Domestic waterworks – what exactly is it?
Get the water flowing: The Einhell domestic waterworks can be used for a wide variety of tasks and save a lot of tap water. Consisting of a pump, a pressure vessel and a pressure control, the various models ensure the transport of clear water from a water reservoir to the point of consumption. From there, you can use the water in the house, yard and garden; for example, for lawn and garden watering, to supply water to your washing machine or even to flush the toilet.
But how do domestic waterworks with all the individual parts work and when is it worthwhile for you? We compared the devices and summarised some tips on the topic of the domestic waterworks for you.
Einhell domestic waterworks can support the water supply in your home.
How do domestic waterworks operate?
The most important components of domestic waterworks are the pressure boiler, the pump and the pressure switch: the pump sucks the water from the well and transports it into the pressure boiler. This collects a certain amount of water, so that the domestic waterworks don't have to be started up every time it is used. The pressure switch is used to check and measure the pressure, which switches the pump on in the event of negative pressure and automatically switches it off in the event of positive pressure.
The domestic waterworks can be connected to a separate water pipe, which you can connect to several consumption points, such as the washing machine or toilet in your house and the watering system in the garden. When the consumption point is put into operation; for example, when the tap is operated, the water is supplied directly from the pressure boiler. If it is empty, the pump automatically supplies water from the water source. This means that you are always supplied with water by the best domestic waterworks from Einhell.
Domestic waterworks are mainly used in connection with washing machines or toilet flushing.
Technical specifications of domestic waterworks
When purchasing domestic waterworks, certain values provide information about the performance of the device. To ensure that you are always supplied with water, you should take a closer look at these features. The Einhell ECO-Power enables many models to achieve a higher flow rate while consuming less electricity. This is of great importance in addition to some other points. We have summarised for you exactly what the various technical features say about the performance of the pumps.
- Delivery: The maximum flow rate indicates how much water the device can transport from the extraction point to the consumption point. Depending on the model, domestic waterworks can supply up to 5,000 litres of water per hour.
- Delivery pressure: In some Einhell models, the delivery pressure is up to 5 bar, which is more than sufficient for common domestic use. To be quite precise, the delivery pressure designates the pressure with which the pump acts on the water to be delivered. Incidentally, the maximum delivery pressure and delivery height are in direct relationship to one another. A maximum delivery height of 10 metres corresponds to a delivery pressure of 1 bar.
- Delivery height: The delivery height describes the height difference between the pump and the outlet point of the water from the connected hose. How high the maximum delivery height depends on the maximum delivery pressure. For example, if you want to pump over 20 metres, you need a pump with a delivery pressure of 2 bar. This is particularly important for use in multi-storey houses.
- Suction height: The Einhell devices also impress in our comparison when it comes to suction height, boasting up to 8 metres. The suction height is the height difference between the water surface and the paddle wheel, which is located approximately in the centre of the pump.
The basic technical characteristics of domestic waterworks are delivery volume, delivery pressure, delivery height and intake height.
Technical features of the domestic waterworks
The devices from Einhell are characterised by many technical features: A strong conveying capacity, the thermal protection on the motor and low-noise motors make the devices suitable for everyday use. Some devices are also equipped with a water fill indicator, a dirt indicator and a pressure gauge. This way, you can always keep an eye on the condition of the device and know when you need to clean the filter or whether there is constant pressure in the boiler.
Despite the large capacity of the pressure boilers, the devices are also easy to transport thanks to the ergonomic carrying handle and a relatively low total weight.
The stable pump housing and the built-in, high-quality mechanical seals ensure that you will enjoy your domestic waterworks for a long time. Certain models also have protection mechanisms such as a dry-running safety device or scald protection, which prevents damage to the pump. If you want to maintain your domestic waterworks or need a specific spare part for repair, you will find the necessary accessories in the Einhell Service Shop.
Storage and maintenance of the domestic waterworks
To protect the device from the elements, it should be stored in a dry room and on a stable surface. Dry workshops or cellars are particularly suitable for this purpose. It is best to place the device in such a way that it is always within reach and the water can be conveyed optimally through the pipes. Also be sure to regularly service the device to minimise wear.
Regularly maintained and optimally placed, the domestic waterworks reliably support domestic water supply.
When does it make sense to use a domestic waterworks system?
What are the benefits of using a domestic waterworks system?
Beyond the desire for sustainability and greater self-sufficiency, the decision to purchase a domestic waterworks system is usually driven by the intention to use well or rainwater as a cost-effective alternative to expensive mains water. And rightly so: according to Statista, toilet flushing alone accounts for 27% of household water consumption. A further 12% is used for laundry, and 6% for garden irrigation and car care. This adds up to an average potential saving of 45% of total drinking water consumption.
With these figures as a guide, anyone can calculate from their water bill how much money could be saved by using a domestic waterworks system with well or rainwater.
A domestic waterworks system can help reduce drinking water consumption in the home and partially supply service water for use in the house and garden.
Important factors when choosing a domestic waterworks system
A domestic waterworks system is particularly worthwhile if you want to use well or rainwater as an alternative to mains water. By using alternative water sources, you can reduce your monthly water costs while also choosing a more environmentally friendly solution. If your water usage in the home and garden is high enough that the investment in a well or cistern, including a domestic waterworks system and accessories, would pay off within a few years, this step can definitely be worthwhile. However, whether investing in a domestic waterworks system is the right choice for you also depends on several other factors.
- Type of source: Domestic waterworks work best in combination with boreholes, which also make deeper water sources accessible.
- Depth of water source: The maximum suction height for domestic waterworks is 7–8 metres. Up to this depth, you can reliably pump water with the various domestic waterworks models. For deeper groundwater levels, you will need to use a deep well pump.
- Water quality: Another important factor is water quality. In the case of groundwater containing iron, despite iron filters, there is still a risk of deposits forming in your toilet and washing machine due to rusty well water. Before purchasing domestic waterworks, you should therefore have the water quality of your water source tested.
What other costs can be expected after purchase?
Good domestic waterworks systems require relatively little maintenance. In winter, they should be stored in a frost-free environment and fully drained. Apart from electricity costs during operation, the only recurring expense is the membrane in the pressure tank, which usually needs to be replaced every 2 to 3 years.
If using a well, an additional iron filter may be necessary depending on the water quality. These filters generally only require backflushing for cleaning and are therefore virtually maintenance-free.
Experience shows that it makes little sense to cut corners when purchasing a domestic waterworks system. Investing in a solid, high-quality model will reward you with a reliable unit that serves you well for many years.
Summary: Get the water flowing for your home and yard
Einhell's domestic waterworks are efficient and convenient to operate. The performance and practical features your device should have ultimately depends on which areas you want to supply with water. You can find the right device for your purposes by comparing the individual models from Einhell – here you will find the best domestic waterworks for every purpose – and at a favourable price-performance ratio. Make things happen with the domestic waterworks from Einhell!
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Published on 09.11.2022
Tom Weber is a product specialist at Einhell. In his blog posts, he not only shares his in-depth expertise in using various Einhell devices but also provides inspiration and instructions for DIY projects that every home improvement enthusiast can tackle at home.