🔁 AC Short Cycling Correction, Georgetown TX

Georgetown builders frequently install 4-ton systems in 2,200 sq ft homes that should have 3-ton equipment. An oversized system cools the thermostat's location rapidly, shuts off before completing a full cooling cycle, and restarts as soon as the thermostat calls again. No load calculation was performed, the builder guessed up for customer satisfaction. The fix requires either system replacement to correct sizing or careful thermostat setpoint management.

When refrigerant charge drops, low-side pressure drops below the low-pressure switch setpoint. The switch trips the system off. After pressure normalizes slightly (refrigerant redistributes at rest), the system starts again, and trips again within minutes. This cycle of starts and lockouts looks exactly like short cycling. A refrigerant charge verification and repair stops this pattern permanently.

A freezing evaporator coil causes high-side pressure to spike, tripping the high-pressure switch. System shuts off. As the coil partially defrosts, pressure normalizes and the system restarts, freezing again. The pattern repeats every few minutes. We see this in Georgetown homes after filter neglect or following partial coil cleaning that didn't remove all buildup.

A contactor that intermittently sticks open, or a capacitor failing under load, can produce irregular cycling patterns that look like short cycling. Under Georgetown's heat load, component failure often manifests as intermittent operation before complete failure.