If you’re looking for ways to pay less on your infinitely-growing electricity bill, you might want to consider replacing the most power-heavy appliance in your home: your electrical geyser. We think that a gas geyser is a hot-n-happening substitute, but how do gas geysers work? 

  1. When the hot water tap is opened, water is drawn into the geyser. The movement of water is detected by a water flow sensor. 
  2. The computer sends a signal to initiate a spark, which is powered by batteries or the home power source.
  3. As the spark is triggered, a gas valve is opened, and the spark ignites a flame inside a safe burning chamber.
  4. The water circulates through a heat exchanger, warming up as it moves
  5. The water exits the geyser through the open valve, to your home where you need it.
  6. When the tap is switched off, the water flow sensor detects this and shuts down the gas geyser unit by terminating the gas supply.
  7. Gas Geysers are equipped with an overheating sensor, which also switches the unit off if the system becomes hotter than what is deemed safe.

Pro’s and Con’s: How Do Gas Geysers Work? 


  • Instant: Enjoy hot water the moment that you open your tap. 
  • Eco-friendly: Gas geysers produce a third of the greenhouse gas emissions than electrical geysers. 
  • Safe: A gas geyser uses LPG gas, which is 100% safe when the geyser is professionally installed. 
  • Cheap: LPG gas and batteries are the only expenses of running your geyser. The unit is cheaper than an electrical geyser, and gas is cheaper than electricity. 
  • Consistent: Gas geysers contain a computer chip that regulates the flow of water, as well as the flow of gas, producing consistent water temperature. 
  • Low maintenance: Modern gas geysers don’t require regular servicing. When the unit does need a check-up, labour and spare parts are affordable


Minimal warning: Your gas geyser relies on two basic resources to function: a spark and gas. When one of these two run out, your shower may run cold with no warning at all. You won’t die, but it will keep you humble.

So… What are you waiting for?

Gas geysers are being used in even the most suburban homes of Johannesburg, as an alternative to traditional electrical geysers. With the energy climate as it currently is in South Africa, the gas geyser may just be the modern caveman’s solution for lower electricity bills and (mostly) consistent hot water. 

Want to find out more? Let us inspect your home to determine how suitable it is for a gas geyser. 

Get in touch with us today!


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