Quick answer
A compliant geyser replacement in Johannesburg ranges from about R7,500 to R14,000, and the spread is driven by size, brand, how accessible the geyser is, and how much compliance work the old installation is missing. A roof-space replacement costs more than a cupboard one for the same cylinder. The quote should be itemised, because the difference between a cheap and a fair price is usually the parts a cheap quote leaves out.
Common causes
- Roof-space and confined installations cost more in labour than accessible cupboard installs
- Compliance upgrades on older installations — drip tray, vacuum breakers, isolator, correct valves
- Larger capacity carries a real price step, 150L to 200L to 250L
- Brand and warranty length, with longer-warranty cylinders costing more up front
- Electrical work if the existing circuit or isolator does not meet current requirements
- Whether a Plumbing COC is included in the price or billed separately
What you can do now
- 1Get a written quote that itemises the geyser, brackets, valves, drip tray, isolator, electrical work and the COC
- 2Check the geyser spec plate for current capacity so you are comparing like with like
- 3Ask what warranty applies to the cylinder and what applies to the labour — they are usually different
- 4Confirm in writing that a Plumbing COC is included
- 5Ask whether the quote assumes the existing drip tray and valves are reusable, and what happens if they are not
When to call a professional
Get the itemised quote before work starts, and be wary of any price that does not mention the drip tray, vacuum breakers, safety valve, isolator and COC — those are the items that turn a cheap quote into an expensive one once the plumber is on the roof. A registered plumber will confirm SANS 10254 compliance and issue the COC as part of the job.
Typical cost in Johannesburg
R7,500–R14,000 typical replacement
Indicative ranges only. We provide written, itemised quotes before any work.
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