Dust and hard afternoon sun expose small cooling losses quickly.
Buffalo Gap’s dry heat and strong sun put an air conditioner under a long, steady load. A system with a small loss of performance may seem adequate in milder weather, then fall behind as the afternoon heat builds. Dirty outdoor coils, a fan that is slowing down, restricted filters, refrigerant faults, and duct leakage in a hot attic all show up more clearly when the equipment has little break from the heat.
Dust on the outdoor coil matters because that coil has to release heat outside before the system can cool indoors. When its surface is dirty, heat rejection suffers and the AC has to work harder to keep up. We check coil condition along with airflow, temperature split, electrical operation, and duct losses rather than treating a warm-house complaint as proof that the equipment is too small.
Intense sun also brings out room-to-room differences. Rooms taking more afternoon sun, or areas below weak attic insulation, gain heat faster than the rest of the house. If the cooling problem began after a storm, we also consider physical damage to the outdoor coil and electrical components as part of the inspection.