Selection Criteria Tabs and Showers

Selection Criteria Tabs and Showers

Methodology

Topten.eu presents the most energy-efficient tabs, flow regulators and shower heads of Europe.

All products listed on Topten.eu fulfill the following criteria:

Energy efficiency class A according to the European Water Label
Listed on the official product database of the European Water Label
A photo of the product must be included in the product database
Available on the European market

Order of presentation

The products are ranked according to their yearly energy consumption (kWh/year).

Glossary

Brand and Model

Name of the manufacturing company and the specific model.

Energy consumption per year

The energy consumption per year is based on fixed assumption on consumer behavior and calculated with the Energy Calculator from the European Water Label. Calculations in the energy calculator are based on the following assumptions:

Showers: 1 / day, 7 min ea.
Washbasin taps: 5 / day, 1 min. ea.
Kitchen taps: 5 / day, 1 min ea.
Conditions:
- Cold water inlet temperature: 15 °C
- Hot water output temperature
  38°C (showers, basin taps)
  45°C (kitchen taps)

Product data must be measured and declared according to the Unified Water Label.

Electricity costs in 10 years

Assumptions:

Costs for electricity during 10 years (product's life time)
Tariff of electricity: 0.20 €/kWh (there can be large differences depending on country or electrical utility)

Flow rate (l/min)

Maximum flow-rate through the appliance.

Efficiency class

Energy efficiency class according to the European Water Label. Performance bands indicate the energy efficiency class of the product. Dark green equals class A, light green class B, yellow class C, orange class D and red class E.