Using a licensed and qualified gasfitter for all installation, repairs or renovations involving gas work is imperative. Not all gas workers are qualified to work on all types of gas appliances.

All licensed gasfitters are issued with a Photo ID card that lists the type of work they are eligible to do. All practitioners should carry this ID, and you should request to see this before your gasfitter commences work. 

Your gasfitter should follow the below process when conducting an open-flued gas heater service: 
  • Flue integrity check
  • Ventilation size and clearance check
  • The appliance is assessed for any installation issues, damage or remedial work
    • If there are any signs of overheating,  burn/scorch marks or if the pilot light keeps turning off, then further investigation is to be conducted into these issues. 
  • Conduct a negative pressure test (a smoke test). Your gasfitter will turn on all extraction fans and shut all external doors and windows during this testing phase. Your heater should be turned off and cold before this process is able to be started. 
  • CO spillage testing procedure 

Your gasfitter can now start the servicing work procedure, which may include: 

  • Cleaning the fan, pilot and main burner
  • Cleaning all the dust from the appliance – many gasfitters use a vacuum to do this.  
  • Check the operation of safety switches, including thermocouples and thermostats
  • Check the heat exchanger for metal fatigue and the back wall of inbuilt wall furnaces for signs of heat stress.  
  • Visual test of all parts and replacement if there are signs of fatigue or heat damage
  • Checking/resetting and the appliance’s operating pressure
  • Checking all joints for gas leaks. This includes pilot lights, burners, and gas controls

If your appliance is unsafe, your gasfitter will cut the gas supply to your appliance. This is a legal requirement of the Australian standard (AS NZS 5601). The appliance must be repaired or replaced by a qualified gasfitter.