The water, energy, CO₂, and cost savings listed on our website and in our catalogues, flyers, etc., are based on reference values and model calculations. Actual savings depend on the installation, individual usage patterns, and, among other factors, the type of water heating system. All default values can be customized in the advanced settings of our › savings calculator.
Reference values
This is how we calculate water, energy, CO₂, and cost savings on our website and in our catalogues.
Water
The water savings are calculated by comparing the flow rate of a NEOPERL product labeled as water-saving with the flow rate of a reference product, both at a standard water pressure of 3 bar.
Assuming the same service life, this results in a calculated total reduction of approximately 40 %.
Energy
When hot water is used, the water must be heated. If hot water consumption decreases, the energy required to heat the water decreases accordingly. The calculations are based on the assumptions entered into the savings calculator regarding:
- Average temperature of cold and hot water
- Proportion of hot water
- Use duration
- Household size
- Energy source
CO2
The CO₂ calculation in the savings calculator takes into account the energy required for hot water production.
The amount of CO₂ that can be saved depends primarily on the energy source used:
- Electricity
- Gas
- Oil
Costs
Potential cost savings are calculated based on the water and energy rates entered into the savings calculator.
Actual savings may vary depending on:
- Place of residence
- Rate plan (water and electricity providers)
- Household size
- Usage patterns
Sources
Bundesumweltministerium: › BMUKN: Duschen und Waschbecken