{"id":26824,"date":"2026-09-15T10:44:37","date_gmt":"2026-09-15T08:44:37","guid":{"rendered":"https:\/\/varmeco.de\/?p=26824"},"modified":"2026-09-15T11:01:16","modified_gmt":"2026-09-15T09:01:16","slug":"altbau-effizient-heizen-mit-waermepumpe-und-exergiemaschine","status":"publish","type":"post","link":"https:\/\/varmeco.de\/en\/altbau-effizient-heizen-mit-waermepumpe-und-exergiemaschine\/","title":{"rendered":"Heating old buildings efficiently with a heat pump and eXergiemaschine"},"content":{"rendered":"
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Heating old buildings efficiently with a heat pump and eXergiemaschine<\/h1>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Climate-friendly heat supply without additional costs for residents<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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With the residential complex in Bernsdorf, Velero Immobilien GmbH and Contractor Enloc Construct demonstrate how older buildings can be cost-effectively converted to climate-friendly heat supply using a hybrid heating system and booster heat pumps. For this project, two eXm max units (eXergiemaschine with 100 kW thermal output) were installed as booster heat pumps in residential construction for the first time.<\/p>

Location:<\/strong> Bernsdorf in Upper Lusatia<\/p>

Object:<\/strong> 4 old buildings in prefabricated concrete construction, 178 apartments, 8100 m\u00b2 living space; heat supply via contracting by Enloc Construct<\/p>

Challenge:<\/strong> The prefabricated housing estates should be converted from natural gas heating to a climate-neutral and future-proof heating technology without insulation measures on the buildings, which does not entail any additional costs for the tenants.<\/p>

Solution:<\/strong> The contractor has implemented a hybrid system featuring air-water heat pumps, geothermal energy, and booster heat pumps. The air-water heat pumps operate as the primary heat pump at outdoor temperatures of approximately 5 to 18 \u00b0C, while the geothermal heat pumps run primarily during the cold season. All heat pumps deliver heat at a low temperature level of approx. 35 \u00b0C with a good COP. Four booster heat pumps, including 2 eXm max units, boost the temperature for high-temperature heating circuits and domestic hot water heaters.<\/p>

How eXm. works: <\/strong>The eXergiemaschinen use energy from low-temperature storage units as a source, raise the temperature level to approx. 65 \u00b0C, and thus charge high-temperature storage units. These HT storage units can be used to supply HT heating circuits and domestic hot water systems.<\/p>

Result: <\/strong>Instead of the fossil fuel natural gas, green electricity is now used, meaning the heating technology operates in a climate-neutral manner. Thanks to the high efficiency of the heat pumps and booster heat pumps, the heat contracting results in no additional costs for the tenants. Continuous monitoring by the contractor will ensure efficient operation\u2014an important contribution to low heating costs.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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I'm detailed technical contribution<\/a> Learn how the heating system renovation was implemented and what role the new 100 kW eXm-max plays in it.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Read the complete article \"Altbau-Wohnquartier energieeffizient heizen mit W\u00e4rmepumpe und eXergiemaschine\" on our eXm page now!<\/a><\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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\n\t\t\t\t\t\tAre you interested in a eXergiemaschine?\t\t\t\t\t<\/h2>\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t
\n\t\t\t\t\t\tFeel free to contact us!\t\t\t\t\t<\/div>\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t
\n\t\t\t\t\t\n\t\t\t\t\t\tClick here\t\t\t\t\t<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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\n\t\t\t\t\t\teXergiemaschine eXm Special Page\t\t\t\t\t<\/h2>\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t
\n\t\t\t\t\t\tHow can climate-friendly heating modernization be achieved in an uninsulated old building? Learn how heat pumps and eXergiemaschinen are combined for an efficient heat supply in the Bernsdorf residential district.\t\t\t\t\t<\/div>\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t
\n\t\t\t\t\t\n\t\t\t\t\t\teXergiemaschine eXm Special Page\t\t\t\t\t<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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\n\t\t\t\t<\/i>Prev<\/span><\/span>Previous page<\/span><\/span><\/a>\t\t\t<\/div>\n\t\t\t\t\t\t\t
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Altbau effizient heizen mit W\u00e4rmepumpe und eXergiemaschine Klimafreundliche W\u00e4rmeversorgung ohne Mehrkosten f\u00fcr die Bewohner Mit der Wohnanlage in Bernsdorf zeigen […]<\/p>\n","protected":false},"author":10,"featured_media":26948,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[1],"tags":[],"post_folder":[],"class_list":["post-26824","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-allgemein"],"acf":[],"permalink_manager":null,"_links":{"self":[{"href":"https:\/\/varmeco.de\/en\/wp-json\/wp\/v2\/posts\/26824","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/varmeco.de\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/varmeco.de\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/varmeco.de\/en\/wp-json\/wp\/v2\/users\/10"}],"replies":[{"embeddable":true,"href":"https:\/\/varmeco.de\/en\/wp-json\/wp\/v2\/comments?post=26824"}],"version-history":[{"count":13,"href":"https:\/\/varmeco.de\/en\/wp-json\/wp\/v2\/posts\/26824\/revisions"}],"predecessor-version":[{"id":26947,"href":"https:\/\/varmeco.de\/en\/wp-json\/wp\/v2\/posts\/26824\/revisions\/26947"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/varmeco.de\/en\/wp-json\/wp\/v2\/media\/26948"}],"wp:attachment":[{"href":"https:\/\/varmeco.de\/en\/wp-json\/wp\/v2\/media?parent=26824"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/varmeco.de\/en\/wp-json\/wp\/v2\/categories?post=26824"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/varmeco.de\/en\/wp-json\/wp\/v2\/tags?post=26824"},{"taxonomy":"post_folder","embeddable":true,"href":"https:\/\/varmeco.de\/en\/wp-json\/wp\/v2\/post_folder?post=26824"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}