Heating & Cooling Services in Chicago, IL

Completed warranty replacement of defective wireless relay on residential HVAC system. Verified proper operation of furnace and air handler communication after installation, confirmed all system controls responding correctly with indicator lights functioning as designed.

Completed preventative maintenance tune-up on two Mitsubishi ductless mini-split systems, approximately 6-10 years old, with one unit located in the kitchen and one in the bedroom. Performed standard inspection, cleaning, and testing procedures on both indoor wall-mounted evaporator units and outdoor condensing units, utilizing ladder for access to exterior components. Verified R-410A refrigerant levels, checked electrical connections, cleaned filters and coils, tested operational performance, and confirmed both systems are functioning properly.

Responded to service call for non-operational air conditioning system with furnace blower and heating functioning properly. Evaluated existing Rheem Classic 90 Plus furnace and outdoor condensing unit, both over 15 years old. Diagnosed failed outdoor AC unit unable to engage when thermostat switched to cooling mode. Provided comprehensive system replacement estimate for new HVAC equipment to restore full heating and cooling functionality to the residence.

Completed spring clean and check maintenance on air conditioning system per comfort plan agreement, including rollover furnace maintenance from fall 2024 season. Performed comprehensive system inspection, electrical testing with clamp meter to verify proper voltage and amperage at control board and compressor circuit, checked all wire connections and terminals for security and proper operation. System tested and operating within manufacturer specifications with all safety controls functioning correctly.

Conducted comprehensive estimate for replacement of residential air conditioning system for ranch-style home. Existing outdoor condenser unit is over 10 years old and requires full replacement. Evaluated current HVAC installation including outdoor AC condenser unit positioned on concrete pad adjacent to building exterior, and inspected indoor air handler/furnace system located in basement with existing PVC condensate drainage and venting infrastructure. Provided new customer with detailed replacement options and specifications for complete AC system upgrade.

Completed annual air conditioning clean and check maintenance per Comfort Plan agreement. Performed comprehensive system inspection including electrical measurements with clamp meter showing 6.97 amp draw, verified supply air temperature at 57°F, and inspected all internal components including capacitors, wiring connections, and control boards. All components operating within normal parameters with no deficiencies noted.

Conducted mini-split system consultation for residential property currently utilizing window air conditioning units. Assessed mechanical room containing existing water heater and plumbing infrastructure, as well as exterior building envelope to determine optimal placement for indoor and outdoor mini-split components. Provided estimate for ductless mini-split installation with available utility rebate program eligibility.

Conducted on-site walkthrough and assessment for ductless mini-split installation on main floor of residential property. Evaluated L-shaped living/dining room and kitchen area for multi-zone system placement, photographed existing 200A electrical panel to verify capacity for additional HVAC load, and determined equipment requirements for Mitsubishi ductless AC system to complement existing second-floor ducted HVAC.

Completed full system replacement including reclamation of existing refrigerant from old condenser, coil, and line-set, followed by removal and disposal of failed equipment. Installed new Lennox 13 SEER2 4-ton single-stage air conditioning condensing unit (Model ML13KC1-048-230) on leveled pad with pea gravel, along with matching evaporator coil connected to existing copper refrigerant lines. System was evacuated to remove moisture and air, then charged with R454B refrigerant to manufacturer specifications. Installed integral refrigerant detection system (RDS) to existing furnace for safety compliance. Performed complete system startup, tested all operating parameters, verified proper airflow and refrigerant pressures, and conducted comprehensive safety inspection with all equipment functioning within normal operating range.

Responded to no-cool condition on less than 5-year-old system displaying Code 430 (OU Inverter Compressor Startup Fail). Upon arrival, verified system was off per homeowner's precaution to protect inverter board. Investigated history of previous fault codes including Code 413 (High Pressure Lockout) and Code 487 (High Superheat) experienced during heating operation. Performed diagnostic testing on inverter board, measured compressor winding resistance to check for electrical faults, and inspected reversing valve for proper operation and potential restriction. Replaced air filter with 20x25x1 unit. System covered under warranty from recent installation.

Completed comprehensive clean and check maintenance service on rooftop air conditioning system per Comfort Plan agreement. Accessed unit on upper roof level, performed full system inspection including electrical components, capacitor, contactor, and refrigerant lines, verified thermostat operation showing proper temperature control at 69°F, and confirmed all components are functioning properly with no visible signs of wear or deterioration.

