AC, Furnace & Plumbing Services in St. Charles, MO

Performed a fall heating tune-up on the approximately 10-year-old furnace, with the air handler also checked per the request. No heating issues were reported and the system was operating normally. The Aprilaire whole-house humidifier mounted on the supply plenum was inspected and showed no visible rust, frost, or damage.

Performed a routine seasonal heating tune-up on the Lennox furnace, inspecting and servicing the system for safe, efficient operation with no issues reported. Inspected the bypass-style whole-home humidifier mounted on the supply duct, including the saddle valve supply line, drain line, and flexible duct connection, and found the unit and ductwork clean and intact with no signs of rust, leaks, or damage. System left operating normally.

Technician arrived for the scheduled furnace tune-up within the appointed time window but was unable to gain access to the property, with no response at the door or by phone. Multiple contact attempts were made and an attempt to reschedule was unsuccessful, so no maintenance was performed on the unit. A missed-service notice was left on the entry door.

Responded to a no-heat condition and replaced the failed flame sensor, restoring proper flame proving and ignition sequence. Inspected the control board, noting dust accumulation and corrosion on several resistor leads and solder joints, and verified furnace operation through a complete heating cycle. The failed part was discarded.

Performed a heating tune-up on a single furnace unit over 10 years old. Inspected the cabinet and interior components, replaced the air filter with a new 20x25x1 pleated filter to restore proper airflow, and used a clamp meter to measure electrical draw on the system's components. The system operated normally with no visible frost, rust, or damage observed.

Performed a heating tune-up on a single gas furnace (under 10 years old), including inspection and cleaning of the flame sensor and verification of burner ignition and flame operation. Inspected the flue venting, gas line connections, electrical connections, and return-air components, and verified combustion and airflow readings with a handheld meter. The system was left operating properly following the tune-up.

Performed a complete tune-up on a single gas-fired furnace, inspecting the burner assembly, gas valve, manifold, inducer motor, and control board wiring for proper condition and operation. Found the return air filter heavily soiled with significant dirt loading that restricts airflow, and recommended replacement to restore proper airflow and system efficiency.

Diagnosed a no-heat condition on a basement furnace that cycled three times before locking out, and traced the fault to a contaminated flame sensor failing to prove flame. Removed the flame sensor for inspection, cleaned the probe, and reinstalled it, then ran the unit through a full heating cycle to confirm stable ignition, sustained flame, and normal operation.

Replaced the failed inducer motor on the gas furnace, then verified proper draft operation and a complete heating cycle. Disposed of the removed motor and noted moisture staining and corrosion on the floor and adjacent piping around the base of the unit, which should be monitored for a possible leak source.

Responded to a water leak complaint on a single gas furnace and inspected the unit, finding standing water on the floor, rust staining at the vent and pressure switch tubing area, and mineral deposits on the blower housing, indicating condensate or moisture intrusion. Documented all affected components and conditions for evaluation of condensate drain, trap, and flue vent integrity.

Responded to a no-heat call on a gas furnace presenting with a buzzing sound, no inducer motor activation, and a 3-flash fault code on the control board status light. Inspected the system, including supply ductwork temperature readings and a borescope inspection that revealed a tear in the foil-wrapped duct interior, and diagnosed the inducer/pressure switch circuit fault as the cause of the heat failure. Photo documentation of the findings was captured for the service record.

Performed a heating tune-up on one furnace, including electrical testing with a true-RMS clamp meter to verify amperage draw on the motor/control circuit, which measured approximately 2.07 A AC within normal operating range. Verified thermostat operation with the system switch set to heat and confirmed proper call for heat and calibration at a 72°F setpoint, with no abnormal conditions found. Unit operated normally at completion.

Repaired the baseboard heating unit that was causing a no-heat condition by replacing the damaged section of copper supply piping, including the 90-degree elbow, using press-style fittings. Removed and discarded the failed components, inspected the surrounding aluminum fin-tube element, and restored the baseboard cover to complete the repair.

Performed routine heating tune-up on a 10+ year-old gas furnace and ductless unit, inspecting the burner assembly, gas valve, inducer motor, pressure switch, venting, and wiring connections. Found heavy rust and corrosion on the gas supply piping and fittings near the burner assembly, along with staining on the burner housing and a disconnected crimp terminal on a green wire; recommend further evaluation and repair of the corroded gas piping. System was operating properly at the time of service.

Performed a seasonal heating tune-up on a Goodman furnace, inspecting internal wiring and components and measuring amp draw with a clamp meter to verify proper electrical operation. Checked supply duct temperatures to confirm normal heating performance; the system was operating properly with no faults or symptoms found. Noted cracked and deteriorated insulation on the refrigerant line set, which should be replaced to prevent energy loss and condensation issues.

Performed a heating tune-up on two gas furnace units, including inspection of the burner assembly, flue venting, and heat exchanger, along with cleaning and testing of safety controls and ignition components. Verified proper combustion, draft, and airflow through the plenum and ductwork; no visible rust, frost, or damage was found, and both units were operating normally at completion.

Performed an on-site estimate for new light fixture installation in a kitchenette area, assessing the existing flush-mount ceiling fixture in the drop ceiling and the three-light vanity-style fixture above the sink, along with nearby switch and receptacle locations. Documented existing conditions and confirmed no visible damage or code concerns, with the work scope prepared for fixture replacement.

Performed a complete tune-up on a single gas furnace, including inspection of the blower motor assembly, control board, wiring, pressure switch, and condensate/PVC piping. Verified electrical operation with a clamp meter, measuring amperage draw on the blower circuit, and removed accumulated dust and debris from the cabinet interior. Confirmed the filter housing and components were in proper working order.

Performed a seasonal tune-up on one 9-year-old gas furnace, including inspection of the unit and verification of operation in heat mode. Inspected the return air filter and confirmed proper airflow components. Verified thermostat communication and operation, noting a wireless signal fault indicator and cracking in the wall surface around the thermostat mounting.

Diagnosed a thermostat with no power or display and a furnace running continuously by inspecting the low-voltage control circuit, including the 24V transformer, wiring connections, and control board. Verified the transformer and low-voltage wiring at the furnace control board, restored 24V power to the thermostat circuit, and confirmed the furnace now cycles on and off normally in response to thermostat calls for heat.