• Test thermostat-turn on heat
• Visually inspect flue pipe
• Test draft in flue (cold)
• Remove and clean burners
• Remove and clean pilot
• Remove and clean flame sensor
• Remove and clean spark ignitor
• Replace thermocouple (additional cost)
• Test hot surface ignitor – Replace if needed
• (additional cost depending on brand)
• Clean heat exchanger
• Inspect heat exchanger for cracks and stress
• Vacuum burner compartment and exchanger
• Re-assemble unit
• Test for gas leaks at unit
• Inspect filter change if needed (customer provides)
• Inspect blower
• Oil blower motor if needed (customer provides)
• Remove and clean blower if needed
• (time and material extra)
• Inspect and tighten electrical connections
• Start heat
• Watch for smooth ignition
• Test temperature rise
• Adjust to manufacturers rating
• Test draft
• Test carbon monoxide
• Test and inspect safeties
• Turn off thermostat and test for proper off cycling

21 + Boiler Clean & Check

• Inspect thermostat / turn on
• Inspect flue piping – CHIMNEY
• Inspect boiler jacket for signs of combustion gas leaks
• Clean burners
• Clean pilot
• Clean spark ignitor
• Clean flame sensor
• Clean chambers (brush)
• Vacuum out debris
• Replace thermocouple (additional cost)
• Test hot surface ignitor
• Drain standard expansion tank
• Inspect diaphragm expansion tank
• Inspect pressure temp gauge
• Check reducing valve / water feeder
• Check relief valve
• Set proper pressure and refill expansion tank
• Oil pumps and motors
• Start and test unit
• Test draft
• Leak test jacket
• Test ignition
• Check flames
• Test carbon monoxide
• Test limits
• Test controls
• Check pump relays
• Check zone valves
• Check supply and return loops
• Check radiant heat circuits
• Inform owner of any needed repairs