Gas Geyser Installation
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Gas geyser installation prices in South Africa
| Geyser size | Ballpark installed (2026) |
|---|---|
| 6 L/min, basin or one shower | R3 500 – R5 500 |
| 8–10 L/min, one shower | R5 000 – R7 500 |
| 12 L/min, most popular | R5 500 – R9 000 |
| 16 L/min, two showers | R6 800 – R11 500 |
| 20 L/min, larger home | R7 500 – R13 500 |
| 24–26 L/min fan-forced | R11 500 – R16 000 |
| Premium imported 20 L/min, outdoor | R13 600 – R15 700 |
| New gas pipe kit, up to 5 m | From ±R3 450 |
Get an accurate quote. Check that the flue, certificate and cylinders are listed. Ask whether VAT is included.
Benodig jy 'n gasgeiser-installasie? Kry tot 5 gratis kwotasies van installeerders met 5-ster-resensies regoor Suid-Afrika.
What pushes the price of gas geyser installation up
- Fan-forced or premium imported units, from about R11 500 installed
- A new gas line, longer pipe runs or wider-bore pipe
- Indoor flue routing and permanent ventilation work
Types of gas geyser installation
| Type | Best for | Keep in mind |
|---|---|---|
| Outdoor open-flue (Type D) | Houses with a suitable outside wall | Rain-exposed walls need a cover |
| Indoor flued (Type B) | Homes with no outdoor wall space | Needs flue and permanent ventilation |
| Fan-forced | Larger homes with several outlets | Needs a 220 V plug point |
| Low-pressure eco-flow | Gravity-fed or tank-fed water supply | Serves one outlet at a time |
| Battery-ignition single-use | Hot water with no mains power | Check it suits your water pressure |
| Premium imported units | Bigger homes wanting longer warranty | Ask if the brand flue is included |
Gas geyser installation materials and specs compared
| Material | Strengths | Watch out for |
|---|---|---|
| Copper heat exchanger | 10-year residential warranty on premium units | Commercial use drops cover to 1 year |
| Budget and generic units | Low entry price, from about R3 000 installed | Often 1-year warranty, shorter lifespan |
| Gas pipe kit | Kits cover a single cylinder up to 5 m | Fan-forced units need wider-bore pipe |
| Flue pipe | Required indoors, sometimes included in unit price | Check it appears in your quote |
| Weather box | Shields outdoor units from rain | Sold separately for some models |
| Regulator and rubber parts | Regulator lasts 10 years, rubber 5 | Old parts must be replaced first |
Sizing by flow rate
- Gas geysers are sized in litres per minute, not tank litres.
- Do a bucket test on your showerhead and taps first.
- Count outlets that run together, not the number of bathrooms.
- Two showers at once usually points to a 16 L/min unit.
Power and water pressure
- Fan-forced models need a 220 V plug point nearby.
- Some units draw only about 45 watts, so a small inverter can run them.
- Battery-ignition models need no mains power at all.
- Low-pressure eco-flow models suit gravity-fed or tank-fed water.
Position, flue and gas supply
- Keep the unit 30 cm clear of anything combustible.
- Mount it where you can reach it without a ladder.
- Confirm the unit is an LPG or a natural gas model.
- Higher-flow units may need wider gas pipe than a hob line.
Approval for gas geyser installation
- By law, a registered gas practitioner must fit, test and certify the geyser.
- The work follows SANS 10087-1 and the Pressure Equipment Regulations under the OHS Act.
- Ask your municipality's building control about flue holes; complexes also need body corporate consent.
Gas geyser installation services
| Service | What to ask for |
|---|---|
| New gas geyser fitting | Unit, flue, pipe and certificate priced separately |
| Electric geyser to gas swap | Old tank removal and water pipe changes included? |
| Outdoor geyser with weather box | Wall position, bracket and rain cover |
| Indoor flued geyser | Flue route, air vents and carbon monoxide safety |
| Gas geyser replacement | Reuse of existing gas and water points |
| Gas geyser service | Burner clean and safety test price |
Practical gas geyser installation tips
- A 12 L/min unit runs about R400 – R700 a month.
- Budget half a day on site for a standard fitting.
- A yearly service costs about R700 – R1 200.
- Some premium brands service every 2 years, with a major service at 5.
- Aim for water pressure of at least 100 kPa.
- Keep your certificate, since budget-brand warranties can depend on a qualified installer.
What to send with your request
- Photo of current geyser
- Photo of planned wall spot
- Number of showers and taps
- LPG or natural gas
- Cylinder position, if any
You choose which quote to accept. Installers are independent businesses, and leaderr costs you nothing.
Frequently asked questions
How much does a gas geyser installation cost?
A 12 L/min unit typically costs R5 500 – R9 000 installed. Large 20 L/min units reach R13 500.
What warranty does a gas geyser carry?
Premium imported units often carry 10 years on the copper heat exchanger. Budget brands commonly give 1 year if a qualified installer fits them.
Do I need a certificate for a new gas geyser?
Yes. A registered installer tests the work and issues a certificate of compliance, which insurers can ask for after a gas fault.
Is a gas geyser cheaper than an electric one?
It costs more upfront but less monthly, about R400 – R700 against R800 – R1 000. You also get hot water with no reheat wait.
Which gas geyser size suits two showers at once?
A 16 L/min unit usually covers two standard showers. Go to 20 L/min if you have high-flow heads or fill a bath.
Hoeveel kos gasgeiser-installasie?
Reken op vanaf ±R5 000 vir 'n 8–10 L/min-eenheid tot ±R16 000 vir 'n 24–26 L/min-ventilatorgeiser, geïnstalleer. Kry tot 5 kwotasies en kies self die beste aanbod.
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