Ground source heat pumps
Viessmann Vitocal 200-G – Advanced Ground-Source Heat Pump (6 kW, three-phase, without boiler)
The Viessmann Vitocal 200-G is a high-performance ground-to-water heat pump designed for consistent, energy-efficient heating using underground heat. This 6 kW three-phase unit offers outstanding reliability and efficiency for small to medium-sized residential properties. Operating with refrigerant R410A, it ensures long-term durability and stable performance in various climate conditions.
Designed for Systems Without Built-in Boiler
This configuration is delivered without a built-in domestic hot water tank, providing greater flexibility to integrate with custom or pre-existing DHW solutions.
Key Features and Benefits:
✔ Stable Efficiency – Ground-source system delivers high seasonal performance (SCOP)
✔ 6 kW Output – Ideal for small to medium-sized homes
✔ Three-Phase Power Supply – Ensures smooth and balanced operation
✔ Environmentally Safer R410A – Proven refrigerant with consistent thermal output
✔ Extremely Quiet Operation – Minimal noise thanks to underground energy extraction
✔ Compact Indoor Unit – No outdoor unit required
✔ Reliable All-Year Heating – Unaffected by seasonal temperature fluctuations
✔ Flexible Integration – Perfect for hybrid systems or existing heating loops
Vitocal 200-G offers the ultimate in silent, efficient, and low-maintenance heating, especially suited for areas where outdoor installations are limited.
Viessmann Vitocal 200-G – High-Efficiency Ground-Source Heat Pump (8 kW, three-phase, without boiler)
The Viessmann Vitocal 200-G is a powerful ground-to-water heat pump engineered for sustainable, year-round heating with minimal environmental impact. This 8 kW three-phase version is ideal for medium-sized homes requiring robust and silent indoor climate control. Powered by reliable R410A refrigerant, it offers long service life and high performance regardless of outdoor conditions.
For Systems Without Integrated DHW Tank
This model is provided without a built-in boiler, allowing smooth integration into existing domestic hot water and heating systems.
Key Features and Benefits:
✔ Strong 8 kW Output – Delivers sufficient heat for medium-sized houses
✔ Stable Ground-Source Efficiency – High SCOP for low yearly energy use
✔ Three-Phase Operation – Consistent performance even under high loads
✔ R410A Refrigerant – Trusted and durable for long-term system reliability
✔ Exceptionally Quiet – Indoor-only design with no outdoor noise emissions
✔ Space-Saving Indoor Unit – Ideal for properties with outdoor installation limits
✔ Reliable Performance in Any Season – Not affected by outdoor air temperatures
✔ Easy System Integration – Works well with hybrid setups or buffer tanks
Vitocal 200-G (8 kW) is the perfect solution for those seeking powerful, quiet, and energy-conscious geothermal heating.
Viessmann Vitocal 200-G – High-Efficiency Ground-Source Heat Pump (10 kW, three-phase, without boiler)
The Viessmann Vitocal 200-G (10 kW) is a powerful and silent ground-to-water heat pump designed for sustainable heating in medium to large residential properties. With its three-phase connection and R410A refrigerant, this unit ensures long-term performance, energy savings, and quiet operation throughout the year.
Boiler-Free System for Flexible Integration
This configuration is delivered without a built-in domestic hot water tank, offering flexible integration with existing or customized hot water systems.
Key Features and Benefits:
✔ 10 kW Heating Capacity – Ideal for medium to large residential homes
✔ Ground-Source Efficiency – Consistent performance with high SCOP values
✔ Three-Phase Power Supply – Balanced and reliable operation
✔ R410A Refrigerant – Proven technology with solid efficiency
✔ Indoor-Only Operation – No outdoor unit, ideal for sensitive zones
✔ Whisper-Quiet Performance – Virtually silent operation thanks to underground heat collection
✔ Year-Round Reliability – Unaffected by outdoor temperature changes
✔ System Flexibility – Easily integrates into buffer tanks or hybrid systems
Vitocal 200-G (10 kW) offers a smart combination of power, silence, and environmental responsibility for long-lasting, energy-efficient home comfort.
Viessmann Vitocal 200-G – High-Capacity Ground-Source Heat Pump (13 kW, three-phase, without boiler)
The Viessmann Vitocal 200-G (13 kW) is a powerful and efficient ground-to-water heat pump designed for larger residential buildings or properties with higher heating demands. It draws thermal energy from the ground, ensuring maximum energy efficiency, silent operation, and year-round performance. With a three-phase power supply and R410A refrigerant, this system offers long-term durability and minimal environmental impact.
