includes the following:

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    Check filtration – clean as necessary            
    Check condenser and fan motor amps
    Inspect contractor points
    Check system for proper refrigerant charge
    Lubricate all bearings & motors, where possible
    Check capacitor for proper capacitance
    Check temperature splits across evaporator coil
    Inspect all caps and valves for seals and proper fit
    Check all safety controls
    Check & adjust blower belt if applicable (new belts additional fee)
    Check condenser level
    Check reversing valve operation to ensure that the unit switches between       

summer and winter
    Check & record running and starting amperages
    Check and record suction and discharge pressures
    Visually inspect duct system
    Check air flow
    Inspect blower wheel
    Visually check for leaks at plenum
    Check system for excessive vibration
    Check bearings for wear
    Inspect starting capacitor
    Check thermostat
    Inspect evaporator coil for cleanliness
    Add algaecide treatment to condensate pan & lines
    Provide a written report of performance & recommendations