1 December 2026
Brussels, Belgium
#HPForum 2026
Award Ceremony
1 December 2026
SQUARE Brussels
DecarbBuilding winner

HAPPENING – HeAt PumPs in existing multi-family buildings for achieving union’s ENergy and envIroNmental Goals – Demo case in PASAIA

Projects details:
Location: Pasaia, Spain
Year of Submission: 2024
Type of HP: Heat pump cascade
Funding from: EU funds
Sector of application: Residential

HAPPENING is a project which aims at enabling the efficient use of heat pumps in retrofitting of existing multifamily buildings. To do so, a cascade heat pump (HP) system is proposed, splitting the heat generation in two levels (combining central and individual HPs), which offers many benefits in terms of performance and adaptability.

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