Insert parameters
Quantity, in units
Currently measured flow rate
Request flow rate
(Recommended: 6l/min washbasin, shower place 9l/min)
Duration of use per person
(Average: washbasin 3min, 10min shower place)
washbasin

How many wash basins are in your house / building?

Please count the existing wash basins (eg WC, bathroom, etc.) together and enter total here.

You can determine the flow rate in liters per minute of your washing room in this way:

  1. Use our measuring bag(request here)
  2. Use our measuring cup (request here)
  3. Use a measuring cup in your house and stop the time it takes to fill a liter in the measuring cup.

    Enter the measured time here:

    seconds
l/min

Our experience will help you in choosing your desired flow rate:

Private households:

Kitchen:8 L / min (to fill pots and sink fast enough with water) saving potential: up to 50%

Bath:6L / min, maximum comfort, saving potential: up to 60%

Guest toilet wash basins: 5L / min, maximum comfort, saving potential: up to 70%

commercial Use:

We recommend using the RCM spray, so you can reach a saving potential up to 90%. *

The request flow rate depends on use:

  • 2 L / min for a quick hand washing after using the toilet (maximum saving potential)
  • 3 L / min for maximum comfort
  • 4 L / min for the best cleaning results (eg very dirty hands) with minimum water consumption

* Relative to a standard faucet flow class A: Consumption 15 L / min at 3 bar.

min/day

The average use is 3 minutes per person and day.

shower areas

How many shower areas are in your home / building?

Please count the existing shower areas (eg, bathtub, shower, etc) together and enter total here.

You can determine the flow rate in liters per minute of your shower area in this way:

  1. Use our measuring bag (request here)
  2. Use our measuring cup (request here)
  3. Use a measuring cup in your house and stop the time it takes to fill a liter in the measuring cup.

    Enter the measured time here:

    seconds
l/min

Our experience will help you in choosing your flow rate:

  • 7 L / min: for maximum savings potential (only possible with RCM professional handshower)
  • 10 L/min: our recommendation, saving about 60% *
  • 12 L/min: for maximum comfort, saves about 30% *

* relative to a standard shower: Consumption 18 l / min at 3 bar.

Note: In continuous heating devices you have to check the minimum flow rate. Older devices will not start the water heating with less than 10 L / min.

min/day

The average use is 6 minutes per person and day.

More details
Number of people
Current potable water costs
in € / m³
Current wastewater costs
in € / m³
Total water costs
in € / m³
energy sources

Please specify the persons per household / building.

The current cost of potable water can be found in your last billing or on website of your provider.

Averages Germany

The current cost of waste water can be found in your last billing or on website of your provider.

Averages Germany

Their current water costs resulting from the sum of the drinking water and waste water costs (both of the previous details will be omitted). This can be found in your last billing or on website of your provide

Averages Germany
Gas
Heating Oil
Electricity
district heat

Select the energy sources you use.

The CO 2 consumption is calculated in this way.

For your information:

  • Gas: 251 Gramm CO2 per KWh
  • Öl: 319 Gramm CO2 per KWh
  • Strom: 601 Gramm CO2 per KWh
  • Fernwärme: 218 Gramm CO2 per KWh

Source: Ökoinstitut e.V. Ergebnisse aus Gemis 4.5
Update 2008, CO2 emissions include the entire life cycle including transportation and material input, excluding disposal.

your Result

Your current water consumption

This is calculated from the specified amount of washing and shower seats, your measured flow rate, duration of use and the number of people who live in your home / building.

Furthermore, we count on a daily use of wash basins and a shower room use of 200 days a year, per person.

This value applies only to the specified washing and shower areas. This value does not match with your overall annual water consumption.

Your desired consumption

This is calculated from the specified quantity of washing and shower places, given your desired flow rate, duration of use and the number of people who live in your home / building

Furthermore, we count on a daily use of wash basins and a shower room use of 200 days a year, per person.

This value applies only to the specified washing and shower areas. This value does not match with your overall annual water consumption.

water saving

This amount of water you can save each year at your washing and shower places.

CO2 savings potential in Kg/Year:

This water costs you can save each year with RC Mannesmann professional products.

CO2 saving potential in kg / year:

This Volume CO2 you can save each year. Because your water consumption and the cost for hot water heating reduce. Therefore you save energy costs. This is environment friendly and good for your purse.

By saving water while the hot water consumption is reduced. This saves energy, for example. Gas, oil or electricity.

The output values are related to a hot water temperature of shower places of 40 ° C and washing areas of 35 ° C.

In a hot water supply temperature of 55 ° C This represents a share of 65% warm water.

Consequently, it is no need to heat the 65% of saved water

In order to heat 1m³ of potable water from the supply line of about 10 ° C to 55 ° C are required in about 52 KWh of energy. (specific heat capacity of water C = 1.163 kWh / kg * K).

Amortization

Period in months in which the investment in RC Mannesmann professional products. Refinanced. If you choose our products, you find here, from when your Investing saves you money.

- Detailed results see below. see below.