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Gas Geysers - Which One To Buy?

DO YOUR HOMEWORK BEFORE BUYING A GAS GEYSER

Gas Geysers are not an ‘off-the-shelf’ type product. There are a number of factors which will influence the type & size of geyser which will best suit your needs and if in doubt at all give us a call on (011) 646 9439 or email penny@giveitgas.co.za

Simply put, there are two types of gas geysers available in South Africa – Standard Gas Geysers and Advanced Gas Geysers.

STANDARD GAS GEYSERS

Brands of Standard Gas Geysers on the South African market include Atlas, Bosch and Kexin. Atlas and Kexin Gas Geysers are manufactured in China, while Bosch Gas Geysers are manufactured in Europe..

Advantages of Standard Gas Geysers:

  • Affordable pricing.
  • Battery operated.
  • Simple to operate and maintain. These gas geysers offer ‘Summer’ and ‘Winter’ temperature controls, and a water inlet control.
  • Standard gas geysers come with a one year warranty, provided they are installed by a qualified and registered gas installer (see our ‘Installations’ page on how to find a qualified gas installer in your area).

Disadvantages of Standard Gas Geysers:

  • Standard gas geysers are not able to effectively supply sufficient hot water to multiple hot taps operating simultaneously. In homes with three or more people and two or more bathrooms, you will ideally need one medium capacity Standard gas geyser per bathroom.
  • Standard geysers have limitations in the distances they are able to supply hot water over. This limit is approx 8m-10m.
  • Standard gas geysers are not recommended for double storey homes, unless the bathrooms & kitchen are all on the ground floor.
  • Standard gas geysers are very sensitive to fluctuating water pressure. This is only a problem in situations where water supply is from a borehole and can be overcome by installing a pressure pump.
  • Standard Gas Geysers will need to be protected from prevailing winds & rain & will need to have a weather cover fitted & flue pipe fitted (extra costs).
  • Standard geysers must have a flue pipe (chimney pipe) with cowl (‘Chinese Hat’ which fits on top of the flue pipe). Without this the geyser will overheat & keep switching off. Flue pipes come at an extra charge.

Recommended Standard Geyser Sizes

Bear in mind that the size & type of geyser you’ll need is also determined by the distances between your bathrooms/ kitchen & whether your home is a single or double storey.

Below is a rough guide of recommended geyser sizes:-

Atlas Geysers

  • 6l geyser – Kitchen sink or basin only
  • 8l geyser – Kitchen sink & washing machine. Can be used for a shower which is not used very often i.e. spare bathroom but does not give a really adequate volume of hot water for daily use. Must use a small showerhead.
  • 10l geyser – Shower.
  • 12l geyser – Minimum size required for a bath.
  • 16l geyser – Bathroom with bath & shower (can supply 2 hot taps simultaneously – showerhead must be small).
  • 20l geyser – Bathroom with bath & shower (can supply 2 hot taps simultaneously – showerhead must be small/ medium size).

Bosch Geysers

  • 11l geyser – Shower (small/ medium showerhead) or basin/ sink
  • 14l geyser – Shower/ Bath & 2x ‘small taps’ like basin or kitchen sink, at the same time.
  • 18l geyser – 2x Showers/ 2x Baths/ 1x Shower & 1x Bath AND 1x ‘small tap’ like basin or kitchen sink, at the same time.

Paloma/ Rinnai Geysers

  • 20l geyser – up to 4x hot taps simultaneously
  • 26l geyser – up to 6x hot taps simultaneously

Gas Efficiency

Larger sizes of standard gas geysers will use more gas than than the smaller sizes of standard gas geysers. This however is balanced out in the fact that the larger geysers will fill a bath faster & therefore will not be operating as long as a smaller geyser.

Generally speaking, the kitchen hot tap is used more frequently than any other in the home &  for this reason it is sometimes more gas & cost effective to install a separate 6l or 8l geyser for the kitchen.

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ADVANCED GAS GEYSERS

Brands of Advanced Gas Geysers available in South Africa are Atlas (Forced Fan), Paloma, Rinnai & Bosch (Thermo – W2 Range). Atlas Forced Fan Geysers are manufactured in China.  Paloma and Rinnai geysers are manufactured in Japan. Bosch Thermo Geysers are manufactured in Europe. All these brands are of a high standard & offer full service back-up in South Africa.

Advantages of Advanced Gas Geysers:

  • Advanced gas geysers are extremely gas efficient
  • Exact water temperature can be pre-programmed.
  • Advanced gas geysers can operate under low water pressure conditions of 1.5 bar.
  • Automatic stabilisation of fluctuating incoming water pressure.
  • Advanced gas geyser electronic systems ensure sufficient water pressure and temperature for up to 6 hot water taps operating simultaneously (depending on which size of Advanced Geyser you use).
  • When installed outdoors, Advanced gas geysers do not require addition protection from wind or rain, & do not require flue pipes (all gas geysers installed indoors must by law be fitted with a flue pipe).
  • Paloma & Rinnai gas geysers have temperature sensors in their water inlet pipes. This allows Advanced Geysers to be connected directly to an existing Solar System, as a back-up for the Solar System.
  • Advanced Geysers are ideal for situations where large volumes of hot water are required. A number of these geysers can be linked up (‘cascaded’), & as the first geyser reaches capacity, the following geyser will automatically switch on. When both are reaching maximum capacity, the third geyser will automatically switch on & so on.
  • Paloma and Rinnai geysers offer a 10 year warranty providing the geyser has been installed by a qualified and registered gas installer (see ‘Need A Gas Installer?’ on our Home Page on how to find a gas qualified installer in your area). Note: 10 year warranty covers the heat exchanger. There is a 3 year warranty on all internal pipes and a 1 year warranty on electronics.
  • Atlas Forced Fan Geysers have a 1 year warranty.
  • Bosch Thermo Geysers have a 3 year warranty.

Disadvantages of Advanced Gas Geysers:

  • Advanced gas geysers cost between two to three times that of a Standard gas geyser.
  • Advanced gas geysers must have an electrical connection (220v) to be able to ignite and to operate their electronic control systems. Lack of electricity during power failures can be overcome either by using a UPS plug or by operating an Inverter or generator at these times.
  •  Advanced gas geysers can be run on generator power, however protection against power surges must be installed as this can damage the geyser’s electronic operating systems.

SERVICING OF GAS GEYSERS

All Advanced Gas Geysers must be serviced at every 6-8 months. This is a simple and quick procedure & is required by the terms of the warranty, as well as by a number of household insurance companies.

Standard Gas Geysers should be serviced at least once a year. Check with your specific Household Insurance Company how frequently they require geysers to be serviced.

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