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Smart building retrofitting complemented by solar assisted heat pumps integrated within a self-correcting intelligent building energy management system.

Project description

New heat pumps for efficient building retrofitting

The retrofitting of ageing buildings is crucial for improving their energy efficiency. The EU funded Heat4Cool project aims to develop, integrate and demonstrate an innovative, efficient, easy-to-install and cost-effective solution for retrofitting buildings. This solution aims to optimise the integration of a range of rehabilitation systems to meet net zero energy standards. The process begins with the implementation of the Heat4Cool advanced decision making tool, which considers factors like the building and district. It combines gas and solar thermally driven adsorption heat pumps, and a solar PV-assisted DC-powered heat pump connected to an advanced modular phase change material, PCM heat and cold storage system. The project also incorporates energy recovery from sewage water, using high-performance heat exchangers. The goal is to reduce energy consumption by 20 %.


Heat4Cool proposes an innovative, efficient and cost-effective solution to optimize the integration of a set of rehabilitation systems in order to meet the net-zero energy standards. The project develops, integrates and demonstrates an easy to install and highly energy efficient solution for building retrofitting that begins from the Heat4Cool advanced decision-making tool (which addresses the building and district characteristics) and leads to the optimal solution combining (1) gas and solar thermally driven adsorption heat pumps, which permits the full integration with existing natural gas boilers to ensure efficient use of current equipment , (2) solar PV assisted DC powered heat pump connected to an advanced modular PCM heat and cold storage system, and (3) energy recovery from sewage water with high performance heat exchangers.
This retrofitting solution together with a closer interaction between building monitoring, demand/respond supply match, weather forecast and HVAC activation/control through a Self-Correcting Intelligent Building Energy Management Systems (SCI-BEMS) will save at least 10% of energy consumption.
The project will implement four benchmark retrofitting projects in four different European climates to achieve a reduction of at least 20% in energy consumption in a technically, socially, and financially feasible manner and demonstrate a return on investment of 8 years. The Heat4Cool consortium will ensure the maximum replication potential of the Heat4Cool solution by a continuous monitoring of technical and economic barriers during the development and validation phases in order to present the building owners and investors with clear energy and economic evidence of the value of implementing Heat4Cool solution.
A detailed business plan will be developed in the beginning of the project to strengthen the exploitation plan of the retrofitting package and set the basis for a massive replication of the demonstrated concept across Europe.

Call for proposal


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Sub call



Net EU contribution
€ 790 500,00
20133 Milano

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Nord-Ovest Lombardia Milano
Activity type
Higher or Secondary Education Establishments
Total cost
€ 790 500,00

Participants (13)