Package Unit Maintenance & Tune-Ups in Jacksonville, NC

We arrive and start with a complete visual walkthrough of your unit—checking the outdoor cabinet for corrosion or damage, examining refrigerant lines for kinks or leaks, and inspecting electrical connections for burn marks or loose terminals. Coastal environments like Jacksonville present unique challenges (salt spray accelerates corrosion), so we know exactly what to look for in your climate.

We listen carefully for unusual noises and note any odors that might signal problems—a burning smell, musty odor, or refrigerant hiss tells us where to focus. This initial inspection often reveals wear patterns or emerging issues that need attention before they become serious failures.

• Outdoor unit visual inspection for rust, corrosion, physical damage, or wind-blown debris
• Refrigerant line integrity check, insulation condition, and secure fastening verification
• Electrical connection tightness and visual inspection for burn marks or discoloration
• Fan blade cleanliness and bearing operation check (listening for grinding or squealing)
• Control board and thermostat wiring visual assessment for loose connections
• Filter condition and ductwork visible-section inspection for blockage or damage

Clean coils are essential for efficient operation—dirty coils reduce airflow, force your compressor to work harder, and drive energy costs up year after year. We carefully clean the outdoor condenser coil with specialized equipment, removing dirt, leaves, mold, and salt spray residue (common in coastal NC where humidity and saltwater air accelerate buildup).

We also clean or replace your indoor air filter, check the condensate drain line for algae blockage, and lubricate fan motor bearings if needed. This step alone often restores several points of efficiency and noticeably improves comfort. Clean coils mean better airflow, cooler supply air, lower energy bills, and a system that runs cooler and more reliably.

• Outdoor condenser coil cleaning with pressure washer and fin-comb to straighten bent fins
• Indoor air filter inspection, cleaning, or replacement (filters accumulate dust monthly)
• Condensate drain pan flushing and algae treatment (algae blocks drainage quickly)
• Fan motor bearing lubrication on units requiring it (reduces friction, extends life)
• Ductwork visible-section cleaning if debris or mold is evident
• Optional protective coating application for coastal systems (extends exterior component life)

Refrigerant is the lifeblood of your cooling system. We measure refrigerant pressures on both the high side (condenser) and low side (evaporator), calculate superheat and subcooling, and compare results meticulously to manufacturer specifications for your exact unit and outdoor temperature.

If pressure is low—which often signals a slow leak—we test for the leak location with dye tracing and can repair small leaks on the spot (usually a loose fitting or corroded solder joint that’s easy to fix). If the charge is correct and no leak is present, your system is good until the next visit.

Low refrigerant is one of the most common reasons systems lose cooling, and it’s one of the easiest problems to catch during maintenance before it cascades into compressor failure.

• High-side and low-side refrigerant pressure measurement (with ambient temperature correction)
• Superheat and subcooling calculation (tells us coil efficiency and charge accuracy)
• Refrigerant leak detection using dye tracing if pressure is low
• Refrigerant recovery and recharge (if needed, EPA-compliant with proper documentation)
• Manufacturer-spec verification documented on service report for your records
• Compressor amp draw measurement to assess compressor electrical health and efficiency

We test all electrical connections for safe voltage and continuity, verify that safety switches are operating properly, and confirm that the thermostat sends correct signals to the control board. This step catches failing capacitors, weak contactors, and control board issues before they cause a breakdown.

• Electrical voltage testing at main disconnect and circuit connections
• Contactor and relay operation verification
• Capacitor condition testing (a common failure point in older units)
• Thermostat calibration and signal testing
• Safety switch functionality (low-pressure cutout, high-pressure cutout)
• Control board relay clicks and response time

Finally, we run your system through heating and cooling cycles, measuring actual output temperatures, comparing them to design specs, verifying steady operation, and confirming that comfort is maintained. We document all findings, explain what we found, answer your questions, and discuss any upcoming maintenance or repair needs.

• System startup and steady-state operation verification
• Temperature rise/drop across the coil (heating and cooling modes)
• System cycling time and frequency (should be normal, not short-cycling)
• Ductwork airflow balance across rooms
• Thermostat cycling and comfort verification
• Full service report with findings, warranty status, and next visit recommendation