Using hot water wisely

CoolStart: Hot water flows only when it’s needed

With hansgrohe CoolStart faucets, only cold water flows when the handle is in the central position. Hot water is activated only when the handle is deliberately moved towards the hot-water side. This means that no hot water is drawn when the faucet is used in the central position. As a result, the energy required for water heating can be reduced. In hotels, frequent use may increase the overall potential for energy savings.

Benefit from CoolStart technology every day

With CoolStart faucets, warm or hot water only flows when you really need it. Users only use energy to heat the water when they actively move the faucet lever to the left.

A smart twist for reduced energy use

With conventional faucets without CoolStart, the lever's basic position may request mixed or warm water, depending on the faucet setting and installation. With CoolStart, only cold water flows in the basic position.
But you don’t always need hot water. Cold water is often sufficient for getting a drink, washing hands, brushing teeth, watering flowers, or cleaning. 
With CoolStart, warm water is only requested when users actively move the lever to the left.
Users decide how high the temperature should be – however many times a day. Typical hansgrohe: with CoolStart faucets, you can enjoy full convenience and modern design. The CoolStart range is aimed at a wide target group and offers professionals attractive sales opportunities. 

    Saving energy every day with CoolStart faucets.
    Key arguments for CoolStart include its potential to reduce hot water consumption in certain usage scenarios and, as a result, the amount of energy required for water heating.

    If you start cool, you may save energy

    The following example calculation shows how much energy can potentially be saved: If a four-person household uses a hansgrohe CoolStart faucet for a total of 20 minutes per day over the course of one year, the calculated energy required for hot water preparation can theoretically be up to 508 kWh lower than with a comparable hansgrohe faucet without CoolStart.
    The calculation is based, among other factors, on an assumed flow rate of 5 l/min at 3 bar and on heating the water from 10°C to 35°C. Actual savings depend on individual usage habits, the installation and the type of hot water system. The full basis of calculation can be found at the bottom of this page.*

    Lavatory faucets with CoolStart technology
    hansgrohe wants to support consumers, customers, and guests in making good use of precious resources. Technologies such as CoolStart or EcoSmart are a great help in this regard.
    CoolStart faucet Finoris

    The Finoris faucet with stylish pin handle starts with cold water only. The small hot/cold symbol illustrates the key point.

    hansgrohe CoolStart faucet

    CoolStart faucets save valuable resources because they consume less energy.

    CoolStart faucet in Chrome

    This faucet starts cool, because you don’t need hot water every time you use it. Cold water is often enough, for example, for getting a drink, washing your hands, or watering flowers.

    Innovative technology in modern hansgrohe design.

    Many modern hansgrohe bathroom lines are equipped with technologies like CoolStart or EcoSmart. No one has to compromise on design or comfort.

    Matte black FinishPlus faucet

    CoolStart faucets are available in a variety of FinishPlus surface colors, such as the stylish Matte Black.

    Save energy in all areas with CoolStart faucets. 

    Whether in a hotel room or a private bathroom: Purchasing CoolStart lavatory faucets pays off. Let your customers know about this enormous savings potential!

    Select products with CoolStart technology

    * The values shown are calculation examples and do not represent guaranteed savings. The comparison is based on a hansgrohe CoolStart basin faucet and a technically comparable hansgrohe basin faucet without CoolStart.
    The calculation is based on a total daily usage time of 20 minutes in a four-person household, an assumed flow rate of 5 l/min at 3 bar, and heating the water from 10°C to 35°C. An energy demand of 0.029 kWh is assumed for heating one litre of water by 25°C.
    The energy savings shown depend in particular on how often hot water would be unintentionally requested in the handle center position when using a faucet without CoolStart. Actual results may vary depending on individual usage behaviour, the installation, the heating system, the energy source and energy prices.