Same-DayDiagnosis
ResidentialCommercial
California Lic.#1091355
HVAC Mar 21, 2026 1 min readUpdated Sep 30, 2026

AC service in Sunnyvale – refrigerant recharge and leak check

The customer reported that the air conditioning system was cooling very slowly. The unit was still running but could not keep the house cool. Our technician performed a full diagnostic to determine the cause of the weak cooling performance.

AC service in Sunnyvale – refrigerant recharge and leak check
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AC Repair – Refrigerant Recharge and Leak Check | BDP 538ANX024000C

The customer reported that the air conditioning system was cooling very slowly. The unit was still running but could not keep the house cool. Our technician performed a full diagnostic to determine the cause of the weak cooling performance.

Diagnostic result:
✅ Low refrigerant level detected

The system was operating with insufficient refrigerant, which caused reduced cooling performance and longer run time. The unit was inspected for leaks, refrigerant pressure was checked, and the system was serviced to restore proper operation.

Work performed:
✅ Refrigerant level checked
✅ System inspected for leaks
✅ Refrigerant added to required level
✅ System tested after service

After the repair, the AC returned to normal cooling performance and is now working properly.

Repair cost:
✅ Under $600
Diagnosis is free with repair.

Tip for homeowners:
If your AC is still running but cooling weaker than usual, the reason is often low refrigerant. Running the system in this condition can overheat the compressor and lead to expensive repairs. Early diagnostic and recharge usually cost much less than compressor replacement.

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