HVAC & Plumbing Contractor in Clayton, MO

Completed recall service on 1-year-old system located in attic with no cooling and non-functioning fan. Installed 454-B non-communicating RDS+ sensor, 454-B expansion valve, new disconnect with whip, and light outlet combo. Reused existing drain pan and installed wet switch with SureFlood moisture detector. Replaced non-programmable thermostat and verified all components operational. System restored to full cooling capacity with proper airflow and safety controls functioning as designed.

Responded to no-cool call on 5-year-old Lennox air handler unit. Upon arrival, found unit completely non-responsive with no power to system. Performed diagnostic testing at wall-mounted control panel and thermostat. Customer had already attempted battery replacement in thermostat without resolution, as documented on-site. Removed air handler access panel to inspect internal components and wiring connections. Traced power supply through control board, transformer, and wiring harness. Identified failed control board as root cause of system failure. Replaced defective Emerson control module and verified proper voltage at all connection points. Tested all safety circuits and confirmed proper condensate drain operation through transparent drain line section. Restored power to unit and cycled system through complete startup sequence. Verified proper communication between thermostat and air handler, confirmed all indicator lights functioning correctly, and ensured unit responded appropriately

Responded to service call for furnace inspection following recent sewage backup incident in basement. Performed thorough visual inspection of furnace control board, wiring harnesses, and internal components for water damage or contamination. Examined Lennox circuit boards, electrical connections, transformers, and all accessible wiring for signs of moisture intrusion or sewage exposure. Verified all wire connections, terminal blocks, and safety controls were intact and functioning properly. Inspected furnace exterior cabinet and base for evidence of water contact or deterioration. All components appeared dry with no visible signs of sewage damage or moisture-related issues. System operational and safe for continued use.

Responded to no cooling call on unit 10. Upon arrival, found thermostat displaying error code and HVAC system unresponsive. Performed diagnostic evaluation of electrical service and discovered tripped breaker at main electrical panel. Reset breaker, verified proper voltage supply to unit, cleared thermostat error, and confirmed system returned to normal cooling operation.

Responded to no cooling call where unit was experiencing freeze-up conditions. Upon arrival, performed diagnostic inspection of the split system with outdoor condensing unit located at side of home and air handler in attic. Identified frozen evaporator coil and determined root cause to be restricted airflow due to dirty air filter and reduced system operation from customer shutting unit off intermittently. Allowed coil to thaw completely, replaced air filter, verified proper airflow across evaporator, and confirmed system returned to normal cooling operation with appropriate temperature differential and no further icing.

Responded to no-cooling call on newly installed system that failed five hours after installation. Upon arrival, accessed attic-mounted equipment and performed diagnostic evaluation. Discovered condensate drain line blockage causing safety float switch activation, which shut down the system to prevent water damage. Cleared obstruction from drain line and verified proper drainage flow. Tested float switch operation and confirmed proper function. Cycled system through complete cooling cycle and verified all components operating within manufacturer specifications. Unit restored to full cooling capacity with no further issues detected.

Responded to no cooling call on second floor Unico system. Upon arrival, learned unit had been frozen the previous day and was turned off. Accessed attic space via pull-down stairs to inspect system. Found evaporator coil with visible copper tubing and heat exchanger assembly. Coil showed signs of oxidation and discoloration on copper lines, with brass valve and fittings present. Inspected flexible aluminum ductwork routed through attic joists and spray foam insulation areas. System had been shut down allowing coil to thaw. Documented equipment condition with photos showing coil assembly and attic installation layout for service records.

Completed routine cooling season tune-up on backyard air conditioning unit. Performed comprehensive system inspection including blower motor assembly, electrical connections, capacitor, and control wiring. Verified proper operation of all components, checked refrigerant levels, cleaned condensate drain line, inspected return air grille, and confirmed system is operating within manufacturer specifications for the cooling season.

Responded to no cooling call on 14-year-old Lennox system. Upon arrival, performed diagnostic inspection of indoor air handler and outdoor condensing unit. Accessed electrical compartment to inspect blower motor, capacitor, control board connections, and thermostat wiring. Examined outdoor unit including fan motor operation and compressor functionality. Verified all electrical connections were secure and properly terminated. System components showed typical wear consistent with age but remained operational. Completed necessary repairs to restore cooling operation to the unit.

Responded to service call for air conditioning unit experiencing excessive water leakage on a six-year-old system. Upon arrival, performed diagnostic inspection of the indoor air handler and condensate drainage system. Found the primary condensate drain line was completely blocked, causing water to overflow from the drain pan. Cleared the obstruction using appropriate drain cleaning methods and verified proper drainage flow. Inspected the condensate pump, drain pan, and associated piping for damage or additional issues. Tested the system operation to confirm proper condensation removal and verified no further leaking occurred. Unit restored to normal cooling operation with proper water drainage functionality.

Completed comprehensive cooling system tune-up on 2-year-old outdoor condensing unit. Performed full system inspection including refrigerant pressures, electrical connections, contactor operation, and capacitor testing. Inspected and documented evaporator coil access port and replaced air filter in return air housing to ensure proper airflow and system efficiency.

Completed comprehensive cooling maintenance on two 9-year-old air conditioning systems. Performed full tune-up procedures including inspection of blower motor assembly, electrical connections, and evaporator coil components. Both systems tested and confirmed operational with all components functioning within normal parameters.

Responded to callback for system not cooling with suspected evaporator coil leak. Attempted repair of refrigerant leak in evaporator coil located in attic space and recharged system with R22 refrigerant. System previously serviced for same cooling issue, indicating possible recurring leak at evaporator coil requiring further evaluation or replacement.

Responded to kitchen sink backup issue. Upon arrival, accessed cabinet beneath kitchen sink and inspected drainage system. Found P-trap assembly and connections associated with garbage disposal unit. Disassembled P-trap to clear blockage causing backup condition. Positioned collection basin to contain water and debris during service. Cleared obstruction from drain line, reassembled P-trap connections, and verified proper drainage flow restored to kitchen sink.

Completed maintenance service on two HVAC units that were not serviced during previous visit. Performed thorough cleaning and system checks on both units, replaced air filters as evidenced by documentation. Installed union fitting on condensate drain line and added water safety switch to prevent overflow damage. All systems tested and confirmed operational for both heating and cooling modes.

Completed comprehensive cooling maintenance on dual 9-year-old AC systems. Performed full tune-up procedures including inspection of blower motor assemblies, verified proper operation of all electrical connections and terminal blocks, checked refrigerant lines and drainage hoses for secure connections, and cleaned accumulated dust from internal components. Both systems tested and confirmed operational with all components functioning within normal parameters.

Completed comprehensive cooling tune-up on rooftop AC unit accessed through attic. Performed full system inspection including electrical connections, control board functionality, and blower motor components. System operating properly with normal condensation present on exterior panel, indicating effective cooling cycle performance.

Completed cooling tune-up on Unico System unit located in attic space. Performed standard maintenance procedures including inspection of suspended mounting system, ductwork connections, and thermostat operation. Unit over 10 years old is operating within normal parameters, and ecobee thermostat is functioning properly at 71 degrees.

Completed recall service on residential HVAC system under 10 years old. Installed missing clamp on ductwork hose and replaced humidifier pad that was overdue for maintenance. System inspected and returned to proper operating condition.

Responded to callback regarding contaminated tubing between HVAC units and Aprilaire humidifiers that had accumulated soot and mold buildup, which had been previously overlooked during prior service visits. Replaced all affected drain hoses connecting the dual Lennox units to their respective humidification systems, ensuring proper drainage and eliminating contamination hazard.