If the Enzo one.drop reports an anomaly and the questionnaire does not reveal a clear cause, the next step in our diagnostic process is the main shut-off valve test. It is simple to perform and delivers clear, data-based results.

The principle: a clean reference measurement

The Enzo one.drop continuously measures the temperature difference between your main water pipe and the ambient air. To determine with certainty whether unwanted water is actually flowing, our system needs a controlled reference point — a period during which we know with certainty: nothing is flowing here.

We create this reference point by asking you to close your home’s main shut-off valve completely for 6 hours. What sounds like a simple action is methodically precise: it creates a controlled measurement condition that allows our AI to interpret the sensor data clearly.

Why this matters Closing the water supply creates a clean zero measurement. Only then can we compare the sensor data with a clear reference state.

How the test works

1. You close the main shut-off valve — ideally during a period when you do not need water, for example when you are away from home or overnight.
2. You inform us through the Enzo app that the valve is now closed. This step is essential so our team can interpret the measurement correctly.
3. The sensor continues measuring, just as it always does, without interruption or manual adjustment.
4. After 6 hours, you open the valve again.
5. Our team evaluates the data and compares the period with the closed valve against comparable rest phases with the water supply open.

Essential Inform us through the Enzo app as soon as the valve is closed. Without this timestamp, our team cannot reliably interpret the measurement.

What the results mean

Are the data sets identical?

The pipe behaves the same in both phases, with no measurable difference. This means that the previously identified sources explain the reported water flow completely. We can close the anomaly in a transparent way and recalibrate the sensor if necessary. You will receive a final explanation from us.

Do the data sets differ?

The pipe remained cooler while the water supply was open than while it was closed, even though no intentional water use was taking place. This is exactly the finding the Enzo one.drop is designed for: a hidden, uncontrolled leak in the pipe system. The targeted search for the cause now begins.

Why this test is so reliable

Anyone who thinks scientifically knows the concept of a zero measurement. Before evaluating an experiment, you need a controlled starting point — a reference state in which nothing happens.

This is exactly what the main shut-off valve test provides. It turns a suspicion into a measurable, reproducible statement. No speculation, no estimation — just a comparison of two clearly defined data sets, evaluated by our expert team.

The result The result is clear: either the known sources explain the water flow, or we have a robust indication of a hidden leak.