Heat pump – Advice

  • The right heat pump

    Outdoor air, the ground or water – the energy source determines the choice of heat pump

    Heat pumps – do you know what you’re heating with? Not? Doesn’t matter… we’re happy to explain it to you! Watch the video and learn everything about the different heat sources.

    Various types of heat pump are available to you, depending on whether you want to use outdoor air, the ground (geothermal collector or geothermal probe system) or water (groundwater or surface water) as a heat source. In some cases, the extract air from mechanical ventilation systems can also be used by a heat pump (exhaust air heat pump). However, this is only suitable for homes with good thermal insulation.  

    Air source heat pump – for utilising outdoor air

    • High temperature fluctuations throughout the year (-18 °C to +30 °C)
    • Lowest heating output at extremely low outside temperatures
    • Lowest COP at low outside temperatures
    • Defrosting of evaporator at outside temperatures of -10 °C to +7 °C
    • Lower seasonal performance factor compared with brine | water and water | water heat pumps
    • Easy installation of the heat pump – no groundworks required
    • No requirements relating to the size of the installation site
    • No official approval required
    Show all air source heat pumps

    Ground source heat pump – utilising the ground

    • Low temperature fluctuations throughout the year
    • Heating output throughout the year virtually constant
    • COP virtually constant irrespective of outside temperature
    • No defrosting of evaporator required
    • High seasonal performance factor
    • Groundworks required during installation of the heat pump
    • Geothermal collector requires a plot area of 1 to 2 times the living area
    • Geothermal probe must be reported or requires approval (local water board)
    Show all ground source heat pumps

    Water | water heat pump

    • Low temperature fluctuations throughout the year
    • Heating output throughout the year virtually constant
    • COP virtually constant irrespective of outside temperature
    • No defrosting of evaporator required
    • High seasonal performance factor
    • The use of groundwater requires a delivery well and a return well
    • It also requires approval from your local water board 
    Show all water | water heat pumps

    Outdoor or indoor installation?

    Air source heat pump

    With air source heat pumps, you can choose between indoor or outdoor installation. Either outdoors in the garden or, for example, in a basement or utility room. There are also compact appliances with an integral DHW cylinder and mechanical ventilation. 

    Ground source and water | water heat pump

    Ground source and water | water heat pumps are installed indoors, where they are protected against the risk of frost. Their compact size and extremely quiet operation also makes them easy to install in a utility room. Subject to model, the appliances are already equipped with integral DHW cylinders.

    FAQ - questions and answers on heat pumps

    The new "ErP" Energy Label

    By the end of 2015, products from the energy sector will be given a separate label.

    Energy related products: "ErP"

    Operating modes

    Mono mode
    Here, the heat pump is the heat generator in the building. This operating mode is suitable for all low temperature heating systems up to 60 °C flow temperature.

    Mono energetic
    In this operating mode, the electric heat pump is backed up by an electric booster heater. This is required, particularly with air source heat pumps, to provide sufficient heating output at lower outside temperatures.

    Dual mode – alternative
    Down to a fixed outside temperature (e.g. 0 °C), the heat pump delivers the entire heating energy. When the temperature falls below that value, the heat pump switches itself OFF and the second heat generator takes over the heating operation.

    Dual mode – parallel
    Down to a certain outside temperature, the heat pump alone delivers the required heating energy. A second heat generator starts at lower temperatures. When the outside temperature falls below the second limit temperature, the heat pump switches off and the second heat generator takes over the entire heating operation. Unlike dual mode alternative operation, the heat pump proportion of the annual output is considerably higher.
     

    Reference: Plas Newydd

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    Reference: Mere Brook House

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    Reference: Soulton Hall

    Heat pump for historic country house

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    Reference: Oyster Catcher

    Green heating for new restaurant

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