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Ground Source Heat Pumps

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Domestic Range

Get the most out of the underground energy of your home thanks to our Classic Clausius ground source heat pump, specially designed to be combined with ACS tanks of any capacity, according to your needs. Include the option of models with active and passive cooling system to offer an optimal comfort experience throughout the year.




The domestic range has been designed to provide maximum efficiency with the least environmental impact. The use of cutting-edge technology makes the difference in the design of these ground source heat pumps, eco-friendly and easy to install. Find out its two configurations: Clausius Classic and Clausius Elite, adaptable to your needs.

  • Copeland inverter technology
  • Power ranges of 1-10 kW, 3-15 kW and 5-25 kW
  •  Three phase or single phase power supply


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Patented technology that guarantees 200 liters of DHW up to 80/85 ºC without electrical heaters. With the Clausius Elite models we adapt to your needs ensuring maximum efficiency and integration in minimum space. Find the configuration that best meets your expectations.

  • DHW production up to 85 ºC, patented system
  • Inverter technology
  • Power ranges of 1-10 kW, 3-15 kW and 5-25 kW
  • Three-phase and single-phase power supply

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In CLASSIC and ELITE configurations and in all H and HC models, we can integrate a passive cooling production system. The passive cooling system consists of one heat exchanger and its corresponding 3-way valves in both brine and heating circuits.
In all models, activation and control of passive cooling production is carried out by the heat pump itself. In models HC PC, it is possible to select between different options, only passive cooling production, only active cooling production, or both. In case of using both systems (passive and active cooling), the heat pump always decides the optimal production system, giving priority to passive cooling.


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In CLASSIC configuration and in all H and HC models, a system with desuperheater can be integrated.
The system with desuperheater allows the production of DHW at high temperature as well as a simultaneous production of heating and DHW or swimming pool and cooling with DHW or swimming pool in HC DS models. The desuperheater system consists of one heat exchanger (desuperheater), a circulation pump and the corresponding valves and control system. Our desuperheater system allows:

Simultaneous production of heating and DHW at high temperature.
Simultaneous production of cooling and DHW at high temperature.
Simultaneous production of heating and swimming pool.
Simultaneous production of cooling and swimming pool.
Production of only DHW using the condenser and desuperheater simultaneously, which increases the efficiency of the heat pump in these processes


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In CLASSIC configuration, all H and HC models can be combined with a DHW tank with desuperheater to produce DHW at high temperature. Combination of CLASSIC models with DHW tank with desuperheater allows DHW production at temperatures up to 80 ºC without electric heaters.
CLASSIC models combined with DHW tanks with desuperheater include all connection and control elements of the DHW production system and are supplied preloaded with refrigerant and with quick connections. The capacities of CLAUSIUS DHW tanks with desuperheater available are 250, 300 and 500 liters. The use of these tanks enables to considerably increase the amount of DHW available. The use of a 500 liters tank with DHW at 80 ºC would allow to obtain more than 1000 liters of DHW for domestic use at 38 ºC.

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In CLASSIC and ELITE configurations and in all models, we can integrate the CLAUSIUS Advance Control system.
The unique CLAUSIUS “Advance Control System” has been specifically designed by CLAUSIUS, allowing the control of complex installations, CLAUSIUS Air Source and CLAUSIUS Hybrid Systems, as well as the integration of the heat pumps with photovoltaic installations. CLAUSIUS Advance Control incorporates all the functionalities of the CLAUSIUS Standard control system. Furthermore, adds the features that are detailed below.

  •  Control of 5 mixing groups.
  •  Independent control of 6 zones with heating and cooling thermostats.
  •  Control of the DHW recirculation system by temperature.
  •  Control of 3 in-line electric heaters.
  •  Control with flow switches in both brine and heating circuits.
  •  Simultaneous use of Th-tunes, Internet Kit and Data Acquisition Kit.
  •  Indoor temperature and humidity measurements.
  •  Control of bivalent systems through on-off of the complementary system.
  •  Control of secondary circuits from the buffer tank.
  •  Control of the CLAUSIUS ground-air source hybrid system.
  •  Control of the heat pump combined with photovoltaic systems

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All models in CLASSIC and ELITE configurations are also available in white finish.

Why choose Clausius?


    In Clausius heat pumps manufacturing, we only use components from the European premium brands.


    Clausius heat pumps allow production of heating, cooling and domestic hot water (DHW) IN a single installation.


    Allow passive cooling production with extremely low energy consumption and cost, technologically exceeding air source heat pumps.


    Do not require noisy fans and do not generate air drafts. All their components are silent and sound insulated inside the case. In addition, as they are buried or inside the house, they do not cause any kind of visual impact.


    Clausius ground source heat pumps are controlled with simple thermostats and do not require any user interaction, providing great comfort.


    They do not require any type of fuel and do not generate flames or smoke, so they do not need fuel storage tanks or chimneys.


    Installations with ground source heat pumps require minimal maintenance and have a long life by using a simple, proven, known and very reliable technology.


    Market leading ErPA+++ rating. They provide a far more energy efficiency than traditional systems and other types of heat pumps, so the cost of heating is drastically reduced, achieving significant savings.

10 Benefits of the heat pumps powered by renewables:


1. Reduced Carbon Emissions:

ERV and HRV systems provide a continuous supply of fresh outdoor air while expelling stale indoor air. This helps maintain a healthier indoor environment by reducing the concentration of pollutants, odors, and contaminants.

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2. Energy Efficiency:

Heat pumps are inherently efficient because they move heat rather than generate it through combustion. When combined with renewable energy, their efficiency is further enhanced, as the energy input comes from sources with high energy conversion efficiency.

