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I'll show you how to test a water installation (fresh water, heating or underfloor heating) to find any leaks. In practice, you often see pressure fluctuations and pressure drops without any immediately identifiable reason. In addition to thermal fluctuations and pipe expansions, shut-off valves can also be the cause. Depending on their age and wear, these never seal 100%. Tools required: Hand pump (20 euro pump is completely sufficient) Pressure gauge 0-10 bar with large scale Optional: additional ball valve 00:00 Connecting pressure test pump 02:10 Venting lines 03:14 Setting maximum pressure 05:31 Visual inspection for leaks 07:31 Maintaining maximum pressure 08:22 Reducing to test pressure 09:30 Unexpected pressure drop 10:50 Repeating test 13:06 Result after 10 hours #Pressure test #Fresh water #Water installation