Gas Geysers & Gas Plumbing Safety

Gas geysers are becoming a more common alternative to electric units in Alberton and the East Rand, mostly because they keep heating water when the power is out. But gas plumbing isn’t the same as electric plumbing, and getting it wrong isn’t a minor issue — it’s a genuine safety risk. Here’s what you actually need to know before installing one.

Why homeowners are switching

A gas geyser heats water on demand, drawing gas rather than electricity, so it keeps working through load shedding without needing an inverter or battery backup sized for hot water. Recovery is also faster than most electric tanks, which matters for larger households running showers back to back. The trade-off is the upfront cost of the unit, the gas installation itself, and an ongoing gas supply — either bottled LPG or, less commonly in residential Alberton properties, a piped supply.

Ventilation is not optional

Gas geysers burn fuel to heat water, and that combustion needs somewhere for the exhaust gases to go. A gas geyser installed indoors or in a poorly ventilated roof space without a proper flue is a carbon monoxide risk, not a hypothetical one — it’s the single biggest reason gas geyser installations need to be done by someone who understands gas-specific ventilation requirements, not just general plumbing. Outdoor or well-flued installations are the norm for exactly this reason.

Gas-safe certification is separate from PIRB

A standard geyser installation in South Africa needs a PIRB (or equivalent) compliance certificate. A gas geyser installation additionally needs gas installation work signed off by someone registered to do gas-safe work — these are two different scopes, and a plumber doing the water-side connection isn’t automatically qualified to certify the gas-side installation unless they hold that registration too. Ask specifically what certification is included before booking the job, not just whether “a certificate” is provided.

Leak detection matters more with gas

A water leak is a nuisance and, eventually, damage. A gas leak is an immediate hazard. Any gas geyser installation should include a proper pressure test on the gas line before it’s signed off, and if you ever smell gas near the unit — that faint rotten-egg smell added to LPG specifically so leaks are noticeable — the geyser should be shut off at the supply and the installer called back immediately, not left “to see if it goes away.”

Bottled LPG vs. piped gas

Most residential gas geyser setups in this area run on bottled LPG, which means budgeting for regular bottle swaps or a refill contract on top of the geyser itself. The bottle storage location also has its own safety requirements — away from ignition sources, on firm level ground, with adequate ventilation around the bottle itself, not just the geyser. A handful of newer developments have piped gas available, which removes the bottle-swapping but isn’t something most Alberton homeowners can simply opt into if the infrastructure isn’t already on the street.

What a proper installation quote should include

• The geyser unit and gas-rated flue/ventilation work
• Gas line installation and a pressure test before sign-off
• Gas-safe certification, separate from any water-side PIRB certificate
• Clear guidance on bottle placement and supply arrangement, if using LPG

If a quote is silent on any of these, ask before booking — a gas installation done properly the first time costs less than one that has to be corrected after the fact, and the margin for error is smaller than with electric geysers.