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Today’s heat pumps, in the specific context of collective buildings, allow reducing energy costs, minimizing environmental impact, and promoting a more responsible and environmentally friendly approach to thermal management of shared spaces. This technology not only efficiently heats the interior space but also provides domestic hot water, contributing to the overall versatility and profitability of the systems.
A high-temperature heat pump is an Air-Water HP that raises the temperature of the water feeding the heating circuit to 75°C, compared to 45°C for a so-called low-temperature HP. They are also capable of operating when outdoor temperatures are very low (down to -20°C).
The high-temperature HP is designed to work with old radiators such as cast iron ones. It is therefore particularly suitable for renovation projects. Its high energy efficiency allows it to effectively heat an old house whose insulation is not optimal.
Collective buildings generally represent large areas to heat but also very significant domestic hot water needs. Heat pumps can be mounted in cascade up to 9 units and can then meet needs up to 540kW! It is also possible to hybridize geothermal and aerothermal HPs and combine different powers to perfectly meet the building’s necessary requirements.
These cascade systems are systematically integrated into studies for the construction of new buildings, and geothermal energy is becoming a solution that is gaining ground among developers and design offices. Although drilling costs are significant, the return on investment for future owners is substantial as they will be able to benefit from a cheap energy source, with an excellent COP, and comfort throughout the year, as this technology allows passive cooling (via underfloor heating or fan coil units), making it eligible for the Luxembourg Energy Pass.
We have talked about HP cascades in the context of new projects, but with the high-temperature systems of the new Heat Pumps, the integration of a cascade to obtain more power and thus cover the heating and domestic hot water needs for residences is perfectly achievable. Installing a cascade heat pump system represents a significant investment, however, state subsidies allow for a very interesting remaining cost when compared to heating bill savings. Indeed, on average, gas or oil bills will be halved and thus the profitability of the installation also reaches an average of 5 years.
Even more so when considering that the state’s “tariff shield” on gas will expire in 2024 and gas prices will then be doubled!
Discover below a concrete example of a profitability calculation for a residence with 4 apartments housing 12 occupants who needed to replace an old oil boiler. The amortization of the cascade of the 2 necessary heat pumps will be achieved in 3.10 years.
We have been installing High Temperature Heat Pumps in private homes and collective buildings for several years. With our experience in heating since 2002, we have trained our teams in these new technologies and rely on the expertise of a leading manufacturer in heat pumps for 40 years.
With our service, you are assured of a sizing that perfectly matches your needs (based on previous consumption, building losses, etc.), an installation by experts with attention to all details and in accordance with best practices, commissioning ensured by the manufacturer for optimal safety, and an After-Sales Service integrated into our company and based in Luxembourg.
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