Central Air Conditioning Maintenance & Tune-Up in Worth, IL

We arrive with our inspection checklist and diagnostic tools. We visually inspect the outdoor condenser unit, indoor air handler, ductwork, and thermostat. We measure refrigerant pressure, temperature differential across the evaporator coil, and electrical current draw to verify the system is operating within manufacturer specifications. We listen for unusual noises and check for visible leaks or corrosion before touching a single component. This baseline assessment is what every later recommendation is measured against.

• Measure refrigerant pressure and temperature at service ports
• Test electrical components: capacitor, contactor, and motor terminals
• Verify thermostat calibration and response time
• Inspect condenser coil for dirt, debris, and corrosion
• Check indoor air handler and blower operation
• Inspect ductwork for leaks and proper connections

A dirty evaporator coil or condenser coil reduces heat transfer and cooling efficiency dramatically, sometimes cutting capacity by a noticeable margin. We clean both coils—the indoor evaporator with a safe chemical cleaner and the outdoor condenser with pressurized water and a soft brush. Clean coils restore cooling power and lower energy consumption. We also inspect and replace the system filter if needed.

• Clean indoor evaporator coil chemically and mechanically
• Rinse and inspect outdoor condenser coil thoroughly
• Remove leaves, debris, and dirt buildup from the cabinet
• Replace or clean system filter as needed
• Inspect blower wheel for dust accumulation and imbalance

Refrigerant charge must be exact—not too high, not too low. We verify refrigerant pressure against the nameplate OEM spec and measure temperature drop across the evaporator to confirm proper operation. If charge is low, we investigate for leaks (the cause of low refrigerant), repair the leak if found, and recharge to specification. We test all electrical circuits for proper voltage and amperage under load, since a weak component here often fails later in the season.

• Verify refrigerant charge matches OEM specifications
• Test superheat and subcooling for proper operation
• Inspect refrigerant lines for leaks, corrosion, or damage
• Test capacitor for proper microfarads rating
• Test compressor operation under full load
• Verify electrical supply voltage to all components

Some motors have oil ports that require seasonal lubrication. We apply manufacturer-recommended lubricant to extend motor life and reduce bearing wear. We inspect bearings, belts (if present), and mechanical fasteners for wear and tighten any loose connections. We check ductwork for air leaks and recommend sealing if significant leakage is found during the visit.

• Lubricate blower motor and condenser fan motor bearings
• Tighten electrical connections and fasteners throughout the unit
• Inspect for corrosion or rust on cabinet and pipes
• Test all moving parts for smooth, quiet operation
• Recommend ductwork sealing or insulation upgrades if needed

Before we leave, we provide a written maintenance report showing every inspection result, what was cleaned or adjusted, and recommendations for any issues found. If repairs are needed, we explain priorities and provide a written estimate so you can decide how to proceed. We discuss filter replacement schedules and seasonal adjustments. Maintenance plan members receive priority booking for the following year's visit.

• Provide itemized service report with all test results and readings
• Explain any findings in clear, plain language—not jargon
• Recommend a filter replacement schedule suited to your home
• Discuss upcoming repair needs or minor adjustments found
• Schedule next year's maintenance visit before we leave
• Answer all questions about system operation and efficiency