Gas Heater Service and Repairs.Done Right.

Why service a gas heater

A gas heater burns fuel and sends exhaust gases out through a flue. A blocked flue, a dirty burner or a cracked heat exchanger can release carbon monoxide, a gas you cannot see or smell. A service checks the parts that matter for safe burning, and catches faults before the cold weather arrives.

What a service covers

A service normally includes checking the burner and flame, the flue and its outlet, ventilation, the heat exchanger where it can be seen, the pilot or ignition, the thermostat and safety devices, and the gas connections for leaks. Ask your gasfitter what their service includes for your type of heater, and keep the written record.

Carbon monoxide and warning signs

Headaches, nausea, drowsiness or feeling unwell while a heater is running, or when several people in the house feel the same, can signal carbon monoxide. Turn the heater off, get fresh air and seek medical help. Yellow or orange flames, soot or staining around the heater, and a heater that will not stay lit are also reasons to stop using it until it is checked.

Ducted, flued and portable heaters

A ducted heater sends warm air through the house and has a flue to the outside. A flued room heater vents its exhaust outdoors. An unflued portable heater releases combustion gases into the room, so ventilation matters a great deal. Each has different risks and service needs, so tell your gasfitter which kind you have.

Flame, pilot and ignition faults

A heater that will not light, lights then goes out, or clicks without firing may have a faulty thermocouple, ignition lead, gas valve or sensor. Some faults are simple and cheap. Others point to an ageing heater. Ask what has failed, what the repair involves and whether it is worth repairing.

Thermostats, fans and controls

A heater that cycles on and off, blows cold air, rattles or makes a loud fan noise may have a thermostat, fan or control board fault. These parts can be hard to find for older models. Ask whether parts are available before agreeing to a repair.

Replacing an old heater

If the heater is old, keeps failing, or parts cannot be found, replacement may be better. Ask a licensed gasfitter about like-for-like gas heaters and about electric options such as reverse-cycle air conditioning. Victorian rules for new gas connections have been changing, so check current government information for your property.

Booking before winter and how often to service

Servicing is busiest as the weather cools, so book early. Many makers recommend servicing about every two years, and some say yearly. Follow your heater's manual, and if you rent, tell your agent or landlord when a service is due, since gas safety checks in rentals have their own rules.

Questions people ask about gas heater service

How often should a gas heater be serviced?

Follow the manual for your model. Some makers say every two years, others say every year. A heater that has not been serviced for a long time is worth checking before winter.

Is a yellow flame a problem?

A healthy gas flame is mostly blue. Yellow or orange flames can mean poor combustion, so turn the heater off and have it checked.

Can I service a gas heater myself?

No. Gas work is licensed work, and removing covers can be unsafe. You can vacuum around vents and keep the area clear.

Is an unflued heater safe?

Unflued heaters put combustion gases into the room. Use them only as the maker instructs, keep the room ventilated and avoid them in bedrooms.

When should I replace the heater?

When it is old, repairs keep recurring, parts are unavailable or it fails a safety check. Ask about gas and electric alternatives.

Gas safety in rental properties

Rental providers in Victoria have duties about gas safety, including gas appliance checks, and renters can report a gas fault as an urgent repair when it is a gas leak or the failure of an essential service. Consumer Affairs Victoria publishes the current rules on its gas and electrical safety page. If you rent, report faults in writing and do not use a heater you think is unsafe.

What to expect at a heater service

The gasfitter checks that the heater lights properly, the flame colour, the flue and ventilation, the safety devices, the thermostat and the gas connections for leaks. They tell you what passed, what failed and whether a repair or replacement is better. Keep the record, since insurers and agents may ask for it.

Signs your heater needs attention now

A yellow or orange flame, soot marks, a smell, a pilot that will not stay lit, or a heater that cycles on and off needs a check. Stop using it if you suspect a fault.

Carbon monoxide has no smell. Make sure the room is ventilated, and see a gasfitter if anyone has headaches or nausea when the heater is on.

Repair or replace a gas heater

Older heaters may lack newer safety features and have parts that are hard to find. Compare the repair cost with the heater's age, efficiency and safety. Ask for both options in writing.

If you rent, ask your rental provider to decide on replacement.

Choosing a heater type and what a service record shows

Gas heaters include flued units, room heaters, and ducted systems. Each has different service points. A service record shows what was checked, what was cleaned or replaced, and any faults noted. Keep the record with the heater's manual.

If you are buying a house, ask for service records on gas appliances. If there are none, a service gives you a baseline.

Guides worth reading

• Gas Appliance Safety Tips for Victorian Homes
• Winter Plumbing Checklist for Geelong and Melbourne

Related plumbing services

• Hot Water Systems: Hot water repairs and replacement for gas, electric, heat pump and solar systems.
• Gas Hot Water Systems: Gas storage and continuous flow hot water systems repaired, serviced and installed.
• Electric Hot Water Systems: Electric storage hot water repaired and replaced, including element and thermostat faults.
• Heat Pump Hot Water: Heat pump hot water installation and plumbing for lower running costs.
• Emergency plumbing is available 24 hours a day, 7 days a week

Talk to GSA Plumbing Services

Call 0401 041 103 or send an enquiry on the contact page. We work across Geelong, Melbourne and surrounding suburbs.