No Integrated Boiler – Perfect for Custom Hot Water Systems
This version comes without a built-in domestic hot water tank, making it an ideal match for buffer tanks or tailored DHW configurations.
Key Features and Benefits:
✔ 13 kW Heating Power – Ideal for larger homes or multi-unit residences
✔ Stable Ground-Source Efficiency – Constant SCOP regardless of outside temperature
✔ Three-Phase Power – Smooth operation and support for higher loads
✔ R410A Refrigerant – Reliable and effective thermal performance
✔ Ultra-Quiet Design – No outdoor unit required, perfect for dense neighborhoods
✔ Indoor Installation – Space-saving and protected from weather conditions
✔ Year-Round Operation – Delivers consistent heat regardless of the season
✔ Flexible Integration – Easily connects with existing or hybrid heating systems
Vitocal 200-G (13 kW) is a top-tier solution for those needing silent, scalable, and sustainable heating for larger buildings.
Viessmann Vitocal 300-G – Premium Ground-Source Heat Pump (6 kW, three-phase, without boiler)
The Viessmann Vitocal 300-G (6 kW) is a high-performance, premium-class ground-to-water heat pump designed for homes that demand top energy efficiency and reliability. With advanced inverter technology, a three-phase power supply, and R410A refrigerant, this system provides precise heating and extremely quiet operation throughout the year.
Delivered Without Integrated DHW Tank
This model is supplied without a built-in domestic hot water tank, making it ideal for connection to custom-designed or existing hot water systems.
Key Features and Benefits:
✔ 6 kW Output – Perfect for small to medium-sized homes
✔ Inverter-Controlled Compressor – Highly precise temperature regulation and low energy consumption
✔ Ground-Source Technology – Stable and efficient regardless of outdoor conditions
✔ R410A Refrigerant – Reliable thermal performance with low environmental impact
✔ Extremely Quiet – Noise levels below 35 dB(A) – suitable for indoor installation
✔ Three-Phase Connection – Balanced power and smooth operation
✔ Compact Design – Saves space and integrates easily indoors
✔ Ideal for Passive or Low-Energy Homes – Designed for maximum efficiency
Vitocal 300-G (6 kW) is the ideal solution for homeowners who want superior performance, silent operation, and advanced energy management from a ground-source heat pump.
Viessmann Vitocal 200-G – High-Capacity Ground-Source Heat Pump (17 kW, three-phase, without boiler)
The Viessmann Vitocal 200-G (17 kW) is a high-capacity ground-to-water heat pump built for large residential homes and multi-unit buildings with high heating demands. It ensures silent, sustainable, and cost-efficient operation by extracting natural heat from the ground. Equipped with R410A refrigerant and a three-phase power connection, it provides long-term reliability and stable performance in any season.
No Integrated Boiler – Perfect for Custom DHW Systems
This model comes without a built-in domestic hot water tank, offering full compatibility with buffer tanks, solar systems, or custom DHW setups.
Key Features and Benefits:
✔ 17 kW Output – Designed for large buildings or high-demand properties
✔ Ground-Source Stability – Unaffected by outside temperature fluctuations
✔ Three-Phase Power – Smooth operation under heavy heating loads
✔ R410A Refrigerant – Long-lasting efficiency and safety
✔ Silent Indoor System – No outdoor unit needed
✔ Compact Installation – Indoor-friendly and weather-protected
✔ Year-Round Efficiency – Delivers consistent heating throughout all seasons
✔ Flexible Integration – Easily connects to hybrid or custom system configurations
Vitocal 200-G (17 kW) is the perfect solution for projects that demand silent strength, sustainability, and scalable performance.
Viessmann Vitocal 300-G – Premium Ground-Source Heat Pump (12 kW, three-phase, without boiler)
The Viessmann Vitocal 300-G (12 kW) is a premium ground-to-water heat pump designed to deliver exceptional energy efficiency, ultra-quiet operation, and precise temperature control. Featuring advanced inverter technology, a three-phase power connection, and R410A refrigerant, this system is ideal for medium to large residential buildings seeking long-term sustainability and low operating costs.
Without Built-In Boiler – Flexible System Design
This version comes without an integrated domestic hot water tank, allowing integration with custom DHW systems, buffer tanks, or solar thermal setups.
