When your air conditioner fails to cool your home, it can be frustrating and uncomfortable. Before calling a professional, there are several common issues you can troubleshoot on your own. This guide from Appleby Systems will help you identify and potentially resolve the most frequent problems affecting your AC's performance.
Ensure that your thermostat is set to "cool", and the temperature is set lower than the current room temperature. Check if the thermostat is functioning properly and replace the batteries if necessary.
Clogged or dirty air filters restrict airflow, causing the AC to work harder and less efficiently. Check and replace your air filters regularly, ideally every 1-3 months, to maintain optimal airflow and cooling performance.
The outdoor condenser unit can become obstructed by debris, leaves, or dirt, restricting airflow and heat exchange. Make sure the unit is clean and has at least two feet of clearance around it. Clean the fins and remove any debris that might be blocking the airflow.
Low refrigerant levels due to leaks can prevent your AC from cooling properly. Look for signs of refrigerant leaks, such as hissing sounds, ice buildup on the refrigerant line, or decreased cooling efficiency. If you suspect a leak, contact a professional technician to diagnose and repair it.
The compressor is the heart of your AC system and is responsible for circulating refrigerant. If it fails, your AC won't cool your home. Listen for unusual noises from the outdoor unit, which could indicate a failing compressor. This issue typically requires professional repair or replacement.
Evaporator coils can freeze due to restricted airflow or low refrigerant levels, preventing proper cooling. Check for ice buildup around the coils. If you notice ice, turn off the AC and let the coils thaw. Address the underlying issue, such as a dirty air filter or low refrigerant, to prevent future freezing.
Electrical problems such as tripped circuit breakers or blown fuses can cause your AC to stop working. Check your electrical panel for tripped breakers or fuses and reset or replace them as needed. If electrical issues persist, consult a professional technician.
Leaky or poorly insulated ducts can cause cool air to escape before it reaches your living spaces, reducing efficiency and comfort. Inspect your ductwork for visible leaks or damage and seal any gaps with duct tape or mastic sealant.
An AC unit that is too small for your home may struggle to cool it adequately, while an oversized unit can cycle on and off too frequently, reducing efficiency. Ensure your AC is appropriately sized for your home by consulting with a professional technician.
If your air conditioner is over 10-15 years old, it may simply be nearing the end of its lifespan and losing efficiency. Consider upgrading to a newer, more energy-efficient model or heat pump to improve cooling performance and reduce energy costs.
If you've tried these troubleshooting steps and your air conditioner is still not cooling your home effectively, it's time to call in the experts. Appleby Systems offers professional AC repair and maintenance services to ensure your system runs smoothly and efficiently. Contact us today to schedule an appointment and keep your home cool and comfortable all summer long.
