Tips for saving energy and water in the bathroom | Duravit
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Saving energy and water in the bathroom

Everyone can save energy and water – every day and everywhere. But how can you put this into practice simply and effectively in your daily routine? Are there any useful tips for saving water and energy? And how can bathroom faucets and showerheads help?

Water consumption and potential for savings

A true but little-known fact is that the amount of drinkable water available globally is constantly shrinking. This is a real problem with an increasingly negative impact on the environment and also on your pocket. And yet in Germany, for example, every person uses, on average, 127 liters of water per day.¹ What can we do about this? It’s important to increase people’s awareness of their water use and encourage them to actively save water.

In 000 days

Consumption in Germany
liters per person
With Duravit faucets
liters saved
With this, you could fill
bathtubs
Or water
trees per week

Water-saving faucets for lower water consumption

Duravit faucets are generally designed to be water-saving products as a standard feature. All Duravit washbasin faucets are thus developed to incorporate a reduced, economical water use level of 5.5 l/min, without compromising any of the high levels of comfort. What’s more, there are other innovative features which make it incredibly easy for you to save water as part of your daily routine.

A. MinusFlow Hand Shower
Model description:

Duravit 3-jet 110 MinusFlow hand shower, UV0652016010 (9 l/min.)

Statement:

With a Duravit MinusFlow hand shower, a family of four can save up to EUR 1,079.19 per year compared to a conventional hand shower, as well as up to 834.21 kg CO2. *

* The calculation is based on the following assumptions:

  • Note: The savings shown result from the reduced water consumption of the Duravit MinusFlow hand shower (9 l/min.) compared to a standard hand shower (approx. 15 l/min.). Energy savings are also generated through the reduced consumption of hot water, with less energy needed to heat the water.
  • Each family takes a daily seven-minute shower with an average water temperature of 100.4 °F (38 °C).
  • Type of energy used: Electricity / Electricity price: EUR 0.37 per kWh
    Water output temperature: 50°F (10°C) / the cost of heating 1 liter of water from the output temperature to 100.4 °F (38 °C): EUR 0.0120176** / water price: EUR 0.00563 per liter / CO2 emissions factor 420 g per kWh / MinusFlow water consumption per minute: 9 l / water consumption of conventional hand shower per minute: 15 l
  • ** EUR 0.0120176 = 50.4 (28) (temperature difference: 100.4 °F (38 °C) – 50 °F (10 °C)) * 0.00116 (kilowatt hours necessary to heat 1 liter of water by 0.56 °F (1 °C)) * 0.37 (electricity price in EUR per kWh)
  • The stated saving of EUR 1,079.19 per year referred to is made up of (i) saving in water consumption of EUR 344.29 (= 6 (water consumption difference of 15 – 9 liters) * 7 (duration of shower per person in minutes) * 4 (number of persons in household) * 7 (showering frequency per person per week) * 52 (number of weeks) * 0.00563 (water price per liter in EUR)) and (ii) saving in energy costs of EUR 734.90 (=6 (water consumption difference 15 – 9 liters) * 7 (duration of shower per person in minutes) * 4 (number of persons in household) * 7 (showering frequency per person per week) * 52 (number of weeks) * 50.4 (28) (temperature difference: 100.4 °F (38 °C) – 50 °F (10 °C) * 0.00116 (kilowatt hours necessary to heat 1 liter of water by 1 °C)) * 0.37 (electricity price in EUR per kWh)).
  • The CO2 saving referred to is based on 1,986.22 kWh of energy saved at a CO2 emissions factor of 420g per kWh.
B. MinusFlow Showerhead
Model description:

Duravit 1-jet 230 MinusFlow showerhead, UV0662017010 (9 l/min.)

