• Check the boiler press and temperature settings
  • Check the expansion tank and the boiler feed
  • Check for any signs of leakage
  • Check the condition of the valves and vents
  • Check if the boiler relief valve and the auto-vents are clean and not corroding or deteriorating
  •  Check the wiring condition
  • Check the pumps
  • Check the high limit switch
  • Check the zone valves
  • Examine mixing valve
  • Examine gas manifold pressure
  • Adjust the burners
  • Carbon Monoxide test