HVAC & Plumbing Contractor in Clayton, MO

Replaced defective time delay relay on air handler unit serial number 2103047377. Accessed electrical control panel, disconnected faulty relay from terminal block connections, and installed new replacement relay with proper wire terminations. Verified all electrical connections were secure and system operation was restored to normal function.

Responded to no cooling complaint on 4-year-old Lennox attic unit. Upon inspection, found corroded and deteriorated wire connections at the control board and terminal blocks, with visible rust on multiple connection points. Cleaned all corroded terminals, re-secured loose wire connections, and tested all electrical circuits for proper voltage and continuity. System restored to normal operation with proper cooling function confirmed.

Conducted on-site assessment of commercial garage area to provide estimate for exhaust fan replacement. Evaluated existing 10-year-old exhaust fan unit mounted in garage space, documented electrical panel configuration and conduit routing for proper integration of new fan installation. Photographed existing conditions including electrical infrastructure, wall mounting location, and surrounding utility systems to ensure accurate bid preparation for single exhaust fan replacement unit.

Returned to property to complete filter installation as scheduled. Installed two 20x20x4 filters and four 2-inch filters per specifications. Parts were picked up from Johnstone Earth City location. During service, observed evaporator coil with significant frost and ice buildup, indicating potential airflow restriction or refrigerant issue that may require future attention. All replacement filters were properly installed and old filters were disposed of. System confirmed operational for both heating and cooling modes upon completion.

Completed inspection of residential HVAC system located in utility closet apartment unit. Verified proper operation of air conditioning system including control module, electrical connections, and safety components. Documented existing equipment condition with photographs showing control box with multi-wire connections, finned heat exchanger coils, and mounted Safe-T-Switch SS2 condensate overflow safety device on drain line. All components confirmed operational and system functioning as designed.

Installed replacement hockey puck wet switch in attic-mounted HVAC system as warranty repair. Verified proper operation with green indicator light illuminated and confirmed unit heating and cooling functions operating normally upon completion.

Responded to return visit to replace filter dryer on outdoor condensing unit. Accessed refrigerant circuit, removed failed filter dryer, and installed new replacement component with proper brazing techniques. Verified refrigerant lines were properly connected, system was secured, and unit was returned to operational status. Removed old part from site per standard disposal procedures.

Installed two Trane room sensors on the main floor to address temperature variance issues, with one sensor positioned in the hottest zone and another in the coolest zone. Verified proper sensor operation and calibrated system settings to ensure accurate temperature readings throughout the space.

Completed installation of blue tube UV light system and replaced 210 filter on west attic HVAC unit. System tested and confirmed operational with heating and cooling functions working properly.

Responded to service call for Carrier thermostat failing to cycle off air conditioning system when set temperature was reached, resulting in overcooling. Inspected 15-year-old rooftop unit and evaluated thermostat programming and calibration settings. Documented existing thermostat configuration showing temperature differential and cycling parameters for diagnostic purposes.

Completed evaporator coil replacement in attic-mounted air handling unit. Removed and disposed of failed coil exhibiting severe oxidation and corrosion on copper tubing. Installed new A-coil assembly with proper refrigerant line connections, reconfigured condensate drain system using 3/4" PVC union, six 90-degree elbows, drain pan fitting, and appropriate primer and flue components. System tested and operational upon completion.

Responded to no cooling complaint on upstairs Lennox air conditioning unit approximately 10-12 years old located in attic space. Upon arrival, performed system diagnostics and temperature measurements using calibrated digital thermometer on supply ductwork. Inspected air handler unit, ductwork connections, and flexible duct runs for proper airflow and system operation. Documented equipment condition and attic installation with photos showing main supply plenum, metal ductwork assembly mounted on floor joists, and insulated flex duct distribution. Verified system specifications and confirmed unit is covered under 2-year equipment warranty with compressor manufacturing date of 2022.

Responded to no cooling call on 3-year-old Lennox system. Upon arrival, found thermostat displaying 84°F room temperature with setpoint at 77°F and system calling for cooling. Performed diagnostic testing using capacitor analyzer on outdoor unit. Identified failed dual run capacitor preventing compressor and condenser fan operation. Replaced defective capacitor with OEM equivalent, verified proper microfarad readings and voltage supply. Cycled system through complete cooling cycle, confirmed compressor engagement, proper refrigerant pressures, and condenser fan operation. Verified thermostat satisfied cooling demand and system operating within manufacturer specifications. Unit restored to full cooling capacity.

Responded to no cooling complaint on single outdoor condensing unit. Upon arrival, found condenser coil heavily loaded with dust and debris accumulation, restricting airflow through heat exchanger fins. Cleaned condenser coil thoroughly to restore proper heat transfer capability. Verified unit operation with adequate airflow and proper cooling cycle restored. System returned to normal operating condition.

Responded to no cooling complaint on 10+ year old split system with attic air handler and backyard condensing unit. Upon inspection, found outdoor unit completely non-operational with blower motor failure and extensive corrosion throughout the condensing unit cabinet, copper refrigerant lines, and coil assembly. Documented severe rust damage to metal framework and oxidation on refrigerant tubing, indicating prolonged moisture exposure and end-of-life system condition. Advised customer of findings and provided repair options versus full system replacement recommendation due to age and deteriorated state of equipment.

Responded to service call for outdoor unit making excessive noise and inadequate cooling performance. Upon arrival, inspected condenser unit and found fan motor operating with abnormal sound levels, indicating bearing failure or motor degradation. Verified unit was struggling to maintain desired temperature setpoint. Documented equipment condition with photos of outdoor disconnect panel and surrounding installation area. Diagnosed failing condenser fan motor as primary cause of reduced cooling capacity and excessive noise. Recommended motor replacement to restore proper system operation and prevent complete failure.

Replaced failed blower motor assembly (CFM) on outdoor condensing unit. Removed old blower wheel and motor showing significant dust accumulation, installed new assembly, and verified proper operation. Old components disposed of per protocol.

Responded to water leak complaint from indoor air handler unit. Upon arrival, found condensate drain line clogged, causing water to back up and overflow into collection bucket when system operates. Cleared obstruction from drain line, verified proper drainage flow, tested system operation, and confirmed no further leakage occurring.

Responded to service call for intermittent unit shutdown due to moisture sensor alerts in drain pan on recently installed system. Accessed crawlspace air handler with ladder and inspected condensate drain system and safety float switch. Verified control board connections and sensor wiring at air handler control panel. Brought replacement backup sensor as requested and completed system diagnostic to resolve false moisture detection causing premature shutdowns.

Responded to no cooling complaint on older outdoor AC unit servicing unit #832, located at side of building #830. Upon arrival, found unit off with only fan operating. Connected refrigerant manifold gauges to diagnose system, revealing abnormal pressure and temperature readings indicating potential refrigerant issue or system malfunction. Observed heavily soiled condenser coil with significant dirt and debris accumulation between fins, restricting airflow and reducing heat transfer efficiency, which would contribute to reduced cooling capacity and system performance issues.