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Low Pressure Solar Geysers

Last updated: January 28, 2026

Affordable solar geysers that use gravity-fed pressure. Best for simple installations and budget-conscious buyers.

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Quick answer: low pressure is best when budget matters and you can install the tank above the outlets. Low pressure (thermosiphon) solar geysers use gravity to move hot water. They are generally more affordable but require the tank to be installed above the taps and showers it serves.

How Low Pressure Systems Work

Low pressure systems rely on gravity. The hot water tank sits above the outlets so that water flows without mains pressure. This makes installation simpler but limits placement options.

Low pressure systems rely on gravity. The hot water tank sits above the outlets so that water flows without mains pressure. This makes installation simpler but limits placement options.

When to Choose Low Pressure

Low pressure is a good fit when:

  • You want a lower upfront cost
  • You can place the tank above the outlets
  • You do not need strong shower pressure
  • You have a single-storey home
  • You are replacing an existing low pressure system

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Price Disclaimer: Prices shown were verified on . Prices may change without notice. We earn affiliate commissions on qualifying purchases.

All prices are in South African Rand (ZAR) unless otherwise stated. Shipping costs may apply depending on your location.

Related Pages

High PressureSolar Geyser Prices150L Geysers

Low Pressure Solar Geysers FAQs

Yes, for budget installs or simple single-storey setups. They cost less but provide lower pressure. If you want strong shower pressure or have multiple storeys, a high pressure system is usually better.
Solar geysers use roof-mounted collectors to absorb sunlight and heat water. The heated water rises to a storage tank (thermosiphon effect) or is pumped there. On cloudy days, an electric element provides backup heating.
Quality solar geysers last 15-20 years with proper maintenance. The collector tubes may need replacement after 10-15 years. Regular maintenance includes checking the anode rod and flushing sediment annually.

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