What a proper geyser installation involves — choosing the right unit, the compliance certificates required, and how to avoid the common installation shortcuts that cost you later.
Registered plumbers and electricians install and replace electric, solar, heat pump, and gas geysers — sized correctly, fitted to compliance standards, and certified with the plumbing and electrical Certificates of Compliance the job legally requires.
A geyser installation is the single most consequential plumbing job in most homes: a 150-litre tank holds enough water to destroy ceilings, flooring, and electronics when it fails, and the installation involves both pressurised water and live electrical connections. Whether you are replacing a burst geyser under time pressure or upgrading to a more efficient system, a compliant installation by registered tradespeople is what stands between you and an expensive — or dangerous — failure down the line.
For a full breakdown of prices by geyser type and size, see our Geyser Replacement Cost Guide. This page explains what the installation itself involves and why it has to be done properly.
The right geyser depends on your household size, hot water habits, roof space, and budget. The four common types each suit different homes:
A proper installation is far more than swapping the unit. The shortcuts cheap quotes leave out are exactly the items that fail a Certificate of Compliance inspection — and the items that cause ceiling floods. A full installation includes:
Geyser work sits across two regulated trades, and both certificates are legally required. A registered plumber handles the water connections, drip tray, overflow piping, and issues the Plumbing Certificate of Compliance. A registered electrician handles the wiring, isolator, and earthing, and issues the Electrical Certificate of Compliance. Without both, your home insurance can be voided after a geyser-related claim, and you cannot legally transfer the property when you sell. Some installers coordinate both trades for you — always confirm when getting your quote.
"The biggest mistake homeowners make is comparing geyser quotes that don't include the same scope. One quote is the unit only; another includes the unit, drip tray, overflow pipe, P&T valve, pipe insulation, labour, and both COCs. Always get an itemised quote and compare like for like."
If your geyser is over 10 years old, has burst, or a repair would cost more than half the price of a new unit, replacement is the better investment. If it is under eight years old with a sound tank and an isolated fault — a failed element, thermostat, or valve — a repair usually makes more sense. Our cost guide walks through the full repair-versus-replace framework and current prices.
Fonster connects homeowners across the Western Cape with registered plumbers and electricians who install and replace geysers to compliance standards. You describe the job, receive a quote from a qualified installer in your area, approve the price before any work begins, and receive both Certificates of Compliance on completion. Emergency call-out is available for burst geysers.
Fonster connects homeowners with geyser installers throughout the Western Cape: