HVAC in Oklahoma City eats dust and hail. A south wind off open ground packs the condenser until it runs hot and the rooms do not cool. Hail on a fringe lot with no fence tree to take the hit will comb the fins flat in one pass. Long ranch attics hide flex duct that has fallen off a collar, so one bedroom cooks while the hallway freezes. The thermostat is a poor narrator. The outdoor unit and the attic are better ones.
Report the symptom without a theory you are married to. House hot, house cold, air clammy, unit silent, fan dead, coil iced, fins mashed, filter new or filter forgotten. If the trouble started the evening the lights blinked, say that. If it started after a week of red wind, say that. Lake Hefner and the open north side load equipment with the same dirt as the south fringe. Do not assume a leafy street near the Plaza spared you. Check the coil.
Heating is the surprise in a city people think of as hot. A front arrives at night, the heat pump or the furnace has been idle, and the house does nothing. No heat leads the call. Burning smells and gas odors lead even earlier, from outside if you have left the house, which you should. Stop flipping the breaker. Say how the indoor half is housed: closet, attic, or garage.
You can look at the condenser without becoming a mechanic. Fins flat or fins open. Coil face caked or coil face clear. Disconnect still seated. Unusual noise, or the particular silence of a unit that used to hum at dusk. Share those observations and stop. Do not pull wires and do not spray the coil with a harsh mix that drives dirt deeper. A rinse is not the call. The call is the call.
Oklahoma City will dust the equipment back up and may hail it again. Phone with the part of town and what the system is failing to do. Know if the outdoor unit runs. Call the number on this page.