Metal tubes tend to have less biofilm thenthan PEX tubing. Although it is not clear if PEX material does really increase the probability for legionnaires' and other diseases. Metal tends to block germs to some extend. Some users complain about a different water taste after installing non-metal tubing, but that could also happen after switching from non-metal to metal tubes (that happens much less frequently).
The very robust inner coating with minerals, which is mentioned in other answers, protects the metal against direct contact with water. This contributes to a very long life expectancy. A cleaning with acids tends to increase the probability for pit corrosion - it should be avoided with old metal tubing.
A "circuit breaker" for domestic water nets can be very helpful for a better sleep. It protects against big damage caused by water leakages or failing installations or Alzheimer's disease and opened faucets.
The visible holes in the floor could be covered/filled in order to prevent insects or rodents to enter the floor/wall. A warm water line can attract animals.
If there is enough space for tube insulation, it can save energy, reduce micro circulation and reduce noise.
To prepare for a later substitution, PEX tubes could be installed under the floor without connection to the water net (no water stagnation if not yet used). Or bigger empty tubes with pull wires could be installed.
Freezing water lines do crack most of the time if the freezing takes place in more thenthan one place and 2 freezing zones are growing towards each other. In that case, PEX lines can also burst. If a line freezes from one side only, the pressure can be often released by the pressure relief valve next to a boiler. If the provider's line is not frozen, the pressure can be often released into the outside water net, since back flow preventers often do not work 100% reliable.
Many problems in old metal installations are caused by the ignored golden rule: installation from less to more noble metal in flow direction. F.e., substituting a part of a steel tube with a copper tube resulting in the sequence steel - copper - steel will most likely cause (pit) corrosion in the downstream steel. Isolating plastic parts between the different metals will not prevent this type of (local) corrosion.
If the boiler's sacrificing anode is consumed, small metal parts could also start pit corrosion, especially if hot water metal circulation lines are installed. If the current can be tested, it should be less thenthan minus 0.3mA, measured against the boiler mass/housing. F.e., a value of minus 2mA is an indicator for a working anode, which does not need to be replaced.
Metal tubes tend to have less biofilm then PEX tubing. Although it is not clear if PEX material does really increase the probability for legionnaires' and other diseases. Metal tends to block germs to some extend. Some users complain about a different water taste after installing non-metal tubing, but that could also happen after switching from non-metal to metal tubes (that happens much less frequently).
The very robust inner coating with minerals, which is mentioned in other answers, protects the metal against direct contact with water. This contributes to a very long life expectancy. A cleaning with acids tends to increase the probability for pit corrosion - it should be avoided with old metal tubing.
A "circuit breaker" for domestic water nets can be very helpful for a better sleep. It protects against big damage caused by water leakages or failing installations or Alzheimer's disease and opened faucets.
The visible holes in the floor could be covered/filled in order to prevent insects or rodents to enter the floor/wall. A warm water line can attract animals.
If there is enough space for tube insulation, it can save energy, reduce micro circulation and reduce noise.
To prepare for a later substitution, PEX tubes could be installed under the floor without connection to the water net (no water stagnation if not yet used). Or bigger empty tubes with pull wires could be installed.
Freezing water lines do crack most of the time if the freezing takes place in more then one place and 2 freezing zones are growing towards each other. In that case, PEX lines can also burst. If a line freezes from one side only, the pressure can be often released by the pressure relief valve next to a boiler. If the provider's line is not frozen, the pressure can be often released into the outside water net, since back flow preventers often do not work 100% reliable.
Many problems in old metal installations are caused by the ignored golden rule: installation from less to more noble metal in flow direction. F.e., substituting a part of a steel tube with a copper tube resulting in the sequence steel - copper - steel will most likely cause (pit) corrosion in the downstream steel. Isolating plastic parts between the different metals will not prevent this type of (local) corrosion.
If the boiler's sacrificing anode is consumed, small metal parts could also start pit corrosion, especially if hot water metal circulation lines are installed. If the current can be tested, it should be less then minus 0.3mA, measured against the boiler mass/housing. F.e., a value of minus 2mA is an indicator for a working anode, which does not need to be replaced.
Metal tubes tend to have less biofilm than PEX tubing. Although it is not clear if PEX material does really increase the probability for legionnaires' and other diseases. Metal tends to block germs to some extend. Some users complain about a different water taste after installing non-metal tubing, but that could also happen after switching from non-metal to metal tubes (that happens much less frequently).
The very robust inner coating with minerals, which is mentioned in other answers, protects the metal against direct contact with water. This contributes to a very long life expectancy. A cleaning with acids tends to increase the probability for pit corrosion - it should be avoided with old metal tubing.
A "circuit breaker" for domestic water nets can be very helpful for a better sleep. It protects against big damage caused by water leakages or failing installations or Alzheimer's disease and opened faucets.
