{"id":454,"date":"2019-01-29T07:31:17","date_gmt":"2019-01-29T07:31:17","guid":{"rendered":"https:\/\/heatpumpingtechnologies.org\/annex62\/?page_id=454"},"modified":"2025-07-09T08:38:49","modified_gmt":"2025-07-09T08:38:49","slug":"daru","status":"publish","type":"case_studies","link":"https:\/\/heatpumpingtechnologies.org\/project62\/case-studies\/daru\/","title":{"rendered":"Daru"},"content":{"rendered":"
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This project concerns the replacement of an existing gas heating system by a hybrid HP+gas solution in an existing multifamily building. With the goal of having the maximum annual heat production from HP origin, six air\/water heat pumps were implemented on the rooftop. One of the previous gas boilers was kept for the peak loads in winter.<\/p>\n<\/div>\n\n

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The existing MFH (multi-family building), built in 1992 in Geneva, contains 68 apartments, within 4 floors, plus commercial establishments on the ground floor (restaurant, bakery, \u2026). It suffered no major envelope retrofit before this project and the total gas consumption amounted to 1\u2019000 MWh\/yr (for space heating and domestic hot water of 7\u2019563m\u00b2). (Photo credit SIG, CSD Ing\u00e9nieurs SA)<\/p>\n<\/div>\n\n

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Lessons learned<\/strong><\/span><\/h2>\n<\/div>\n\n
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Ongoing monitoring, but so far:<\/p>\n<\/div>\n\n

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