Specifications include, but are not limited to: •1stQuarterservice is a filter change, audio/visual inspection of the mechanical equipment, adjustment of belts, and drains checked/cleared. •2ndQuarter/Bi-Annualservice is a filter change, audio/visual inspection of the mechanical equipment, adjustment of belts, drains checked/cleared, full check of refrigerant levels, current draws of electrical motors, tightening of electrical connections, and cleaning all outdoor coils. •3rd Quarterservice is a filter change, audio/visual inspection of the mechanical equipment, adjustment of belts, and drains checked/cleared. •4thQuarter/Bi-Annualservice is a filter change, audio/visual inspection of the mechanical equipment, adjustment of belts, drains checked/cleared, full check of heating system, current draws of electrical motors, tightening of electrical connections, clearing the heater and cleaning all indoor coils.