Responded to service call for 14-year-old air conditioning system experiencing operational concerns. Conducted comprehensive system evaluation and diagnostic assessment of existing HVAC equipment, including Rheem Performance Plus unit and associated ductwork. Documented current system configuration with photographs showing mechanical room layout, copper refrigerant lines, insulated ductwork, and electrical connections. Completed maintenance plan renewal process and provided customer with findings regarding system performance and replacement options for aging air conditioning equipment.

Responded to service call for non-functioning air conditioning system. Upon arrival, performed comprehensive diagnostics to identify the root cause of the cooling failure. Determined that a complete system replacement was necessary and proceeded with full HVAC installation, including new air conditioning unit and evaporator coil. Verified proper clearances around new Carrier equipment per manufacturer specifications and ensured adequate spacing from existing ductwork and insulation. System commissioned and tested successfully with all components operating within normal parameters.

Responded to report of air conditioning system leaking. Upon arrival, conducted thorough inspection of HVAC system and associated plumbing connections. Investigation revealed significant corrosion and deterioration on metal piping in mechanical space, with heavy rust damage and peeling protective coating on larger diameter pipe. Identified green corrosion and oxidation on smaller adjacent pipe with accumulated moisture damage. Further inspection of plumbing assembly showed aged copper pipe with oxidation and tarnishing connected to white PVC pipes secured with metal clamps. Noted visible wear, grime accumulation, and signs of long-term moisture exposure on all piping components. Documented existing conditions with photographs showing extent of corrosion, paint deterioration, and surface degradation throughout pipe assembly. Determined source of reported leak and assessed whether issue was related to building infrastructure or tenant-specific equipment. Provided diagnostic findings and

Responded to no-cooling call on 3-ton AC system (M# 4A7A3036H1000NA, S# 202537GF4F). Upon inspection, diagnosed failed dual-run capacitor in outdoor condensing unit. Capacitor showed visual signs of deterioration and tested out of specification. Replaced defective capacitor with properly rated unit, verified all electrical connections, and restored system to normal operation. Unit cooling properly upon departure.

Responded to emergency service call for ice buildup on air conditioning system filter. Upon arrival, discovered catastrophic water heater failure with severe fire damage and structural compromise to tank top, creating safety hazard in proximity to HVAC equipment. Documented extensive deterioration and charring around failed water heater opening. Assessed residential HVAC system for ice formation on filter as reported, likely caused by restricted airflow or refrigerant issues. Collected all equipment information and photographed damaged water heater and surrounding areas for documentation purposes. Advised customer of water heater safety concerns requiring immediate attention and provided diagnostic assessment of air conditioning system performance.

Completed comprehensive clean and check maintenance on two air conditioning systems per Comfort Plan agreement. Performed standard inspection procedures including temperature differential measurements, verified proper system operation, and documented equipment condition with photos. Inspected furnace door security as requested and confirmed proper closure; noted humidifier equipment present but not currently included in maintenance plan coverage.

Responded to service call for non-functioning air conditioning system with thermostat communication issues. Upon inspection, found significant debris and dust accumulation on evaporator coil fins restricting airflow and system performance. Accessed control panel to diagnose thermostat connectivity and verified wiring connections and circuit board functionality. Documented equipment condition with measurements and photographic evidence. Cleaned evaporator coil to restore proper heat transfer efficiency. Discussed preventative maintenance options with customer to prevent future system failures and reviewed all equipment specifications for service records.

Completed comprehensive clean and check maintenance on single AC system per Comfort Plan agreement in response to inadequate cooling concerns. Inspected outdoor condenser unit, verified proper operation of compressor and fan motor, cleaned coils, and replaced 16x25x1 air filter to restore optimal system performance and airflow.

Performed comprehensive clean and check maintenance on single HVAC system including outdoor condensing unit and indoor air handler components. Inspected outdoor unit positioned in side yard, verified proper airflow through condenser coils and fan operation, checked refrigerant levels and electrical connections. Evaluated basement-mounted air handler, ductwork insulation integrity, and associated piping systems to ensure optimal system performance and efficiency per comfort plan maintenance protocol.