HVAC Services for Heating and Cooling – Oak Park, IL

Returned to complete control board replacement on Unico system. Disconnected existing wire harnesses from failed control board, removed old board from enclosure, and installed new replacement control board. Reconnected all wire harnesses including multi-pin connectors to appropriate terminals, verified proper connections for all colored wiring, and tested system operation to confirm successful repair.

# HVAC Install - Complete System Successfully completed full HVAC system replacement including furnace, condenser unit, evaporator coil, and thermostat. Installed new condenser on rooftop location with proper mounting on wooden platform for equipment stability and vibration isolation. Ran and secured refrigerant lines with appropriate insulation (suction and liquid lines) from outdoor unit to indoor coil. Connected electrical service and verified proper voltage supply to condenser. Installed new evaporator coil in air handler and ensured proper fitment and sealed connections to ductwork. Replaced furnace unit with new equipment, verifying gas connections, venting, and combustion air supply met code requirements. Installed new programmable thermostat and verified proper wiring and communication with HVAC equipment. Performed system startup and commissioning procedures. Verified refrigerant charge using digital manifold gauges, measuring superheat and subcooling values to confirm prope

Completed warranty installation of new ecobee smart thermostat. Removed existing thermostat, properly terminated and labeled all HVAC wiring connections including Rc, Rh, W1, W2, and accessory wires to corresponding terminals on ecobee baseplate, mounted unit to wall, and verified system communication with air handler unit located in attic space.

Responded to service call for air conditioning unit running continuously without shutting off. Upon arrival, accessed attic space via ceiling panel to inspect HVAC system and control board. Diagnosed faulty relay on main circuit board preventing system from cycling off when commanded by thermostat. Replaced defective relay component on green PCB control board, verified all wire terminal connections secure, and tested thermostat communication with system. Cycled unit through multiple on/off commands to confirm proper operation. System now responding correctly to thermostat inputs and shutting off as programmed.

Performed comprehensive HVAC maintenance agreement service on two rooftop units and two air conditioning systems. Completed cooling check on all equipment, replaced air filters including three 20x20x1 filters and two 16x25x1 filters, and conducted general service per contract terms of the week. Temperature readings confirmed proper system operation at 53.8°F, and all units were left in optimal working condition.

Replaced condenser unit under warranty per manufacturer coverage. Verified proper refrigerant pressures, superheat at 12.0°F, and subcooling at 1.2°F using calibrated HVAC diagnostic gauges. System operating within normal parameters with satisfactory airflow across coil and appropriate temperature differentials confirmed.

Completed warranty replacement of defective condenser unit. Performed comprehensive inspection of refrigerant lineset from indoor air handler to outdoor condenser, verifying proper insulation, support, and absence of physical damage or restrictions. Tested new condenser operation with digital multimeter to confirm proper electrical readings and system functionality. Documented installation with photos showing replaced equipment and existing lineset configuration in basement mechanical space.

Completed comprehensive maintenance service on two air conditioning systems and air handlers as part of preventative maintenance agreement. Inspected vertical-mount air handler unit in interior mechanical closet and attic-mounted air handler system, verifying proper operation of blower motors, internal components, and flexible ductwork connections. Both systems operational with no deficiencies noted at time of service.

Completed warranty repair involving removal of existing air handler and replacement of SpacePak evaporator coil. Following installation, performed comprehensive pressure test on all brazed joints at the condenser coil to verify system integrity and confirm leak-free operation. All connections tested and passed inspection with no refrigerant leaks detected.

Completed comprehensive HVAC maintenance agreement service on air conditioning and air handler system. Performed system inspection, documented interior components including blower motor assembly and evaporator coil condition, and verified supply air temperature reading of 45°F at register. Filter replacement not included per agreement terms.

Completed full HVAC system installation including Unico air handler, Bosch heat pump outdoor unit, and evaporator coil. Installed flexible ductwork routed through interior wall cavity with proper support and insulation. Ran refrigerant line set and condensate drain lines from air handler to outdoor unit location. Mounted air handler in interior closet space with appropriate clearances for service access. Wired system per manufacturer specifications including thermostat connections, reversing valve controls, and multi-stage heat pump configuration. Verified all electrical connections at terminal blocks and transformers following single-stage and multi-stage wiring diagrams. Installed PVC condensate drain with proper pitch and termination. Secured all refrigerant lines and electrical conduit. System commissioned and tested for proper heating and cooling operation. Two-technician installation completed in one day.

Completed comprehensive maintenance agreement service on dual condenser HVAC system for recently purchased residence with unknown equipment age. Performed thorough inspection and cleaning of both easily accessible condenser units, verified proper operation of air handling unit located in attic space, and inspected associated flexible ductwork and insulation throughout the system. All equipment found to be functioning within normal parameters at time of service.

