Geothermal solutions are finding increasingly relevant applications in residential buildings. The company “Geotron” has many years of specialization in this field and offers innovative solutions that address key challenges in the investment process. In the following lines, we will explore the main advantages of geothermal systems for investors, builders, and end clients.
Key Challenges and Solutions
The implementation of modern geothermal solutions for multi-family residential buildings addresses several key challenges:
How can the investor build the most efficient building without increasing the HVAC budget?
How can the end user obtain a sustainable, comfortable, and efficient home with low monthly bills for heating, cooling, and hot water?
How to avoid being part of a building with heat metering and contact with neighbors, while simultaneously reducing fees?
Decentralized low-temperature geothermal heating for multi-family residential buildings is implemented through low-temperature closed-loop geothermal boreholes at depths of 100 to 150 meters, which are connected to a common geothermal collector. This setup provides the power for decentralized, individually installed water-to-water geothermal heat pump units in each apartment.
Key Advantages for Investors and Builders
Geothermal systems provide a top-class solution for individual geothermal heating and cooling of each apartment at an investment cost of approximately 90 euros/m² excluding VAT, based on the heated area. They include a geothermal system of low-temperature boreholes, a geothermal collector with a pumping group, a vertical geothermal riser, underfloor heating and cooling with a 12 cm spacing, individual controllers, preparation for fan coil units from the collector box, and preparation for the installation of an individual water-to-water geothermal heat pump.
iciency of Low-Temperature Geothermal Systems
The implementation of low-temperature geothermal projects results in a steady and predictable energy consumption during both winter and summer seasons, reducing the need for cold reserves. Geothermal heat pumps are twice as efficient as air-source heat pumps, which leads to half the reserved capacity required in the project's electrical substations.
Amenities for the End Customer
Geothermal solutions allow the installation of an individual water-to-water geothermal heat pump with a boiler in each apartment, offering the option to use the existing underfloor heating or to install fan coil units. The geothermal system provides independence, a high level of comfort, and low monthly bills for heating, cooling, and hot water—around 0.6 BGN per square meter per month including VAT. For example, for a 100 sq.m. apartment, the average heating bill is 60 BGN. Choosing a residential building equipped with a decentralized geothermal system guarantees monthly and annual savings.
Architectural and Aesthetic Perspective
From an interior design perspective, there are no external units on the facade or roof, and inside, the system integrates easily into the apartment’s architecture and layout since the space required for the heat pump installation is only 1 sq.m. There is no external noise, which is essential for maintaining a high standard in the building’s design.
Care for the Urban Environment
Encouraging buildings with low-temperature geothermal systems improves the city’s environmental quality, as these systems save harmful emissions, reduce dust, and lower noise pollution. Water-to-water geothermal heat pumps have twice the operational lifespan compared to air-source heat pumps and air conditioners, use fewer materials, and generate less waste.
Geothermal solutions for multi-family residential buildings offer numerous advantages for all participants in the investment process. They provide efficiency, comfort, and sustainability while simultaneously improving quality of life and environmental care.
