Hello,
we are renovating a house from the 1950s and need to replace the water pipes. We are looking for a good system, preferably made of aluminum composite pipe or PVC.
Could you please tell me if this is a reasonable choice (or what questions to ask to determine if it’s suitable) and also recommend a system?
We are currently considering Uponor, Mepla, Marley DREMA, and JRG Sanipex. Are there any experiences with these?
Many thanks!
we are renovating a house from the 1950s and need to replace the water pipes. We are looking for a good system, preferably made of aluminum composite pipe or PVC.
Could you please tell me if this is a reasonable choice (or what questions to ask to determine if it’s suitable) and also recommend a system?
We are currently considering Uponor, Mepla, Marley DREMA, and JRG Sanipex. Are there any experiences with these?
Many thanks!
fragefüreinen schrieb:
I don’t fully understand that – doesn’t circulation just mean using the same amount of water?Not exactly. I don’t have to run the tap until warm water arrives. On the other hand, I use more energy to keep the water circulating and to keep reheating it.
We have a circulation system for comfort reasons; in terms of costs, it basically cancels out.
Circulation (of the hot water pipe) has various advantages as well as disadvantages.
Advantages:
• Comfort, hot water is available almost immediately
• Prevention of Legionella bacteria with correct temperature design (60°C / 55°C)
• Can be retrofitted
Disadvantages:
• Costs (pump energy, energy to reheat cooled water)
• If designed incorrectly, it can cause more Legionella problems than without circulation (long residence times in the system → bacterial growth)
• Cannot be retrofitted later (or only with high cost)
For short pipes with a volume under 3 liters (0.8 gallons), circulation is generally pointless, and Legionella is usually not an issue. Unless you specifically want the comfort of hot water arriving a few seconds earlier. In single-family homes, there is generally no obligation to take specific measures regarding Legionella.
Note: This is a layperson’s opinion.
Advantages:
• Comfort, hot water is available almost immediately
• Prevention of Legionella bacteria with correct temperature design (60°C / 55°C)
• Can be retrofitted
Disadvantages:
• Costs (pump energy, energy to reheat cooled water)
• If designed incorrectly, it can cause more Legionella problems than without circulation (long residence times in the system → bacterial growth)
• Cannot be retrofitted later (or only with high cost)
For short pipes with a volume under 3 liters (0.8 gallons), circulation is generally pointless, and Legionella is usually not an issue. Unless you specifically want the comfort of hot water arriving a few seconds earlier. In single-family homes, there is generally no obligation to take specific measures regarding Legionella.
Note: This is a layperson’s opinion.
F
fragefüreinen2 May 2021 18:49hanghaus2000 schrieb:
The cistern is only for rainwater for the garden. You need quite a bit of water for that.Okay, but that’s not what I asked – otherwise the question would have been: How do you save water/money? (and circulation basically doesn’t really save you money – it takes several years for the circulation to pay off. For you it’s mainly about comfort). I do understand that a cistern saves watering water.
It’s about the pipe system. You already mentioned that you’re not familiar with that and that you used both “some kind of plastic pipes” and copper. The answer to my question would have been about the “some kind of plastic pipes” and your experience with them.
N
nordanney2 May 2021 22:40MVR fittings are all good, regardless of the manufacturer. The fittings as well. The pipe and fittings must be from the same system.
I recently had Viega Raxofix installed. High quality, but much too expensive. Next time, I will choose a “simpler” system that also allows for some DIY work. For example, Pipetec (half the price).
Raxofix has its own pressing jaws that only fit this system. Many other suppliers use standard profiles.
I recently had Viega Raxofix installed. High quality, but much too expensive. Next time, I will choose a “simpler” system that also allows for some DIY work. For example, Pipetec (half the price).
Raxofix has its own pressing jaws that only fit this system. Many other suppliers use standard profiles.
Hi,
Aluminum composite pipe from Geberit "Mepla" with compatible fittings. Recently, we have been experiencing problems with incorrect pressing of the fittings. Geberit is now launching a new product called "FlowFit," which should help prevent or better detect faulty pressings.
For riser pipes, stainless steel can be used (make sure to check the fittings here as well). The system also works with a composite pipe, such as FlowFit.
Interestingly, the current issue with these systems is that the pipes are gas-tight but not watertight.
Aluminum composite pipe from Geberit "Mepla" with compatible fittings. Recently, we have been experiencing problems with incorrect pressing of the fittings. Geberit is now launching a new product called "FlowFit," which should help prevent or better detect faulty pressings.
For riser pipes, stainless steel can be used (make sure to check the fittings here as well). The system also works with a composite pipe, such as FlowFit.
Interestingly, the current issue with these systems is that the pipes are gas-tight but not watertight.
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