Statement:

With a Duravit MinusFlow showerhead, a family of four can save up to EUR 2,697.97 per year compared to a conventional hand shower, as well as up to 2,085.53 kg CO2 .*

* The calculation is based on the following assumptions:

  • Note: The savings shown result from the reduced water consumption of the Duravit MinusFlow showerhead (9 l/min.) compared to a standard hand shower (approx. 24 l/min.). Energy savings are also generated through the reduced consumption of hot water, with less energy needed to heat the water.
  • Each family takes a daily seven-minute shower with an average water temperature of 100.4 °F (38 °C).
  • Type of energy used: Electricity / Electricity price: EUR 0.37 per kWh
  • Water output temperature: 50°F (10°C) / the cost of heating 1 liter of water from the output temperature to 100.4 °F (38 °C): EUR 0.0120176** / water price: EUR 0.00563 per liter / CO2 emissions factor 420 g per kWh / MinusFlow water consumption per minute: 9 l / water consumption of conventional showerhead per minute: 24 l
  • ** EUR 0.0120176 = 50.4 (28) (temperature difference: 100.4 °F (38 °C) – 50 °F (10 °C)) * 0.00116 (kilowatt hours necessary to heat 1 liter of water by 0.56 °F (1 °C)) * 0.37 (electricity price in EUR per kWh)
  • The stated saving of EUR 2,697.97 per year is made up of (i) saving in water consumption of EUR 860.71 (= 15 (water consumption difference of 24 – 9 liters) * 7 (duration of shower per person in minutes) * 4 (number of persons in household) * 7 (showering frequency per person per week) * 52 (number of weeks) * 0.00563 (water price per liter in EUR)) and (ii) saving in energy costs of EUR 1.837.25 (=15 (water consumption difference 24 – 9 liters) * 7 (duration of shower per person in minutes) * 4 (number of persons in household) * 7 (showering frequency per person per week) * 52 (number of weeks) * 50.4 (28) (temperature difference: 100.4 °F (38 °C) – 50 °F (10 °C) * 0.00116 (kilowatt hours necessary to heat 1 liter of water by 1 °C)) * 0.37 (electricity price in EUR per kWh)).
  • The CO2 saving referred to is based on 4,965.54 kWh of energy saved at a CO2 emissions factor of 420g per kWh.
C. MinusFlow Washbasin Faucet
Model description:

Duravit No.1 M MinusFlow single lever basin mixer, N11022001010 (3.5 l/min.)

Statement:

With a Duravit MinusFlow single lever basin mixer, a family of four can save up to EUR 192.66 per year compared to a conventional hand shower, as well as up to 143.44 kg of CO2.*

* The calculation is based on the following assumptions:

  • Note: The savings shown result from the reduced water consumption of the Duravit MinusFlow single lever basin mixer (3.5 l/min.) compared to a standard single lever basin mixer (approx. 5.5 l/min.). Energy savings are also generated through the reduced consumption of hot water, with less energy needed to heat the water.
  • Each family member uses the single lever basin mixer 10.9 times a day for 22.4 seconds each time, at an average water temperature of 95 °F (35 °C).
  • Type of energy used: Electricity / Electricity price: EUR 0.37 per kWh / water output temperature: 50 °F (10 °C) / the cost of heating 1 liter of water from the output temperature to 95 °F (35 °C): EUR 0.01073** / water price: EUR 0.00563 per liter / CO2 emissions factor 420 g per kWh / MinusFlow water consumption per minute: 3.5 l / water consumption of a conventional single lever basin mixer per minute: 5.5 l
  • ** EUR 0.01073 = 45 (25) (temperature difference: 95 °F (35 °C) – 50 °F (10 °C)) * 0.00116 (kilowatt hours necessary to heat 1 liter of water by 0.56 °F (1 °C)) * 0.37 (electricity price in EUR per kWh)
  • The stated saving of EUR 192.66 per year to is made up of (i) saving in water consumption of EUR 66.30 (= 2 (water consumption difference of 5.5 – 3.5 liters) * 0.37 (duration of handwashing per person in minutes) * 4 (number of persons in household) * 10.9 (handwashing frequency per person per day) * 365 (number of days in year) * 0.00563 (water price per liter in EUR)) and (ii) saving in energy costs of EUR 126.36 (=2 (water consumption difference 5.5 – 3.5 liters) * 0.37 (duration of handwashing per person in minutes) * 4 (number of persons in household) * 10.9 (handwashing frequency per person per day) * 365 (number of days) * 50.4 (25) (temperature difference: 100.4 °F (35 °C) – 50 °F (10 °C)) * 0.00116 (kilowatt hours necessary to heat 1 liter of water by 0.56 °F (1 °C)) * 0.37 (electricity price in EUR per kWh)).
  • The CO2 saving referred to is based on 341.51 kWh of energy saved at a CO2 emissions factor of 420g per kWh.
D. FreshStart Washbasin Faucet
Model description:

