Heating and Cooling in Winnetka, Illinois

Responded to no cooling call and investigated reported leak from kitchen duct. Upon inspection, found moisture issue in mechanical room affecting ductwork, with drywall already opened by previous plumber. Documented existing plumbing and HVAC infrastructure, including water heater, copper piping with brass fittings, and horizontal duct runs. Measured duct components and assessed system layout to determine source of leak and provide estimate for circulating pump replacement as requested by customer.

Completed comprehensive maintenance agreement service on dual HVAC system including two outdoor condensing units, two furnaces, and humidifier. Performed full system inspection and cleaning of both condensers positioned on exterior concrete pad, checking refrigerant levels, electrical connections, and contactor operation. Inspected and serviced both furnace blower assemblies, verifying proper airflow through centrifugal fan wheels and checking motor operation. Replaced two 16x25x1 air filters across both systems. Evaluated humidifier function and water supply connections. All equipment operational and running within manufacturer specifications upon completion.

Responded to callback for non-operational first floor AC and blank Nest thermostat following previous maintenance visit. Upon arrival, inspected thermostat and HVAC system, verified proper power supply restoration, and confirmed thermostat display was functioning correctly showing 71°F. Tested first floor AC operation and verified system cooling properly with no issues found related to prior service work.

Completed comprehensive cooling maintenance agreement service on three air conditioning systems with gas furnace included. Performed thorough inspection of Lennox furnace installation in basement utility area, checking all PVC venting connections, drainage lines, and electrical components. Accessed and inspected capacitor compartments on multiple AC units, verifying proper operation of run capacitors (including 10mfd blower capacitor), contactors, and all electrical connections. All wiring terminals were found secure with appropriate color-coded connections intact. Documented equipment conditions through photographic records for maintenance history. All systems operational and performing within manufacturer specifications upon completion of preventive maintenance inspection.

Completed comprehensive maintenance inspection on dual air conditioning systems under service agreement. Inspected attic-mounted HVAC ductwork, confirming flexible duct integrity and proper insulation installation with radiant barrier. Examined furnace heat exchanger and burner assembly, noting normal condensation patterns on heat exchanger surface and verifying proper burner operation. All accessible components photographed and found to be in satisfactory working condition. Filter size 16x25x4 not included per agreement terms.

Completed comprehensive maintenance agreement service on two condenser units. Inspected electrical compartments revealing aged capacitor and multiple contactors with proper wiring connections intact. Observed significant debris accumulation on condenser coils requiring attention. Documented equipment condition showing weathering consistent with extended service life, including 4x15 marking on electrical panel. Both units assessed and photographed for maintenance records.

Completed warranty callback to install Infinity backplate on recently installed thermostat. Removed existing thermostat cover, secured new backplate to wall, verified all wire connections (R, Y, G, W, C) were properly terminated to circuit board, and reinstalled thermostat. System tested and operational upon completion.

Completed comprehensive spring cooling tune-up on two air conditioning systems per maintenance agreement protocol. Performed thorough inspection of condenser coils for cleanliness and leaks, verified refrigerant charge levels, and tested indoor relative humidity levels. Inspected blower motor and wheel assemblies for debris accumulation, cycled all operating controls, and verified proper function of line voltage switches and wiring connections. Examined electrical components including capacitors and contactors for tight connections and signs of deterioration, confirmed condensate drainage system operating properly, and inspected refrigerant lines for visible leaks and insulation integrity. Both units found in good operating condition with all safety and performance parameters within manufacturer specifications.

Replaced condenser unit and evaporator coil for upper level HVAC system. Installation completed by two-person crew in approximately four hours, including electrical disconnect box mounting, refrigerant line connections, and system startup. Thermostat displayed software upgrade error requiring USB flash drive troubleshooting during commissioning process.

Responded to no cooling complaint with unit unable to maintain temperature below 80 degrees and low airflow. Performed diagnostic evaluation using manifold gauge set to check refrigerant pressures and system performance. Inspected electrical components including capacitor and contactor, verified wiring connections, and assessed overall system operation to identify root cause of cooling deficiency.

Completed comprehensive cooling and heating maintenance agreement service on residential HVAC system. Performed routine inspection of outdoor condenser units, verified proper operation of all equipment components, and documented existing conditions with photographic evidence. Inspected locking mechanism hardware and confirmed all units are functioning within normal parameters.

Responded to no cooling complaint on recently installed AC system. Performed diagnostic testing on Carrier furnace and air handler assembly using multimeter to verify electrical connections and system operation. Confirmed all installation components including venting, drainage lines, and humidifier integration were properly installed and functioning as designed, with system now operating within manufacturer specifications and delivering proper cooling performance.

Returned to property to complete warranty work on HVAC system by connecting low voltage wire that was left disconnected on previous visit. Located electrical panel serving dual-zone HVAC system with Lenox upstairs AC condenser and Bosch downstairs AC condenser circuits clearly labeled. Accessed control board assembly and verified proper wire termination at terminal blocks. Connected low voltage control wire to appropriate terminal on circuit board, ensuring secure connection at screw terminal. Verified all wire connections were properly seated and tightened at both the control board and central relay component. Tested system operation to confirm proper communication between thermostat and equipment. System now operating as designed with all control wiring properly connected and functional.

Performed comprehensive maintenance inspection on dual HVAC system consisting of two air handlers and two condensing units. Investigated reported issue of system shutting off and tripping breaker despite recent electrical rewiring by electrician. Conducted diagnostic testing including airflow measurements at supply registers and thorough visual inspection of both air handler units in attic mechanical space, checking electrical connections, refrigerant lines, condensate drainage, and all safety controls to identify source of electrical short occurring when system operates.

Completed comprehensive HVAC maintenance agreement service on Carrier system, including inspection of outdoor condenser unit and indoor air handler/furnace. Verified proper operation of all components, checked refrigerant lines and electrical connections at disconnect box, and replaced 16x25x1 air filter per agreement terms.

Conducted comprehensive evaluation of existing 30+ year old Space Pak HVAC system for full replacement. Unit located in attic space with favorable accessibility for equipment removal and installation. Assessed existing flexible ductwork, electrical panel configuration, and copper refrigerant line routing. Documented current system layout including metallic flex duct runs, electrical connections, and mechanical infrastructure to develop accurate replacement specifications and installation plan.

Completed comprehensive maintenance on two air handling units and two condenser units as part of routine service agreement. Performed temperature differential measurements on supply ductwork and replaced heavily contaminated air filters with new units. All systems inspected and serviced according to preventative maintenance protocol, with equipment operating within normal parameters upon completion.

Responded to no cooling complaint on rooftop unit accessed via 15-foot telescopic ladder. Upon inspection, found unit blowing hot air with visible signs of aging electrical components including corroded wire terminals and discolored connections at the contactor assembly. Observed accumulated dirt and debris in electrical compartment along with weathered capacitor and wiring showing service wear. Measured clearances between mechanical components and ductwork to assess system configuration and accessibility for repairs.

Completed comprehensive maintenance agreement service on two air conditioning systems. Replaced both 16x20x1 air filters, which showed significant dust and debris accumulation. Documented filter condition before and after replacement, confirming proper airflow direction and system accessibility in mechanical spaces.

Responded to callback for gas odor at pilot assembly on Prestige tankless water heater. Replaced defective pilot assembly and verified proper combustion with no gas leaks detected. System tested and returned to normal operation with antifreeze protection maintained.