The visible holes in the floor could be covered/filled in order to prevent insects or rodents to enter the floor/wall. A warm water line can attract animals.
If there is enough space for tube insulation, it can save energy, reduce micro circulation and reduce noise.
To prepare for a later substitution, PEX tubes could be installed under the floor without connection to the water net (no water stagnation if not yet used). Or bigger empty tubes with pull wires could be installed.
Freezing water lines do crack most of the time if the freezing takes place in more than one place and 2 freezing zones are growing towards each other. In that case, PEX lines can also burst. If a line freezes from one side only, the pressure can be often released by the pressure relief valve next to a boiler. If the provider's line is not frozen, the pressure can be often released into the outside water net, since back flow preventers often do not work 100% reliable.
Many problems in old metal installations are caused by the ignored golden rule: installation from less to more noble metal in flow direction. F.e., substituting a part of a steel tube with a copper tube resulting in the sequence steel - copper - steel will most likely cause (pit) corrosion in the downstream steel. Isolating plastic parts between the different metals will not prevent this type of (local) corrosion.
If the boiler's sacrificing anode is consumed, small metal parts could also start pit corrosion, especially if hot water circulation lines are installed. If the current can be tested, it should be less than minus 0.3mA, measured against the boiler mass/housing. F.e., a value of minus 2mA is an indicator for a working anode, which does not need to be replaced.
Metal tubes tend to have less biofilm then PEX tubing. Although it is not clear if PEX material does really increase the probability for legionnaires' and other diseases. Metal tends to block germs to some extend. Some users complain about a different water taste after installing non-metal tubing, but that could also happen after switching from non-metal to metal tubes (that happens much less frequently).
The very robust inner coating with minerals, which is mentioned in other answers, protects the metal against direct contact with water. This contributes to a very long life expectancy. A cleaning with acids tends to increase the probability for pit corrosion - it should be avoided with old metal tubing.
A "circuit breaker" for domestic water nets can be very helpful for a better sleep. It protects against big damage caused by water leakages or failing installations or Alzheimer's disease and opened faucets.
The visible holes in the floor could be covered/filled in order to prevent insects or rodents to enter the floor/wall. A warm water line can attract animals.
If there is enough space for tube insulation, it can save energy, reduce micro circulation and reduce noise.
To prepare for a later substitution, PEX tubes could be installed under the floor without connection to the water net (no water stagnation if not yet used). Or bigger empty tubes with pull wires could be installed.
Freezing water lines do crack most of the time if the freezing takes place in more then one place and 2 freezing zones are growing towards each other. In that case, PEX lines can also burst. If a line freezes from one side only, the pressure can be often released by the pressure relief valve next to a boiler. If the provider's line is not frozen, the pressure can be often released into the outside water net, since back flow preventers often do not work 100% reliable.
Many problems in old metal installations are caused by the ignored golden rule: installation from less to more noble metal in flow direction. F.e., substituting a part of a steel tube with a copper tube resulting in the sequence steel - copper - steel will most likely cause (pit) corrosion in the downstream steel. Isolating plastic parts between the different metals will not prevent this type of (local) corrosion.
If the boiler's sacrificing anode is consumed, small metal parts could also start pit corrosion, especially if hot water metal circulation lines are installed. If the current can be tested, it should be less then minus 0.3mA, measured against the boiler mass/housing. F.e., a value of minus 2mA is an indicator for a working anode, which does not need to be replaced.
Metal tubes tend to have less biofilm then PEX tubing. Although it is not clear if PEX material does really increase the probability for legionnaires' and other diseases. Metal tends to block germs to some extend. Some users complain about a different water taste after installing non-metal tubing, but that could also happen after switching from non-metal to metal tubes (that happens much less frequently).
The very robust inner coating with minerals, which is mentioned in other answers, protects the metal against direct contact with water. This contributes to a very long life expectancy. A cleaning with acids tends to increase the probability for pit corrosion - it should be avoided with old metal tubing.
A "circuit breaker" for domestic water nets can be very helpful for a better sleep. It protects against big damage caused by water leakages or failing installations or Alzheimer's disease and opened faucets.
The visible holes in the floor could be covered/filled in order to prevent insects or rodents to enter the floor/wall. A warm water line can attract animals.
If there is enough space for tube insulation, it can save energy, reduce micro circulation and reduce noise.
To prepare for a later substitution, PEX tubes could be installed under the floor without connection to the water net (no water stagnation if not yet used). Or bigger empty tubes with pull wires could be installed.
Freezing water lines do crack most of the time if the freezing takes place in more then one place and 2 freezing zones are growing towards each other. In that case, PEX lines can also burst. If a line freezes from one side only, the pressure can be often released by the pressure relief valve next to a boiler. If the provider's line is not frozen, the pressure can be often released into the outside water net, since back flow preventers often do not work 100% reliable.
