Coil Maintenance Suggestions, How to maintain coils, Coil maintenance procedures

Coil Maintenance suggestions speaks to how to maintain coils and coil maintenance procedures. 

  • This suggested maintenance is for chilled water cooling coils, direct expansion and heating coils. Semi-annually
  • Check P trap. Prime as needed to ensure proper operation.
  • Check for proper operation of cooling or heating coil. Clean, restore or replace as necessary.
  • Coil Maintenance Procedures


  • Check refrigerant system pressures or temperatures. If outside of recommended levels, find cause, repair and adjust refrigerant to achieve optimal operating levels.

  • Check for fouling, corrosion or degradation. Clean or repair as needed.

  • Check integrity of all panels on equipment. Replace fasteners as needed to ensure proper integrity and fit and finish of equipment.

  • Check drain pan, drain line and coil for biological growth. Clean as needed.

  • Check coil fins. Restore if possible. Replace coil if necessary.

  • For cooling coils inspect for evidence of moisture carryover beyond the drain pan from the coil. Make corrections or repairs to eliminate the condition.

  • Visually inspect areas of moisture accumulation for biological growth. If present, clean or disinfect as needed.

  • Check condensate pump. Clean or replace as needed.

    Building Maintenance Checklist

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