Our Web Store will continue to operate and any new online orders that are placed from Wednesday, 25 March 2020 will regrettably only be delivered after the lockdown period. Our staff will be operating remotely and we will still be offering free, professional advice. Although we will do all in our power to operate as "normal" during these extraordinary times, we are fully committed to supporting the lockdown. We encourage all to practice the spirit of Ubuntu and stand together as a united nation and help each other combat the spread by keeping yourselves, your families and friends safe and healthy during this time. Thank you for your continued support, our team and the planet appreciate it!

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Solar Circulating Pumps

Solar Circulating Pumps

Solar circulating pumps ensure that residential and commercial water heating systems always have a ready supply of hot water, there is no waiting for hot water to reach the faucet as it circulates continuously around the pipes. An essential component of every solar hot water heating system. If you have any questions, please do not hesitate to Contact Us. The products listed below are individual components; why not check out our fully functional Solar Water Heating Kits.


Solar Circulating Pumps

In hydronic systems – that use water to transfer heat – most circulator pumps are centrifugal, which means that they the rotation of the axes is transformed into power. In solar circulating systems, the original source of power to turn the axis of a centrifugal pump comes from the sun.


Generally, the material used to manufacture circulating pumps depends on the system; closed loops that don’t receive fresh water regularly are made of cast iron components to protect the pipes from corrosion caused by deoxygenated water. Bronze is typically used to make the pipes in circulating pump systems that receive a fresh supply of oxygenated, potable water.


Solar circulating pumps ensure that residential and commercial water heating systems always have a ready supply of hot water, there is no waiting for hot water to reach the faucet as it circulates continuously around the pipes. This saves energy in that you don’t have to leave the tap running as you wait, it also saves water. However, the fact that the pipes are constantly hot results in energy loss, while the pump itself consumes energy.


As suppliers and distributors of high quality circulating pumps, Sustainable also offers solutions to these latent energy wasters. For instance, manual or automatic thermostats can be used to regulate the temperature on your circulating pump, and also to set operation times – a few hours before you get up in the mornings and before you come from work. We also supply piping insulation from the most reputable manufacturers to lock in heat and prevent energy wastage from all solar circulating pumps and water heating systems.


Contact Sustainable.co.za for a range of energy efficient submersible and centrifugal solar circulating pumps to provide all your household’s hot water needs.


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