As temperatures drop, gas heaters come out of storage and into daily use across Cape Town homes and offices. But before firing yours up for the winter, it’s worth asking: is your heater actually safe to use?
Gas heating is efficient and effective—but only when the system is in good condition and properly maintained. A neglected indoor gas heater or portable gas heater can put your household at risk, especially in enclosed spaces where ventilation is limited.
Whether your system is permanently installed or freestanding, winter is the most important time to ensure your heater is safe, compliant, and functioning correctly.
Most people assume their gas heater is safe if it still switches on—but that’s not always the case. Gas appliances, especially those used indoors, can pose serious risks when they’re damaged, poorly maintained, or incorrectly installed.
One of the biggest dangers associated with indoor gas heaters is the risk of carbon monoxide buildup. This colourless, odourless gas can accumulate silently in spaces that aren’t ventilated well, leading to symptoms like headaches, dizziness, and nausea—and in severe cases, it can be fatal. Portable heaters used in small or sealed rooms without fresh airflow are particularly risky.
Flexible hoses, regulators, and fittings can crack or loosen over time, especially when a portable gas heater is moved or stored away during warmer months. Leaking gas not only wastes fuel—it can cause fires or explosions if left unchecked.
Dust that settles on the burner or inside the heater can ignite when the unit is switched on, and clutter around the unit—like curtains, rugs, or furniture—can catch fire if they’re too close to the open flame. These risks are often overlooked until it’s too late.
If your gas heater hasn’t been inspected or used in a while, don’t assume it’s safe just because it worked last winter. Even subtle faults can become dangerous over time.
Before turning your gas heater on for the season, a few essential checks can make all the difference between a warm home and a serious safety hazard. Whether you’re using a portable gas heater or a fixed indoor gas heater, these are the basics you should cover:
Examine all hoses for cracks, brittleness, or signs of wear. The rubber hardens over time and can leak gas if compromised. Make sure the regulator is fitted securely and isn’t rusted or damaged. If it’s been a year or more since these parts were replaced, it may be time.
Use a soapy water solution on all visible connections—if bubbles form when the gas is turned on, there’s a leak. Never ignore a faint gas smell. If in doubt, turn off the gas immediately and don’t use the heater until it’s been inspected by a registered professional.
Dust, pet hair, and debris can collect inside the heater during storage. Clean the burner area and make sure air vents are open and unobstructed. A blocked flame port can cause incomplete combustion, leading to carbon monoxide production.
The first test of the season should always be done in a ventilated space, with windows or doors open. Watch for irregular flames—yellow or flickering flames are signs of incomplete combustion and should be investigated.
If anything looks or smells off—or if you're unsure when last your system was checked—it’s best to get a certified gas installer to inspect the unit. They can check for hidden faults, secure loose fittings, and make sure the system meets current safety standards.
Understanding when a Gas Installation Certificate of Compliance (CoC) is legally required is an important part of using gas appliances responsibly in South Africa—especially during the colder months.
Portable gas heaters, such as standalone indoor or outdoor units, are not classified as permanent installations. Because they’re not plumbed directly into the building’s gas line, a CoC is not legally required for their use.
That said, these appliances still carry risk—especially if they’re old, stored improperly, or used in poorly ventilated spaces. Even without the legal requirement, having a registered gas installer inspect your portable heater is a smart move. It’s a practical way to make sure all fittings, hoses, and regulators are safe to use, and can help prevent leaks or dangerous combustion.
By contrast, any fixed gas heater that is permanently connected to a gas supply (like a wall-mounted heater or built-in fireplace) does require a valid Certificate of Compliance. The CoC confirms that the installation was completed by a qualified professional gas installer and meets all relevant safety standards under the South African National Standards (SANS) and Pressure Equipment Regulations.
Failing to obtain a CoC for a fixed heater installation is not only a legal risk—it can also void insurance claims in the event of fire or property damage.
Even where it’s not mandated, getting a professional opinion on your gas heating system can make a major difference. A qualified installer can spot issues you may not notice, ensure everything is fitted correctly, and give you the confidence that your heater is ready for winter.
Gas heaters are a reliable way to stay warm through winter, but they come with responsibilities. Whether you’re using a portable gas heater or a fixed installation, safety comes down to two things: regular checks and professional oversight when needed.
If your heater hasn’t been inspected in a while—or if you’ve made changes to your gas setup—now’s the time to act.
The Gas Works offers expert advice, inspections, and certified gas installations across Cape Town. If you’re unsure about the condition of your heater or need a gas installation certificate of compliance, our team is ready to help.
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