


2kW PTC Element vs 2kW Standard Spiral Element
Aim
This test was carried out to determine the final average water temperature in the geyser using a fixed input energy amount (kWh) for various element types. The test aims to show that using the same amount of energy, a higher final average temperature can be reached using the Xtend range.
Methodology
In this test scenario, the following steps were followed:
1. A 150L B spec Kwikot geyser was fitted with the required heating element.
2. The geyser was filled with water from the mains, recording the ambient water temperature.
3. The geyser was heated to the target energy of 3.75 kWh.
4. Once this target was reached, the power supply to the geyser was shut down, and the end time was recorded.
5. The water was drained from the geyser, and the average water temperature was recorded.
Results
The table below shows the percentage of energy saved when using a PTC Xtend element compared to a standard spiral element. This table shows that a higher final temperature can be reached with the PTC Xtend element for the same energy input.

Conclusions
- The 2kW Xtend PTC element saves 23% more energy when compared to its counterpart 2kW standard spiral element.
- The Xtend PTC element successfully produces a higher average water temperature than the standard element, which consumes the same energy.
- The Xtend PTC element consistently produces an average water temperature close to the read on the probe measuring the water within the geyser. This confirms that the element heats more uniformly and consistently than its counterpart, which produces heat layers within the geyser.
2kW PTC element vs 2kW Standard Spiral element
Aim
This test was carried out to determine the final average water temperature in the geyser using a fixed input energy amount (kWh) for various element types. The test aims to show that using the same amount of energy, a higher final average temperature can be reached using the Xtend range.
Methodology
In this test scenario, the following steps were followed:
1. A 150L B spec Kwikot geyser was fitted with the required heating element.
2. The geyser was filled with water from the mains, recording the ambient water temperature.
3. The geyser was heated to the target energy of 3.75 kWh.
4. Once this target was reached, the power supply to the geyser was shut down, and the end time was recorded.
5. The water was drained from the geyser, and the average water temperature was recorded.
Results
The table below shows the percentage of energy saved when using a PTC Xtend element compared to a standard spiral element. This table shows that a higher final temperature can be reached with the PTC Xtend element for the same energy input.

Conclusions
- The 2kW Xtend PTC element saves 23% more energy when compared to its counterpart 2kW standard spiral element.
- The Xtend PTC element successfully produces a higher average water temperature than the standard element, which consumes the same energy.
- The Xtend PTC element consistently produces an average water temperature close to the read on the probe measuring the water within the geyser. This confirms that the element heats more uniformly and consistently than its counterpart, which produces heat layers within the geyser.
2kW PTC element vs 2kW Standard Spiral element
Aim
This test was carried out to determine the final average water temperature in the geyser using a fixed input energy amount (kWh) for various element types. The test aims to show that using the same amount of energy, a higher final average temperature can be reached using the Xtend range.
Methodology
In this test scenario, the following steps were followed:
1. A 150L B spec Kwikot geyser was fitted with the required heating element.
2. The geyser was filled with water from the mains, recording the ambient water temperature.
3. The geyser was heated to the target energy of 3.75 kWh.
4. Once this target was reached, the power supply to the geyser was shut down, and the end time was recorded.
5. The water was drained from the geyser, and the average water temperature was recorded.
Results

Conclusions
- The 2kW Xtend PTC element saves 23% more energy when compared to its counterpart 2kW standard spiral element.
- The Xtend PTC element successfully produces a higher average water temperature than the standard element, which consumes the same energy.
- The Xtend PTC element consistently produces an average water temperature close to the read on the probe measuring the water within the geyser. This confirms that the element heats more uniformly and consistently than its counterpart, which produces heat layers within the geyser.