tried these steps and are still experiencing problems, it might be time to call a professional HVAC technician. They can diagnose any underlying issues with your AC system and provide the necessary repairs or maintenance. Before hiring a technician, do some research to find reputable and experienced professionals in your area to ensure you get the best service possible.