In the Texas heat, an AC that runs without cooling is urgent. Work from the cheapest, easiest cause up.
Replace the Air Filter
A clogged filter chokes airflow and can ice the coil.
Fix: Swap or wash the filter monthly during cooling season.
Clean the Coils
Dirty evaporator or condenser coils cannot transfer heat.
Fix: Clear debris from the outdoor unit and have the coils cleaned annually.
Low Refrigerant
A unit low on refrigerant cools weakly and may hiss or ice up.
Fix: Refrigerant work is regulated — a licensed technician must locate the leak and recharge.
Not sure what's wrong? Book online — every visit includes a free diagnosis.