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3. Lower Operating Costs:

Renewable energy sources like solar, wind, and geothermal are typically free or have low operating costs. Heat pumps that use these sources can significantly lower energy bills, making them cost-effective over the system's lifespan.

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4. Energy Independence:

Generating your own renewable energy allows you to become less reliant on external energy sources and utility providers. This enhances your energy security and reduces vulnerability to energy price fluctuations.

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5. Long-Term Sustainability:

As renewable energy sources are replenished naturally, they ensure a long-term and sustainable energy supply for heat pumps.

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6. Improved Air Quality:

Since heat pumps don't burn fossil fuels on-site, they don't release pollutants and harmful emissions into the air, leading to improved indoor and outdoor air quality.

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7. Incentives and Rebates:

Many governments and utilities offer incentives, tax credits, and rebates to encourage the adoption of renewable energy systems, which can help offset the initial installation costs.

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8. Enhanced Property Value:

Homes and buildings equipped with renewable energy-powered heat pump systems often have higher property values due to their energy efficiency and reduced operating costs.

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9. Mitigated Energy Price Volatility

Renewable energy sources are less susceptible to market price fluctuations compared to fossil fuels, providing greater stability in energy costs.

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10. Community Engagement:

Adopting renewable energy systems can contribute to community engagement, as it demonstrates your commitment to environmental sustainability and encourages others to consider similar options.

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How heat pumps work with various renewable energy sources?

Heat pumps can be powered by renewable energy sources such as solar, wind, and geothermal energy to provide efficient heating and cooling. When renewable energy is used to operate heat pumps, the overall system becomes more environmentally friendly and sustainable.

Main Roof - angle 1

1. Solar-Powered Heat Pumps:

  • Solar energy is captured using photovoltaic (PV) panels, which convert sunlight into electricity.
  • This electricity is used to power the heat pump's compressor and other components.
  • The heat pump uses the electricity to drive the refrigeration cycle, transferring heat from a low-temperature area (e.g., outdoor air or ground) to a high-temperature area (indoors or hot water storage).

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Ingegnere con gilet e caschetto fa manutenzione alla turbina eolica alta 100 metri, in montagna

3. Wind-Powered Heat Pumps:

  • Wind turbines generate electricity from the kinetic energy of the wind.
  • The generated electricity is used to operate the heat pump, following the same process as solar energy process. The heat pump transfers heat as needed, either for space heating or cooling and domestic hot water.

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5. Geothermal-Powered Heat Pumps:

  • Geothermal energy is derived from the Earth's natural heat, available underground.
  • A ground source heat pump (GSHP) is used to extract heat from the ground and transfer it to a building.
  • GSHPs can work in both heating and cooling modes by exchanging heat with the ground through a loop system.
  • Renewable electricity may still be required to power the heat pump's compressor and other components, enhancing the overall efficiency of the system.

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9 STEPS to installing a Heat Pump System with Renewables Energy Source

1. Site Assessment and Planning:

  • Determine the heat pump type: air-to-air, air-to-water, ground source, etc., based on your heating and cooling needs.
  • Evaluate the location for installation, considering factors like available space, climate, and access to renewable energy sources (if applicable).
  • Check if any permits or approvals are required for installation in your area.

2. Sizing and Design:

  • Calculate the heat load of your building to determine the appropriate heat pump capacity.
  • Design the distribution system for heating and cooling (ductwork, piping, radiators, etc.).
  • Plan the integration of renewable energy sources such as solar panels or wind turbines.

3. Renewable Energy Source Installation:

  • If installing solar panels, determine the suitable location and orientation for optimal sunlight exposure.
  • Install solar panels or wind turbines according to manufacturer guidelines and local regulations.
  • Connect the renewable energy system to the electrical grid or storage system.

4. System Components:

  • Purchase the heat pump unit along with necessary components like air handlers, coils, expansion valves, etc.
  • For ground source systems, plan and install the ground loop or boreholes if applicable.

5. Preparation:

  • Install any required electrical wiring or circuits for the heat pump and renewable energy system.
  • Ensure the installation site is ready and clean for efficient installation.

6. Indoor Unit Installation and Outdoor Unit Installation:

  • Install the indoor unit, connecting it to the distribution system (ductwork, radiators, etc.).
  • Ensure proper insulation and sealing to prevent energy loss.
  • Position the outdoor unit on a stable surface with sufficient clearances for airflow.
  • Connect refrigerant lines between the indoor and outdoor units.

7. Refrigerant Charging and Electrical Connection:

  • Charge the system with refrigerant as per manufacturer specifications.
  • Check for refrigerant leaks and proper pressure levels.
  • Connect the heat pump and renewable energy system to the electrical grid or storage system.
  • Ensure proper grounding and compliance with safety codes.

8. Controls and Integration and Testing and Commissioning and User Training


  • Install and configure the thermostat or control system to operate the heat pump and renewable energy sources efficiently.
  • Integrate the renewable energy system with the heat pump controls.
  • Test the heat pump system in both heating and cooling modes.
  • Verify the operation of the renewable energy system and its integration with the heat pump.
  • Check for leaks, system pressures, and temperature differentials.
  • Provide training to the building owner or user on how to operate and maintain the heat pump and renewable energy system.
  • Explain troubleshooting and maintenance tasks specific to the integrated system.

9. Regular Maintenance:

  • Establish a maintenance schedule to ensure the ongoing efficiency and performance of the heat pump and renewable energy system.

Need help? Book a call at a time to suit your schedule

The Hercuglas team is delighted to talk with you.

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