Many problems in old metal installations are caused by the ignored golden rule: installation from less to more noble metal in flow direction. F.e., substituting a part of a steel tube with a copper tube resulting in the sequence steel - copper - steel will most likely cause (pit) corrosion in the downstream steel. Isolating plastic parts between the different metals will not prevent this type of (local) corrosion.
If the boiler's sacrificing anode is consumed, small metal parts could also start pit corrosion, especially if hot water circulation lines are installed. If the current can be tested, it should be less then minus 0.3mA, measured against the boiler mass/housing. F.e., a value of minus 2mA is an indicator for a working anode, which does not need to be replaced.
Metal tubes tend to have less biofilm then PEX tubing. Although it is not clear if PEX material does really increase the probability for legionnaires' and other diseases. Metal tends to block germs to some extend. Some users complain about a different water taste after installing non-metal tubing, but that could also happen after switching from non-metal to metal tubes (that happens much less frequently).
The very robust inner coating with minerals, which is mentioned in other answers, protects the metal against direct contact with water. This contributes to a very long life expectancy. A cleaning with acids tends to increase the probability for pit corrosion - it should be avoided with old metal tubing.
A "circuit breaker" for domestic water nets can be very helpful for a better sleep. It protects against big damage caused by water leakages or failing installations or Alzheimer's disease and opened faucets.
The visible holes in the floor could be covered/filled in order to prevent insects or rodents to enter the floor/wall. A warm water line can attract animals.
If there is enough space for tube insulation, it can save energy, reduce micro circulation and reduce noise.
To prepare for a later substitution, PEX tubes could be installed under the floor without connection to the water net (no water stagnation if not yet used). Or bigger empty tubes with pull wires could be installed.
Freezing water lines do crack most of the time if the freezing takes place in more then one place and 2 freezing zones are growing towards each other. In that case, PEX lines can also burst. If a line freezes from one side only, the pressure can be often released by the pressure relief valve next to a boiler. If the provider's line is not frozen, the pressure can be often released into the outside water net, since back flow preventers often do not work 100% reliable.
Many problems in old metal installations are caused by the ignored golden rule: installation from less to more noble metal in flow direction. F.e., substituting a part of a steel tube with a copper tube resulting in the sequence steel - copper - steel will most likely cause (pit) corrosion in the downstream steel. Isolating plastic parts between the different metals will not prevent this type of (local) corrosion.
If the boiler's sacrificing anode is consumed, small metal parts could also start pit corrosion, especially if hot water metal circulation lines are installed. If the current can be tested, it should be less then minus 0.3mA, measured against the boiler mass/housing. F.e., a value of minus 2mA is an indicator for a working anode, which does not need to be replaced.
Metal tubes tend to have less biofilm then PEX tubing. Although it is not clear if PEX material does really increase the probability for legionnaires' and other diseases. Metal tends to block germs to some extend. Some users complain about a different water taste after installing non-metal tubing, but that could also happen after switching from non-metal to metal tubes (that happens much less frequently).
The very robust inner coating with minerals, which is mentioned in other answers, protects the metal against direct contact with water. This contributes to a very long life expectancy. A cleaning with acids tends to increase the probability for pit corrosion - it should be avoided with old metal tubing.
A "circuit breaker" for domestic water nets can be very helpful for a better sleep. It protects against big damage caused by water leakages or failing installations or Alzheimer's disease and opened faucets.
The visible holes in the floor could be covered/filled in order to prevent insects or rodents to enter the floor/wall. A warm water line can attract animals.
If there is enough space for tube insulation, it can save energy, reduce micro circulation and reduce noise.
To prepare for a later substitution, PEX tubes could be installed under the floor without connection to the water net (no water stagnation if not yet used). Or bigger empty tubes with pull wires could be installed.
Freezing water lines do crack most of the time if the freezing takes place in more then one place and 2 freezing zones are growing towards each other. In that case, PEX lines can also burst. If a line freezes from one side only, the pressure can be often released by the pressure relief valve next to a boiler. If the provider's line is not frozen, the pressure can be often released into the outside water net, since back flow preventers often do not work 100% reliable.
Many problems in old metal installations are caused by the ignored golden rule: installation from less to more noble metal in flow direction. F.e., substituting a part of a steel tube with a copper tube resulting in the sequence steel - copper - steel will most likely cause (pit) corrosion in the downstream steel. Isolating plastic parts between the different metals will not prevent this type of (local) corrosion.
If the boiler's sacrificing anode is consumed, small metal parts could also start pit corrosion, especially if hot water circulation lines are installed. If the current can be tested, it should be less then minus 0.3mA, measured against the boiler mass/housing. F.e., a value of minus 2mA is an indicator for a working anode, which does not need to be replaced.