Duravit Tulum single lever basin mixer M FreshStart, TU1021001010 (5.5 l/min.)

Statement:

With a Duravit FreshStart single lever basin mixer, a family of four can save up to EUR 277.99 per year compared to a conventional hand shower, as well as up to 315.56 kg of CO2.*

* The calculation is based on the following assumptions:

  • Note: The savings shown result from the reduced energy consumption of the Duravit FreshStart single lever basin mixer compared to a standard single lever basin mixer, through its cold-water default setting on the lever’s middle setting. This leads to cold water being used more frequently than hot, based on habitual user behavior.
  • Each family member uses the single lever basin mixer 10.9 times a day for 22.4 seconds each time, at an average water temperature of 59 °F (15 °C).**
  • ** In 80% of cases, 59°F (15 °C) is the weighted average temperature used in the middle setting of the lever on the FreshStart single lever basin mixer with a water output temperature of 50 °F (10 °C); a hot water temperature of 95 °F (35 °C) is used in 20% of cases.
  • Type of energy used: Electricity / Electricity price: EUR 0.37 per kWh / water output temperature: 50 °F (10 °C) / the cost of heating 1 liter of water from the output temperature to 95 °F (35 °C): EUR 0.01073 ***/ the cost of heating 1 liter of water from the water output temperature to 59 °F (15 °C) (weighted average when using FreshStart): EUR 0.002146** / water price: EUR 0.00563 per liter / CO2 emissions factor 420 g per kWh /
  • *** EUR 0.01073 = 45 (25) (temperature difference: 95 °F (35 °C) – 50 °F (10 °C)) * 0.00116 (kilowatt hours necessary to heat 1 liter of water by 0.56 °F (1 °C)) * 0.37 (electricity price in EUR per kWh)
  • ** EUR 0.002146 = 9 (5) (temperature difference 59 °F (15 °C) – 50 °F (10 °C)) * 0.00116 (kilowatt hours necessary to heat 1 liter of water by 0.56 °F (1 °C)) * 0.37 (electricity price in EUR per kWh)
  • The saving of EUR 277.99 per year referred to is made up of saving in energy costs of EUR 277.99 (=5.5 (water consumption in liters per minute) * 0.37 (duration of handwashing per person in minutes) * 4 (number of persons in household) * 10.9 (handwashing frequency per person per day) * 365 (number of days) * 41.4 (20) (temperature difference: 100.4 °F (35 °C) – 59 °F (15 °C) * 0.00116 (kilowatt hours necessary to heat 1 liter of water by 1 °C)) * 0.37 (electricity price in EUR per kWh)).
  • The CO2 saving referred to is based on 751.33 kWh of energy saved at a CO2 emissions factor of 420g per kWh.

Our energy-saving heroes

MinusFlow

1. Save water with MinusFlow

With MinusFlow, you automatically save water. With a flow limiter in the aerator, the flow rate is limited from the outset. This significantly reduce your consumption.

Fact: MinusFlow limits the flow rate of the washbasin faucets from a maximum of 5.5 l/min to just 3.5 l/min. This saves up to 40% of the water flow. Similarly, the savings in our hand showers are also up to 40% and even higher in the showerheads, at up to 60%. This amounts to an annual saving of up to EUR 192.16 with our washbasin faucets, up to EUR 1,081.65 with the hand showers and up to EUR 2,704.12 with the showerheads.*
Soft water jet due to AirPlus

2. Save water with AirPlus

Thanks to the AirPlus features, the water flow is enriched with air. This not only saves water, but makes the flow soft and full and ensures that less water is splashed on the washbasin. AirPlus is available for standard faucets as well as for the respective MinusFlow versions.

