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(not to be confused with continuous-flow water heaters, see below)
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AquaClics should not be used for taps or showers with pressureless water heaters (also known as low-pressure boilers or under-counter boilers). The increase in pressure could result in water damage. Please consult the table below to identify pressureless heaters and distinguish them from "continuous-flow heaters", which have no problems with AquaClics: |
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Pressureless Water Heater |
Continuous-Flow Heater |
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| Usage with AquaClic | no |
yes |
| Pressure indicated in bar | no | Often. If more than 1 bar, AquaClics can be used with confidence. |
| Energy | Mostly electric. | Often gas, more recent models sometimes electric. |
| Operation | As soon as the water cools down, the entire contents are re-heated. | Makes a noise when it starts working. Only heats when hot water is running. |
| Temperature indicated | Usually not. Mostly shown as levels: I II III | Mostly with thermometer display, thermostat |
| Where fitted |
Often where a supply of hot water was fitted belatedly, e.g. older buildings. | Usually in older buildings. |
| Tap outlet | Diameter often less than 17 mm / 3/8" | Usually a normal tap. |
| Often with no thread. | Mostly standard thread (22/24 mm) | |
| Tap usually drips after use. | Does not drip after use (unless faulty) | |
Sieve/Filter(Pictures shown from below) |
Mostly none, or star-shaped  |
Normal metal or plastic sieve, e.g.: |
| Device size |
Usually small (minibar size): approx 60cm and 50 litres. | Usually larger, various sizes |
| Water jet strength |
Usually weak |
Normal pressure. It can happen that a continuous-flow heater has insufficient pressure, so with an AquaClic:
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