What you can do yourself
- Replace the air filter, then every one to three months through summer
- Clear leaves, grass and plants at least two feet around the outdoor unit
- Turn the AC on during a mild spring day to make sure it cools before you really need it
- Check that water is draining from the condensate line outside
What a pro should check
- Refrigerant pressures and temperature split
- Capacitor and contactor, two of the most common summer failures
- Outdoor coil cleaning and fan motor
- Indoor coil and blower
- Condensate drain and safety switch
- Electrical connections and amp draw
- Thermostat calibration
Why spring matters in DFW
When the first 100°F week hits, HVAC companies get flooded with calls and wait times grow. Catching a weak capacitor or a slow refrigerant leak in spring is usually cheaper and far more comfortable than an emergency call in July.