HVAC Holly Springs NC

Replaced the thermostatic expansion valve (TXV) on a system previously installed by our company. The failed TXV was removed from the evaporator coil assembly, and a new replacement valve was installed with the sensing line properly positioned. The evaporator coil showed no signs of frost or ice, and the unit was left operating correctly.

Performed a complete heating and air maintenance with an 80-point inspection on each unit, including outdoor coil cleaning, burner cleaning, and gas pressure adjustment as needed. Removed and cleaned the flame sensor with an abrasive pad to restore reliable flame detection, and completed all safety inspections.

Responded to a heating no-call with thermostat error code 7P1 on a 2024 system. Inspected the furnace control compartment and verified system operation with a dual port manometer for pressure readings and a clamp meter for amperage (5.0 A AC) at the control circuit. No visible damage, corrosion, or wiring faults were found, and the unit was left operating properly.

Responded to a no-heat call on the downstairs system, which was producing an unusual noise from the outdoor unit and blowing unconditioned air. Performed a diagnostic inspection of the system, including a video borescope examination of the affected components, and documented the findings with photos.

Responded to a no-cool complaint on the downstairs system and inspected the York air handler, including the condensate drain system. Identified the Safe-T-Switch condensate safety switch at the drain line, which had been tripping the system off, with staining and residue indicating prior drain backup. Serviced the condensate drain components to restore proper drainage and system operation.

Responded to a no-cool complaint on a recently installed system, with the customer reporting intermittent loss of cooling and the thermostat reverting to its previous setting. Inspection revealed a crusty residue and moisture around the refrigerant line penetrations in the condenser base pan, along with torn fiberglass insulation embedded in the black foam suction line insulation in the attic framing, indicating a possible refrigerant leak or line set damage. Further leak testing and repair are recommended to restore proper cooling operation.

Performed preventive maintenance on two systems, including a mini split, with an 80-point inspection on each unit, outdoor coil cleaning, burner cleaning, gas pressure adjustment as needed, and safety inspections. Removed and washed the blower wheel to clear built-up debris, and verified heating performance with a supply-air temperature reading of 108.8°F at the register. Blower motor cleaning on the mini split was identified as outside the scope of the maintenance visit and was discussed with the customer.

Performed a complete heating and air conditioning maintenance on one unit, including an 80-point inspection, outdoor coil cleaning, burner cleaning, gas pressure adjustment, and safety inspections. Used a borescope to visually inspect the furnace interior, including the gas valve, wiring, and inducer motor assembly, and checked the attic-installed air handler and insulated flex duct runs for condition and proper operation.

Responded to a no-cool complaint on a single 5-year-old zoned system reporting reduced cooling performance. Inspected the attic-mounted zone control panel, damper actuators, and insulated supply ductwork, and found the low-voltage wiring and duct connections intact with no visible damage. Serviced and replaced a system component, labeled it with the service date for future reference, and sealed the duct seam with foil-grip tape to restore airflow and cooling capacity.

Responded to a no-cool complaint on a 15+ year-old system with water discharging from the air handler and the unit shutting down. Inspected the attic air handler and found condensate residue near the unit and drain line, indicating a drain overflow likely tripping the safety shutoff, and performed electrical diagnostics at the outdoor condenser with a clamp multimeter, including checking the control wiring and components. Recommend clearing/servicing the condensate drain line and further evaluation of the aging system.