By taking advantage of KTC's Preventive Maintenance program, not only will you save money on your monthly utility bills, but you will be extending the life of your system as well.  Preventive Maintenance agreements ensure that your system is running efficiently and smoothly, and we have agreements for both residential and commercial properties.

Call us today discuss your heating and cooling maintenance needs at
443-845-6468 or 443-829-2744.

Our PM customers enjoy the benefits of:
Priority Scheduling of Appointments
Discounts on Multiple Systems
Discounts on Repairs and Replacements of Parts and Equipment

Listed below are the services that are included in the Preventive Maintenance agreement:


  • Indoor coil inspection
  • Outdoor coil inspection
  • System refrigerant charge adjustment (up to 2lbs)
  • Condensate drain flush and pump cleaning
  • Air filter change
  • System voltage and amperage check
  • Lubrication of motors and bearings
  • Inspection of controls
  • Tightening of electrical connections and inspections of wiring


  • Adjustment of fuel supply and manifold pressure
  • Combustion test
  • Heat exchanger inspection
  • Vent connector inspection
  • Cleaning of flame sensors
  • Inspection of controls
  • Lubrication of motor bearings
  • Check operation of safety controls