Welcome

KZN Solar has been operating in the Kwa Zulu Natal area since 2007.  We have completed over 3000 Solar Geyser and Heat Pump installations, and around 8000 low pressure Solar Geyser installations.
We have established relationships with some of the biggest solar suppliers in Durban and strive to offer the best service possible. 
The Solar Geysers and Collectors we supply come with a 5 year suppliers warranty.
We install Geyserwise control units with all of our systems.
We offer free, no obligation quotes in the Greater Durban area. 

 

Solar systems

CAN A SOLAR GEYSER SAVE ME MONEY?
Installing a Solar Geyser can save 30 - 40% of your electrical bill. Energy from the sun is used to heat the water which you can then use in your home.  This means that the amount of time you use the electrical element of the geyser is minimised, thereby saving money. Solar Collectors can be retrofitted to any High Pressure geyser.

HOW DOES THE SOLAR GEYSER WORK?
We make use of collectors, in the form of flat plates or Evacuated Tube collectors (EVT) to trap and transfer the solar radiation into heat, which is in turn transferred to the water in the geyser.
Flate plate collectors provide the best solar solution for the Coastal regions, which are free from frost and harsh weather.  EVT’s are more suited to inland areas where temperatures drop below 5 degrees celsius.
The system works on a thermosyphon principal. This merely means that cold water sinks and hot water rises within the closed system. There is a change in water densities with varying temperatures. Cold Water entering the system is pushed down to the bottom of the panel. As the heat transfers to the water, the water rises up the panel due to the thermosphysphon principal and back to the Solar Tank. This cycle continues through the entire day while solar energy is available. Once night falls no more heat transfer occurs and the cold water remains in the panel, locking the hot water safety in the Solar Tank.

WHAT HAPPENS IF IT RAINS?
We make use of a Geyserwise Controller which is set on a timer to activate the electrical element of the geyser. You can manually activate the timer if you need hot water and the water in the geyser is not at the right temperature.  Rain or shine, you will always have hot water.

WHAT SIZE GEYSER IS BEST?
We work on the principal of about 50 litres per person.

No. of persons

1

2

3

4

5

6

7

8

Size of Solar System

50lts

100lts

150lts

200lts

250lts

300lts

350lts

400lts

 

Heat Pumps

WHAT ARE HEAT PUMPS?
Heat Pumps are machines which heat up water using the ambient air as the main source of heat. Heat is transferred from the surrounding air into the heat pump, and is used to heat the water passing through the heat exchanger in the heat pump.  Electrical energy is used to drive a compressor within the system. Heat Pumps can be connected to any standard electrical geyser.

BENEFITS OF A HEAT PUMP
Heat Pumps are one of the most efficient hot water heating systems.  The free environmental energy provides approximately 75% of the heat pump’s energy, and only about 25% of energy is electrical. Other benefits include:

  • Can operate 24 hours per day even in cold water conditions.
  • Excellent return on investment especially in industrial applications.
  • Can be placed outside and out of sight.
  • Discharging cold air as waste, this may be ducted as air conditioning.
  •  

    Heating Capacity:

    3.5kW unit for 100/150lt water heater
    5.5kW unit for 200/250lt water heater
    7.0kW unit for up to a 450lt water heater

     

    Geyserwise Control Units


    Geyserwise can save you up to 50% on your hot water bill, depending on the condition of the appliance, by replacing your conventional geyser thermostat with and electronic thermostat and probe. It will enable you to regulate your electricity usage with four time settings per day, seven days a week, while concurrently detecting most problems you could encounter with your geyser. The control unit will be installed in your home, easy accessible and straight forward to operate. It will enable you to control your hot water, displaying the temperature of your hot water.

    Geyserwise units were designed and patented in South Africa and work on traditional geysers and most solar powered geysers. Geyserwise is SABS approved.

    Features

  • Replaces the conventional thermostat with a digital system
  • Digital water temperature reading setting
  • Control your geyser from your palm with controller
  • Convenient to operate
  • Microprocessor intelligent control
  • Power off memory timer
  • Earth leakage protection
  • High temperature cut out at 85 degrees centigrade
  • Element failure detection
  • Scale build-up detection
  • Probe failure detection
  • Load shedding capability to off peak periods
  • Can be integrated with home alarm system zone
  • Real-time clock
  • Four daily programmable time settings
  • Battery backup on power failure