{"id":3545,"date":"2026-03-17T11:33:10","date_gmt":"2026-03-17T11:33:10","guid":{"rendered":"https:\/\/heatpumpingtechnologies.org\/project62\/?post_type=case_studies&p=3545"},"modified":"2026-03-17T11:33:10","modified_gmt":"2026-03-17T11:33:10","slug":"ch007-bivalent-heat-pumps-switzerland","status":"publish","type":"case_studies","link":"https:\/\/heatpumpingtechnologies.org\/project62\/case-studies\/ch007-bivalent-heat-pumps-switzerland\/","title":{"rendered":"CH007 Bivalent Heat Pumps, Switzerland"},"content":{"rendered":"
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The heating system in this multi-family housing estate was completely exchanged.<\/p>\n<\/div>\n\n

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In 2001, the whole heating system of the multi-family housing settlement in the quarter of Oberstrass in Zurich from 1928 was
renovated. Instead of simply exchanging the burners, a bivalent heating syste, was installed: Now a air\/water heat pump provides
roughly half of the heat demand for Space Heating and Domestic Hot Water.<\/p>\n<\/div>\n\n

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During the summer, the heat pump manages to provide all of the Domestic Hot Water demand; during the winter there is an additional gas boiler running. In addition to external air, residual heat from exhaust fumes is used as a heat source.<\/p>\n<\/div>\n\n

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Key Facts<\/strong><\/p>\n<\/div>\n\n

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Building<\/strong><\/td><\/td>Heat Pump and Source<\/strong><\/td><\/td><\/tr>
Location<\/td>Zurich, Switzerland<\/td>Hear demand for the whole urban settlement<\/td>985 MWh\/a<\/td><\/tr>
Construction<\/td>1928<\/td>Heating temperature<\/td>–<\/td><\/tr>
Renovation<\/td>2001<\/td><\/td><\/td><\/tr>
Project type<\/td>retrofit<\/td><\/td><\/td><\/tr>
Heat distribution<\/td>–<\/td><\/td><\/td><\/tr>
Heated space<\/td>–<\/td><\/td><\/td><\/tr>
No. of apartments<\/td>12 MFHs with 82 dwellings<\/td><\/td><\/td><\/tr>
Level of insulation<\/td>–<\/td><\/td><\/td><\/tr>
<\/td><\/td><\/td><\/td><\/tr>
Domestic Hot Water<\/strong><\/td><\/td>Other Information<\/strong><\/td><\/td><\/tr>
Coefficient of Performance<\/td>–<\/td>Type of system<\/td>mix<\/td><\/tr>
Refrigerant<\/td>–<\/td>Max. temperature<\/td>–<\/td><\/tr>
Gas boiler<\/td>300kW<\/td><\/td><\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n\n
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\"\"<\/a><\/figure>\n<\/div>\n\n
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Case study delivered by: energie Schweiz<\/em><\/p>\n<\/div>\n\n

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<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"

The heating system in this multi-family housing estate was completely exchanged. In 2001, the whole heating system of the multi-family…<\/p>\n","protected":false},"author":69,"featured_media":0,"menu_order":0,"template":"","filters":[],"markets":[],"applications":[],"class_list":["post-3545","case_studies","type-case_studies","status-publish","hentry"],"acf":[],"_links":{"self":[{"href":"https:\/\/heatpumpingtechnologies.org\/project62\/wp-json\/wp\/v2\/case_studies\/3545","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/heatpumpingtechnologies.org\/project62\/wp-json\/wp\/v2\/case_studies"}],"about":[{"href":"https:\/\/heatpumpingtechnologies.org\/project62\/wp-json\/wp\/v2\/types\/case_studies"}],"author":[{"embeddable":true,"href":"https:\/\/heatpumpingtechnologies.org\/project62\/wp-json\/wp\/v2\/users\/69"}],"version-history":[{"count":1,"href":"https:\/\/heatpumpingtechnologies.org\/project62\/wp-json\/wp\/v2\/case_studies\/3545\/revisions"}],"predecessor-version":[{"id":3548,"href":"https:\/\/heatpumpingtechnologies.org\/project62\/wp-json\/wp\/v2\/case_studies\/3545\/revisions\/3548"}],"wp:attachment":[{"href":"https:\/\/heatpumpingtechnologies.org\/project62\/wp-json\/wp\/v2\/media?parent=3545"}],"wp:term":[{"taxonomy":"filters","embeddable":true,"href":"https:\/\/heatpumpingtechnologies.org\/project62\/wp-json\/wp\/v2\/filters?post=3545"},{"taxonomy":"markets","embeddable":true,"href":"https:\/\/heatpumpingtechnologies.org\/project62\/wp-json\/wp\/v2\/markets?post=3545"},{"taxonomy":"applications","embeddable":true,"href":"https:\/\/heatpumpingtechnologies.org\/project62\/wp-json\/wp\/v2\/applications?post=3545"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}