Performed follow-up inspection and verification on recently installed AC unit that experienced multiple service issues during initial two-month operation period. Conducted comprehensive system diagnostics using onboard control board display showing operational status code 272. Inspected electronic control board assembly including upper and lower PCB sections, verified proper LED display function, and examined all wire connections for secure termination. Cleared condensate drain line of accumulated debris and ice buildup to restore proper drainage flow. Confirmed all system components operating within manufacturer specifications and unit cycling properly without fault codes.

Conducted comprehensive HVAC system evaluation at residential property for replacement estimate of underperforming 3-year-old forced air system. Accessed attic space via ladder to inspect air handler unit, flexible ductwork configuration, and insulation coverage. Documented existing gray metal air handler installation with connected black insulated and metallic flexible ducting, noting duct routing patterns and connection points. Assessed fiberglass insulation condition, observing uneven coverage and gaps in both yellow and pink batt materials across attic floor joists. Photographed complete system layout including exposed wooden roof structure, diagonal support beams, and HVAC component placement for replacement planning purposes. Verified system accessibility and spatial constraints for future equipment upgrade considerations.

Responded to residential apartment for tanked water heater with pilot light failure. Upon arrival, inspected 15-year-old gas water heater located in basement utility room. Pilot light would not ignite or remain lit after multiple restart attempts. Performed diagnostic testing of thermocouple, gas control valve, and pilot assembly. Observed evidence of water damage on concrete floor surrounding unit, indicating previous or ongoing leakage. Given the age of the equipment and failed ignition system components, recommended full water heater replacement due to end of serviceable life expectancy and potential safety concerns with continued operation. Unit had reached typical lifespan for residential tanked water heaters and showed signs of deterioration. Provided property owner with replacement options and specifications for new installation.

Responded to callback for recurring freeze-up on recently installed HVAC system with multiple unresolved prior visits over past month. Upon arrival, documented frozen evaporator coil with ice accumulation on outdoor condenser unit. Inspected control board, wiring connections, and blower assembly for installation defects or component failures that could cause repeated freeze conditions. Photographed control board configuration and outdoor unit placement for quality review. Customer requested management escalation due to ongoing system performance issues since installation approximately two months ago.

# HVAC Installation Summary Successfully completed full air conditioning system replacement including outdoor condensing unit, indoor air handler, and evaporator coil. Installation was performed by two-person crew and completed within one day. # Work Performed Removed existing outdoor condenser unit and installed new replacement unit with proper refrigerant line connections and electrical hookup. Replaced indoor air handler assembly in attic space, ensuring proper mounting and structural support using chain suspension system. Installed new evaporator coil with appropriate refrigerant line connections. Configured ductwork connections to air handler using insulated flexible duct with proper sealing. Installed new condensate drain line using PVC piping with appropriate slope and securing brackets to floor joists. Applied reflective radiant barrier insulation around air handler and ductwork to minimize heat transfer in attic environment. Verified proper airflow and temperature differe

Completed preventive maintenance inspection on residential air conditioning system under maintenance agreement. Performed diagnostic testing of system components including temperature and humidity readings in attic-mounted equipment, verified proper operation of ductwork and plenum connections, and inspected electrical components and safety devices for proper function. All metallic surfaces showed normal condensation consistent with active cooling operation, flexible ductwork and connections found in serviceable condition.

Responded to no cooling complaint on 1-year-old residential air conditioning system. Replaced failed fuse in condensing unit to restore power to compressor circuit. Installed additional ductwork run in attic space using rigid galvanized metal duct sections with insulated flex connections. Measured and fitted duct collar transition at branch takeoff point to ensure proper airflow distribution. Secured all ductwork connections and verified system operation with adequate cooling performance restored.

Responded to service call for second opinion on 20-year-old residential air conditioning unit with no cooling condition and suspected refrigerant leak. Upon arrival, performed comprehensive system evaluation including visual inspection of outdoor condensing unit, electrical components, and refrigerant circuit. Connected manifold gauge set to service ports and confirmed low refrigerant charge with abnormal pressure readings on both high and low sides, indicating significant refrigerant loss. Inspected capacitor, contactor, and wiring harness for proper operation and connections. Verified compressor electrical components and control circuits functioning within specifications. Documented system condition with photographs showing pressure gauge readings and internal electrical compartment including Turbo200 capacitor and associated wiring. Confirmed previous diagnosis of refrigerant leak and advised customer that due to advanced age of equipment (20+ years), locating and repairing leak fol