Key Features and Benefits:
✔ 12 kW Heating Capacity – Suitable for medium and large residential buildings
✔ Inverter-Driven Compressor – Accurate heat output adjustment and reduced power consumption
✔ Ground-Source Technology – Delivers stable performance all year round
✔ R410A Refrigerant – Proven, efficient, and eco-conscious
✔ Extremely Quiet – Operates below 35 dB(A), perfect for indoor installation
✔ Three-Phase Power Supply – Balanced operation and support for higher loads
✔ Compact Indoor Unit – Ideal for homes with limited outdoor space
✔ Smart Home Ready – Can be integrated into advanced energy management systems
Vitocal 300-G (12 kW) is the perfect choice for homeowners who demand maximum performance, efficiency, and whisper-quiet comfort.
Viessmann Vitocal 333-G – All-in-One Ground-Source Heat Pump with Integrated Boiler (6 kW, R410A, three-phase)
The Viessmann Vitocal 333-G (6 kW) is a compact, high-efficiency ground-to-water heat pump with a built-in domestic hot water tank, offering reliable and eco-friendly heating and hot water from a single unit. Designed for small to medium-sized homes, this all-in-one solution features quiet operation, low energy consumption, and advanced inverter technology for precise heat delivery.
Integrated Hot Water Tank and Indoor Unit
The system includes a 220-liter stainless steel DHW tank, providing a complete and space-saving heating and hot water solution – ideal for modern residential spaces.
Key Features and Benefits:
✔ 6 kW Output – Perfect for energy-efficient homes with moderate demand
✔ Built-In 220 L DHW Tank – Compact solution for hot water and heating
✔ R410A Refrigerant – Proven and durable with good thermal performance
✔ Inverter Compressor – Adjusts output based on real-time heating needs
✔ Silent Operation – Ultra-quiet ground-source system suitable for indoor installation
✔ Three-Phase Power – Supports stable and reliable operation
✔ Minimal Footprint – All-in-one unit saves space and simplifies installation
✔ Compatible with Smart Controls – Integrates with ViCare and One Base
Vitocal 333-G (6 kW) offers the ideal balance of comfort, compactness, and sustainability – all in one powerful unit.
Viessmann Vitocal 333-G – All-in-One Ground-Source Heat Pump with Integrated Boiler (12 kW, R410A, three-phase)
The Viessmann Vitocal 333-G (12 kW) is a high-capacity all-in-one ground-to-water heat pump designed for medium to large residential buildings. It features a built-in 220-liter stainless steel DHW tank, providing reliable space heating and domestic hot water in one compact unit. Powered by a three-phase inverter compressor and using R410A refrigerant, it ensures efficient, quiet, and sustainable operation.
Complete Indoor System with Integrated Boiler
Combining space-saving design with premium performance, the 333-G is ideal for homes that demand powerful heating with a minimal footprint.
Key Features and Benefits:
✔ 12 kW Heating Output – Ideal for medium and larger homes
✔ Built-In 220 L DHW Tank – Seamless hot water and heating from one system
✔ R410A Refrigerant – Proven efficiency and reliability
✔ Inverter Technology – Optimizes energy use based on demand
✔ Three-Phase Power Supply – Supports consistent, high-output operation
✔ Quiet Indoor Installation – No outdoor unit required
✔ Compact, All-in-One Design – Saves valuable space
✔ Smart Home Integration – Compatible with ViCare and One Base
Vitocal 333-G (12 kW) is the perfect solution for those looking for maximum heating performance and convenience in a compact, future-proof system.
Viessmann Vitocal 300-G – Premium Ground-Source Heat Pump (16 kW, three-phase, without boiler)
The Viessmann Vitocal 300-G (16 kW) is a premium ground-to-water heat pump built for high-efficiency heating in larger residential buildings. With its inverter-driven compressor, three-phase power supply, and R410A refrigerant, it offers exceptional thermal performance, silent operation, and precision control – making it ideal for homes with higher energy demands.
Without Integrated DHW Tank – Flexible for Custom Systems
Delivered without a built-in domestic hot water tank, this model offers easy integration with buffer tanks, solar thermal systems, or bespoke hot water configurations.
Key Features and Benefits:
✔ 16 kW Heating Capacity – Suited for large homes and multi-family residences
✔ Inverter Compressor – Adapts output precisely to demand for maximum efficiency
✔ Stable Ground-Source Performance – Reliable all-year heating
✔ R410A Refrigerant – Proven and energy-efficient
✔ Extremely Quiet – Ideal for indoor installation in noise-sensitive areas
✔ Three-Phase Power Supply – Consistent and robust operation
✔ Compact Indoor Unit – Saves space, requires no outdoor installation
✔ Smart Ready – Connects to ViCare and One Base smart home platforms
Vitocal 300-G (16 kW) is the perfect solution for modern buildings needing powerful, quiet, and future-proof geothermal heating.