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When to replace your gas heater?

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 When to replace your gas heater?

Even though the weather is slowly warming up around Sydney it’s not quite safe to pack away gas heater just yet. The sun is warming our days but the nights still need a bit of a warming boost.

Your home heating has probably been working hard all winter long to keep the chill from your house. Hopefully, it’s stood up to the pressure, however, if your home has been more frosty than toasty it might be time to replace your gas heater before next winter rolls around.

When to replace your gas heater?

Signs your gas heater is on the way out

Odd gas smells

The indoor unit of your gas heater should not smell like gas. A persistent gas odour or other strong smells could indicate a leak or fault.

Ignition issues

Your heater should ignite or turn on at the press of a button or flick of a switch. If you have to restart the unit repeatedly before it lights properly or stays lit there may be a problem with the flame sensor, thermostat, or ignition board.

Not hot enough

When cranking your heater up to the maximum setting still doesn’t warm the room your heater could have a thermostat or gas flow issues.

Heater gets too hot

Are the walls around the heater getting hot or are you having to open doors and windows even on the low setting to cool the room down? Overheating is a serious issue and should be checked by your gas fitter as soon as possible.

Mould or mildew growth

Poor room ventilation or flue problems can lead to excessive moisture staying in the room rather than being released outside causing mould and mildew growth on walls and ceilings of your home.

Ongoing health issues

A faulty gas heater can be silently affecting your families health through the accumulation of excessive carbon monoxide in the air. Carbon monoxide poisoning can cause frequent flu-like symptoms, chest pain, respiratory irritation, and shortness of breath.

This is a very serious issue and should be checked by your gas fitter immediately. Ensure the room is well ventilated at all times and the gas heater flue is clear.


Your heater was designed to last around 10 to 15 years, maybe even 20 if it has been serviced regularly, less if not. Wear and tear of components, availability of replacements parts and outdated or non-compliant safety systems can mean your gas heater is ready to be replaced with a safe, energy efficient model if it's reaching this age.

Err on the side of caution in every instance when it comes to gas heating. If your heater is suffering from any of the above problems it could be time for an upgrade. Get it checked out by a licenced gas fitter and take advantage of the end of winter heater sales to find a replacement.

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