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Clean coil fins to keep refrigerant pressure normal.
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Check accessible evaporator coils.
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Check blower fins for cleanliness because dirt can cause longer operating time and increased costs.
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Inspect belts and pulleys and adjust as needed.
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Check thermostat for proper calibration.
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Lubricate motor and bearings because friction can cause these parts to seize and fail.
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Inspection of unit motor to ensure optimal efficiency.
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Check safety controls to avoid property damage or health problems.
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Check condensate drain which is a common cause of water damage to your property.
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Check crankcase heater to avoid compressor failure.
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Inspection of the unit disconnect for evidence of overheating and wear.
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Record temperatures and pressures of the unit to address problems that can cause changes in this data.
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Inspect wiring and connections and tighten as needed.
