Your geyser has burst, or it’s been dripping for weeks, and now you need to know what a new one will cost. The short answer: in 2026, a like-for-like electric geyser replacement in Johannesburg usually costs somewhere between about R6,000 and R15,000 installed. Published South African price guides this year fall roughly in that range. Where your job lands depends on the size, the brand, and how much of the surrounding plumbing needs replacing.
This guide explains what goes into the price, so you can read a quote properly and spot one that’s too good to be true.
Supa Nova gives free quotations. Call 011 485 1324 for a price on your job.
What makes up the price
A geyser replacement quote has four parts.
1. The geyser itself
The unit is usually the biggest single cost. Prices depend on:
- Capacity. 100 L suits one or two people, 150 L is the standard family size, and 200 L suits larger households or homes with big baths.
- Brand and warranty. Better-known brands cost more but usually carry longer tank warranties.
- Orientation. Horizontal and vertical geysers are priced differently, and you usually have to match what fits in your roof.
- Type. Electric geysers are the cheapest to buy. Gas, solar and heat-pump systems cost much more upfront but less to run.
2. Labour
Labour covers draining and removing the old geyser, getting the new one into the roof, connecting it, and testing it. Access matters: a geyser in a low roof space, or above a ceiling that needs a new trapdoor, takes longer.
3. Fittings and compliance parts
A new geyser has to be installed to SANS 10254, the national standard. That usually means new:
- Pressure control valve
- Temperature and pressure (T&P) safety valve
- Vacuum breakers
- Drip tray and overflow pipe that drain to the outside
- Isolating valve on the cold-water supply
A cheap quote that reuses old valves, or leaves out the drip tray, can fail a compliance check. Old valves also tend to fail within a year on a new geyser.
4. Electrical connection and certificate
The geyser needs an isolator and a proper electrical connection, and the installation must be certified. Because Supa Nova does both plumbing and electrical work, this is part of the same job rather than a second call-out.
Extras that can push the price up
- Damaged ceilings. If the old geyser burst, the ceiling below may need repairs. This is usually separate building work.
- Old pipes. If the copper or galvanised pipes near the geyser are corroded, replacing a section now is cheaper than a second call-out.
- Moving the geyser. Moving it closer to the bathrooms saves water and energy, but adds pipework.
- Disposal. Some quotes include removing the old geyser and some don’t.
Repair or replace?
Not every geyser problem means a new geyser. As a rough guide:
| Problem | Usually |
|---|---|
| No hot water, but no leak | Repair: element or thermostat |
| Earth leakage trips when the geyser heats | Repair: usually the element |
| Water dripping from the overflow outside | Repair: pressure or T&P valve |
| Water leaking from the tank itself | Replace: the tank has failed |
| Rusty hot water and an old geyser | Replace soon |
| Geyser over 10 years old with repeated faults | Usually worth replacing |
A tank that leaks can’t be repaired, because the leak means the inner lining has rusted through.
Why Johannesburg geysers fail early
Johannesburg’s water is hard. When it’s heated, the dissolved minerals form scale on the element and the bottom of the tank. Scale:
- Makes the element run hotter, so it burns out sooner
- Insulates the water from the element, so heating takes longer and costs more
- Traps heat at the bottom of the tank, which speeds up corrosion
The other local factor is pressure. When the water supply returns after an outage, the pressure surge stresses valves and joints.
What helps: servicing the geyser every few years. That means replacing the element and the sacrificial anode, and checking the valves. It costs far less than an early replacement.
Will insurance pay?
Most South African home insurance policies cover a burst geyser, and many also cover the resulting damage. A few points to check:
- Some policies cover the geyser but not the damage it causes, or the other way round.
- Many insurers send their own plumber, or have a preferred-supplier list.
- Insurers usually ask for a plumber’s report and a compliant installation certificate.
- An excess applies.
Call your insurer before the work starts if you plan to claim.
Supa Nova doesn’t work for insurers directly, but we can give you a report and the compliance certificate to support your claim.
How to compare quotes
When you get two or three quotes, check that each one:
- Names the geyser size and brand
- Includes new valves, vacuum breakers, drip tray and overflow
- Includes the electrical connection and the certificate
- States whether disposal of the old geyser is included
- Gives a warranty on the workmanship as well as the geyser
A quote that’s much lower than the others is usually leaving something out.
Cutting the running cost afterwards
Once the new geyser is in:
- Fit a timer so the geyser only heats before you need hot water.
- Set the thermostat to 55 to 60 °C. Hotter wastes electricity and speeds up scaling.
- Insulate the pipes for the first metre or two from the geyser.
- Add a geyser blanket if the geyser is in a cold roof space.
Need a geyser replaced?
Supa Nova replaces geysers across Johannesburg, from Rosebank and Sandton to Bedfordview and Edenvale. We do the plumbing and the electrical connection in one visit. See our geyser replacement service, or call 011 485 1324 or 082 891 1577.