900W (48-72V) Dc Element
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For use in 100L Off-Grid PV Water Heating system (No AC Back-up)
The PTC Element
A Consumer can replace his traditional resistive heating element with a Geyserwise PTC
Titanium element and save electricity and have a an electric element expected to last in the
region of 10 years.
Energy saving capabilities
In figure 3 below a like for like comparison is made between a traditionsl 2kW resistive
element (Green Line) and the Geyserwise PTC element (Red line).
It is estimated that roughly 15% of energy will be saved by replacing a traditional element
with a Geyserwise PTC Titanium element. The consumer may also have further savings by not
having to replace traditional resistive elements on a regular basis
Advantages of the PTC element.
The consumer will have the benefit of buying a product that can last up to ten years. “In certain
areas in South Africa elements are replaced every sencond month
The consumer have the added benefit of saving electricity by using the PTC element.
Problems with traditional inefficient resistive heating elements
Today many residences are experiencing regular problems with their resistive heating
elements due to:
Premature failure due to hard water conditions. Some of our customers have to
regularly replace their resistive heating elements due to poor quality of water. This
leads to scale build up and inefficiencies in electricity consumption to heat hot water.
Premature failure due to cheap imports of resistive heating elements. In many cases
materials are not suitable to our water conditions and leads to inefficiencies in
electricity consumption to heat hot water
Recognizing the necessity for product refinement Geyserwise developed an advanced
immersion heater element that offers inherent safety and improved functionality over typical
resistance-wire heaters. The element is constructed of Titanium and utilizes Positive Thermal
Coefficient (PTC) chips as the heat source – this offers a self-limiting capability previously
unavailable, and eliminates the possibility of overheating when used properly. This
advantageous concept represents a major milestone in immersion water heating both from
an Alternating Current (AC) and Direct Current (DC) supply source. The PTC chips also have
energy saving capabilities as the resistance decreases as the temperature of the water
A consumer can save energy my merely replacing their resistive element with the Geyserwise
PTC Titanium element OR by installing a Geyserwise PTC Photovoltaic water heating system.