Water Heating

Water heating is generally the highest consumer of energy in homes and businesses. For this reason, Water Heating Solutions are fast becoming the first step for consumers towards conserving energy. Although initial investment is seemingly high, the benefits and payback periods are extremely rewarding.


Sustainable.co.za offers three Water Heating options, namely:-

Solar Water Heating

In South Africa, which is blessed by prevalent sunshine, solar water heating can provide up to 75% of hot water energy needs and significantly reduce electricity bills. Sustainable.co.za has a range of solar heating systems and accessories to meet specific household needs.

Solar Water Heating Equipment


To enjoy the benefits of solar heating, you need to get your home solar ready. Solar heating systems typically consist of 4 components:

  • Solar collectors - evacuated tube or flate plate
  • A reservoir or storage tank otherwise know as a geyser
  • A heat exchange system where required
  • A thermal pump control system

Sustainable.co.za stocks a complete range of solar heating equipment, including solar thermal controllers to help you monitor your solar water heating system and ensure it stays in tip-top shape.

Advantages of solar water heaters

  • Solar energy is free and clean: solar water heaters save you money and reduce your carbon footprint (carbon emissions can be reduced by up to 2000kg's per year per household).
  • Solar water heating systems are perfect for generating hot water where no electrical back up available.
  • Solar heaters are easy to maintain.

Solar water heating: more affordable than you think

A primary concern regarding the installation of solar heating systems is cost. Previously, the costs of solar energy were prohibitively high, but with technological advancements and an increasing awareness of the need to alleviate dependence on commercial energy sources, the average price of a solar heating system has decreased dramatically. Studies have proven that solar heating systems have a payback time of 4-8 years, which may seem like a long time, until you consider what those savings mean to your monthly expenditure. By supplementing your electricity needs with solar heating you can shave up to 40% off your overall monthly electricity bill.

Heat Pumps

Heat pump technology is one of the cutting edge technologies when it comes to renewable energy water heating products. Even though this technology has been used in South Africa for heating water for many decades the recent increase in international demand have brought the component costs down making the product extremely affordable for the residential and commercial users. Using refrigeration cycle to extract energy from the surrounding air (indirectly using solar energy) it can provide you with 60'C hot water day or night, Winter or Summer at a quarter of the cost of electrical geyser element heating.

Domestic Heat Pumps

Heat pumps are designed for low operating noise and can be installed anywhere around the house. Solar water heaters and heat pumps can be used in conjunction with one another creating a hybrid system. Heat pumps use the natural energy in the ambient air and therefore seriously reduce the green house gas emissions associated with the use of electricity.

Industrial Heat Pumps

Industrial heating applications are endless. Anywhere where heat is being generated using either wood, coal, gas or electricity the installation of a heat pump will result in a drastic saving. On existing electrical boilers a heat pump will not only drastically reduce the power consumption but also drastically reduce the peak demand saving you even more and freeing up valuable power capacity.

Swimming Pool Heat Pumps

Pool heating heat pumps are designed to make you get the most enjoyment from your pool. With pool temperatures programmable up to 40 deg Celsius you can now swim all year round. No longer do you need to have your roof covered with solar panels or spend thousands of Rand on electricity. Pool heat pumps are compact, quiet and very simple to install. It will provide you with many years of trouble free pool heating.

The range we offer is known to be a leader in the design and manufacturing of heat pump heating technology and manufactures some of the most efficient systems on the market.

Gas Water Heaters

Sustainable.co.za offers a range of instantaneous gas geysers for domestic application, which are suitable for the immediate supply of hot water to hand-washing basins, kitchen sinks and showers and baths. Gas Geysers also known as Gas Water Heaters also known as Tankless Water Heaters also known as Hot Water On Demand Water Heaters come in liters per minute eg 16 liters per minute = 18ltr/min ( 18 liters per minute ).

Features and Benefits

  • OptiFlow combustion management system
  • 6 star efficiency
  • Compact, lightweight
  • Solar compatible water heater
  • Electronically controlled modulation
  • Up to 3 controllers can be installed

To improve the quality of hot water distribution in gas water heaters, Sustainable.co.za offers a solar kit making them compatible with solar water heating systems. Its function involves maintaining a constant setting for the temperature of the mixed water that is provided for use, when conditions for supplying hot and cold water vary. The Solar Kit allows the water heating system to operate continuously, with hot water temperatures resulting from solar accumulation or from the gas water heater.

Sustainable.co.za’s water heating systems offer affordable quality, enabling you to embark on a money and energy saving mission almost immediately. Order a water heating system from Sustainable.co.za today and enjoy low cost and low maintenance energy for the rest of your life.