Rentek Products

Rentek, in collaboration with Kwikot, provides solar geysers and heat pumps. Our offered solar geysers and heat pumps are manufactured to comply with SANS 1307. SANS 40kPa also have approved our products. 

Heat Pumps

Kwik Pump

Domestic Heat Pump 

Electricity consumption is only used to transfer heat from surrounding environment, such as air. The Heat Pump has the ability to absorb heat (not create heat) and transfer heat by means of a refrigerant, which captures the heat in the ambient air and transfers it to heat water

The fan on the heat pump circulates air through the outer evaporator that acts as a heat collector. the liquid refrigerant in the evaporator absorbs  the available heat in the ambient air, transforming it into refrigerant.  The refrigerant is then pumped into compressor. When this warmed refrigerant is compressed, it intensifies or concentrates the heat, similar to a magnifying glass to the sun

This intensely hot refrigerant is the pumped into a heat exchange condenser where the actual heat transfer takes place.  As the water passes through the heat exchanger , the hot gas gives up its heat to the cooler water. the refrigerant returns to a liquid state and is pumped through an expansion valve and then into an evaporator air coil, which starts the process all over again 

Heat Pump Product Features  
  • Domestic application in households to heat water in electric geyser and solar water heaters.
  • Can be used for other applications where hot water is readily use, such as hairdressing salons and spas
  • Works in all weather conditions and even at night
  • Micro computer controlled with timer function, the heat pump automatically starts up and stops according to the water temperature and temperature settings
  • Super sized evaporator coil  with high efficiency hydrophilic aluminium  fin inner grooved copper pipe, provide higher performance in cold water conditions
  • High efficiency heat exchanger
  • Provides the same amount of hot water at a third of the cost than other water heaters
  • Environmentally friendly, free pollutions thereby reducing global green house effects.   

  • Warranty: 5 years
  • Available sizes: 3.5kw, 5.5kw & 7.0kw 
  • Life span: 15 years
  • Price From: R25 000
  • Water Heater Size:

    • 100/150Lt = 3.5kw
    • 200/250Lt = 5.5kw
    • Up To 450Lt = 7.0kw

Solar Geysers

Kwiksol RetroFit

Direct System 

This particular direct system is used in both frost and frost free locations and where the water quality is good (less than 600ppm Total Dissolved Solids/Minerals.

The direct system is where the water to be used in the household (hot water), circulates through the vacuum tube manifold, transferring solar energy into storage vessel.

Product Features

This solar retrofit conversation direct system, is specifically designed to convert an existing installed Kwikot or any other make or brand of high pressure electric water heater (400kPa or 600kPa working pressure) into a solar geyser system.  This system works on the pump circulating method.

  • Warranty: 5 years
  • Available sizes: 150L & 200L
  • Life span: 15 years
  • Price From: R13 000
  • Number of Solar Collector Panels:

    • 150 = 1 x 2m panel
    • 200 = 1 x 2.5m panel

Kwiksol Solar Water Heater

Direct System

The direct system is used in frost free locations, where the ambient tempreture never falls below 5 degrees and where water quality is good (less than 600ppm Total dissolved Solids/Minerals). The system is used with one or two Solar Collector Panels dependent on size of the tank.

The direct system, can be installed as a split system (pumped or thermosyphoned circulation methods), where the solar water heater is installed inside the roof away from the solar collector panels or installed as a close coupled system, where the solar water heater is installed outside on the roof and above or higher than the solar collector panels.

Solar Water Heater Product Features
  • The Kwikot Kwiksol Solar Water Heater Direct System complies with SANS 1307, is SABS 400kPA approved and can be used as a close coupled system or split system
  • The inner cylinder  is manufactured  from 2mm steel and thermo fused porcelain enamelled for cylinder longevity and hygiene
  • Polyurethane insulation between the inner cylinder and outer casement reduces energy and heat loss
  • 2 x alluminium sacrificial anodes are fitted for corrosion protection
  • The Solar Water Heater is designed for domestic hot water application in conjunction with one or more solar collector panels

  • Warranty: 5 years
  • Available sizes: 150L, 200L & 300L
  • Life span: 15 years
  • Price From: R19 000
  • Number of Solar Collector Panels:

    • 150 = 1 x 2m panel
    • 200 = 1 x 2.5m panel
    • 300 = 2 x 2m panels

  • Rentek approved solar geysers carry a 5 year factory warranty and the SABS mark of approval to indicate compliance to product specifications
  • SANS 1307 & SANS 151
  • In terms of aesthetics if & when possible without compromising maximum efficiency, the tank will be installed in the roof void
  • Rentek will beat any legitimate written quote with comparable products
  • All installations are SANS 10106 compliant

At Rentek we don’t “fit and forget”

We offer you to hassle free system efficiency for the estimated life time of the system and although our systems have been designed to require negligible maintenance, a mandatory periodic check- up, whereby system coefficients like temperature, pressure and flow are regulated is highly recommended to ensure predictable performance.

Register your installation

Complete the form below to register your installation

Contact us:

Head Office Address:

58 Loch Road
Cape Town

Phone Number:021 829 0786

About us

Working in solar heating industry for 20 years, we have established ourselves as a reputable and trusted energy solution provider. Our consultancy is the fastest growing solar water-heating consultancy in Africa. The mechanism, as depicted by its name, is based on use of sunlight energy to heat up water and reduce electricity costs in an environment friendly way.


We are looking for partners in our mission to a more environmentally friendly South Africa. Join us as franchises to work towards this goal while making easy profit on your way