Heating & Cooling Services in Chicago, IL

Performed routine maintenance on commercial HVAC system in elevator room, inspecting wall-mounted unit and verifying thermostat was properly set to auto mode at 60 degrees. Checked and assessed air filters, which were accessible and in serviceable condition. Noted CO exhaust fans are currently undergoing electrical rewiring and will require follow-up inspection once work is completed.

Responded to commercial facility for gas leak on Boiler #4. Located leak at corroded tee fitting on gas supply line. Repaired threaded connection, pressure tested system to verify leak elimination, and restored boiler to safe operating condition. Collected payment for previously invoiced work.

Diagnosed faulty gas valve on Boiler #3 and ordered replacement part through ILLCO with 3-5 day lead time. Recommended keeping boilers off until repair completion to prevent overnight heating cycles and potential overheating issues. Documented existing equipment condition including corroded piping, aged insulation, and burner assembly components for reference upon part arrival and installation.

Replaced defective WiFi wet switch on HVAC system with temporary alternative safety device (condensate overflow switch) to restore proper operation and prevent water damage. System tested and verified functional with all electrical connections secured and operational.

Completed no-charge warranty service on heat pump unit. Per manufacturer tech support guidance, loosened factory-tightened reversing valve mounting bolts to reduce cabinet vibration while maintaining proper zip tie securing of valve assembly. Adjustment prevents excessive vibration transfer to cabinet while ensuring reversing valve remains properly secured and operational.

Completed preventive maintenance clean and check on two heat pump systems and one humidifier per comfort plan agreement. Performed standard inspection procedures including temperature differential measurements at supply registers, verified thermostat operation and calibration, and documented system performance with photos. All equipment operating within normal parameters at time of service.

Responded to service call for water leak concerns related to HVAC system. Upon inspection of attic mechanical space, identified condensation issue on ductwork causing moisture accumulation and mildew growth. Utilized digital measuring instruments to assess humidity levels and temperature differentials on duct surfaces. Documented conditions of affected ductwork panels and surrounding areas with photographic evidence. Inspected interior living space below mechanical area for any visible water damage or staining on walls, ceiling, and carpeted surfaces. Explained findings regarding inadequate duct insulation and condensation formation to property owner. Provided recommendations for duct sealing, insulation upgrades, and moisture remediation to prevent future condensation and mildew issues. Collected all equipment information for service records and discussed preventative maintenance options to address underlying humidity control concerns.

Completed comprehensive warranty work on two-zone HVAC system. First floor: installed powered humidifier with digital thermostat featuring blower control, mounted air scrubber with transformer, installed surge protector on outdoor condenser unit, sealed evaporator coil line set penetration and insulated line set connections to evaporator coil. Second floor: removed existing wireless transmitter/receiver system and replaced with hardwired relay and transformer housed in weatherproof exterior junction box, installed surge protector on condenser unit. Performed system startup, tested all components for proper operation, and provided complimentary air filters.

Completed comprehensive clean and check maintenance service on three Climate Master geothermal heat pump systems as part of annual comfort plan agreement. Performed thorough inspection of all air handlers, replaced air filters, verified thermostat operation and temperature settings, and documented system performance with photos. All three units operating within normal parameters with no issues identified.

Responded to no-charge callback regarding attic unit filter accessibility and excessive vibration concerns on Amana system. Inspected wall-mounted air return vent and successfully accessed filter, which showed heavy dirt accumulation requiring replacement with 20x25x1 filter. Evaluated unit for vibration issues that were reportedly causing sleep disturbance and documented findings with photos for service records.

Completed Gold Clean and Check maintenance service on one heat pump system per comfort plan agreement. Performed comprehensive inspection of indoor air handler unit, verified proper operation of all components, checked refrigerant temperatures with readings at 51.2°F, inspected condensate drainage system and PVC piping connections, and confirmed electrical connections and safety controls are functioning within manufacturer specifications.

Completed Comfort Plan Clean and Check maintenance on heat pump system as part of multi-unit service agreement. Performed comprehensive inspection of electrical components including capacitor testing, verified proper voltage and amperage readings using digital multimeter, and confirmed all connections were secure with proper wire routing. All system components operating within normal parameters with no deficiencies noted.

Completed comprehensive comfort plan maintenance on dual HVAC system, performing clean and check procedures on both air conditioning unit and furnace as requested. Verified system temperatures and airflow at supply registers, documenting supply air temperature reading of 103°F during furnace operation. All maintenance tasks performed during single visit per customer preference for consolidated service.

Completed Comfort Plan Clean and Check on heat pump system at Unit 215, which is the second of four total units serviced under a group maintenance agreement. Performed standard preventive maintenance procedures including system inspection, cleaning, and operational testing. Verified electrical parameters using digital multimeter and measured supply air temperature at 55.2°F, confirming proper cooling operation and system performance within manufacturer specifications.

Completed Comfort Plan Clean and Check maintenance on one heat pump system as part of a multi-unit service agreement. Performed standard preventive maintenance procedures including system inspection, filter replacement, and thermostat verification. All equipment found operating within normal parameters with thermostat displaying proper cooling mode function.

Completed Comfort Plan Clean and Check maintenance on heat pump system at unit #519, the final unit in a four-unit group service. Performed comprehensive inspection of evaporator coil, which showed good condition with clean, densely-packed aluminum fins displaying proper airflow characteristics. Inspected ductwork and attic space components, noting age-appropriate wear on insulated ductwork materials with some accumulated dust and minor wall surface staining in surrounding areas.

Responded to warranty call for reported blue fluid leaking from front of Durastar wall-mounted mini-split unit. Upon arrival, performed thorough inspection of indoor air handler and surrounding area. No active leakage, moisture, or blue fluid residue observed on unit, wall surfaces, or floor below during inspection. Unit operating normally with no visible defects or abnormalities detected. Completed complimentary cleaning and check on mini-split system as requested.

Responded to callback for dehumidifier leaking water into drain pan and not operating properly. Upon inspection of attic-mounted HVAC system, verified condensate drainage issue and assessed PVC drain line routing and connections. Documented equipment installation with photos showing air handler, condensate lines, and associated components for service records.

Completed annual boiler maintenance and tune-up on residential heating system. Inspected and serviced all major components including expansion tank, pressure relief valves, automatic air vents, and associated copper piping throughout the system. Replaced a warranted part as a courtesy to maintain system reliability and customer satisfaction. Observed mineral buildup on brass fittings and corrosion on metal piping components, which were noted for monitoring. System tested and verified operational upon completion.

Performed deep coil cleaning service on two air conditioning systems: a rooftop-mounted unit serving the second floor and a ground-level Carrier condenser serving the first floor. Both units exhibited significant dirt accumulation and debris buildup on exterior grilles and internal coil surfaces. Thoroughly cleaned condenser coils on both systems to restore optimal heat transfer efficiency and airflow, removing weathering deposits and environmental contaminants that had reduced system performance.