find an HVAC contractor will catch the main culprits that cause your air conditioning system to not blow cold air. Typical reasons include a faulty thermostat, clogged filter, or a dirty condenser coil. An HVAC professional will clean and tighten all the wires in your thermostat, replace your her comment is here filter, and clean up your AC condenser and its condenser coil.It’s only when there’s a leak that refrigerant will need to be added, either periodically if the leak isn’t fixed, or a single time once the leak has been repaired.The thermostat controls the temperature in your home. During a tune-up, technicians will check if it’s calibrated correctly and if it’s reading temperatures accurately.Therefore, it is very unlikely you will suffer a leaky air conditioner this cooling season. The heating and air conditioning share the same condensate line, so it kan zijn important to get a heating tune up before winter as well. A professional air conditioner tune-up typically involves cleaning the condenser coils and checking refrigerant levels to ensure optimal performance.