Fact: AirPlus combines saving water with extra comfort.

3. Save energy with FreshStart

In the energy-saving FreshStart versions of our single-lever basin mixers, the middle setting of the lever is set to only provide cold water. For hot water, the user has to actively move the lever to the left. In this way, the water is only heated when it’s needed. And the visually attractive middle setting on the handle can be used without any unnecessary consumption of hot water.

Fact: Duravit FreshStart faucets offer complete control of your hot water consumption, thereby effectively reducing your daily energy use. With FreshStart, a family of four can save on average over 300 kg of CO² annually, corresponding to 751.33 kWh or up to EUR 277.99.*




Water-saving tips forthe bathroom

1. Water-saving tip: Use water-saving faucets

Using the right faucets can yield huge energy and water savings. All Duravit faucets are water-saving as standard. In addition, selected products offer useful features, such as MinusFlow and AirPlus, which also support this water-saving function. So it’s really easy to save water when showering, washing your hands or having a bath.

2. Water-saving tip: Economical rimless toilets

Rimless toilets have the great advantage of being very easy to clean without using large quantities of water. The efficient dual flushing system on the cover plate, with its two options, is also a must-have – small button, big savings. To actively save water, we recommend using the larger button only when absolutely necessary.

3. Water-saving tip: Faucet aerator

Whether you use a water-saving showerhead or a faucet aerator for your washbasin to save water, it’s definitely worth checking that the faucets actively limit the amount of water used. With Duravit products, the MinusFlow feature does just this.

4. Water-saving tip: Hygiene coatings

Bathroom ceramics that take less water to keep clean can also save water. Duravit WonderGliss, the innovative ceramic glaze, ensures that no dirt adheres to the surface, preventing a build-up. HygieneGlaze, with its antibacterial coating, also helps keep the toilet easier to clean, another water-saving bonus.

5. Water-saving tip: Turn off the water in between times

It’s often even possible to save water by turning off the water during use, as it’s often left running when someone is soaping their hands, for example, or brushing their teeth. You can also save water when taking a shower, by turning off the showerhead while you’re shampooing your hair.
Armaturenbroschüre




Energy-saving tips for the bathroom

1. Energy-saving tip: Proper ventilation and heating

By ventilating and heating correctly, you can save energy. The most energy-efficient form of ventilation is ‘intermittent ventilation’ three to four times a day, such as after a shower or bath, as these generate a lot of steam. When ventilating, it’s essential that the heating is switched off. You also don’t need to heat the bathroom all the time – it’s better to heat it just before showering or taking a bath.

2. Energy-saving tip: Use thermostats

Thermostats maintain a constant water temperature and equalize pressure variations. In this way, they can help save energy. In addition, the HeatLock feature prevents unintentional adjustment of the water temperature above 100.4 °F (38 °C). So it doesn’t just protect against scalding; it also ensures that the water isn’t unintentionally heated to a higher temperature than required.

3. Energy-saving tip: Don’t forget about the small electrical appliances

Whether it’s the electric shaver or toothbrush, there are numerous small electrical appliances in the bathroom which need to be charged regularly. To save energy, however, they shouldn’t be permanently on charge. Unplug the appliance or charger from the socket when they’re not required and use the battery power.

4. Energy-saving tip: Lighting

You can also save energy in your choice of lighting. Duravit’s mirrors and mirrored cabinets use LED wall lights which use less energy compared to standard lights, and also last a long time.

1 Quelle: https://de.statista.com/statistik/daten/studie/6378/umfrage/wasserverbrauch-in-ausgewaehlten-laendern/

2 Quelle: https://www1.wdr.de/fernsehen/aktuelle-stunde/strassenbaeume-giessen-100.html

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