{"id":1893,"date":"2025-05-19T20:48:13","date_gmt":"2025-05-19T20:48:13","guid":{"rendered":"https:\/\/kretz.cz\/produkt\/krbova-vlozka-b103-v21\/"},"modified":"2026-02-22T19:02:18","modified_gmt":"2026-02-22T19:02:18","slug":"krbova-vlozka-b103-v21","status":"publish","type":"product","link":"https:\/\/kretz.cz\/en\/product\/krbova-vlozka-b103-v21\/","title":{"rendered":"Fireplace insert B103 V21"},"content":{"rendered":"<p>\u0160pi\u010dkov\u00e1 teplovodn\u00ed krbov\u00e1 vlo\u017eka KRETZ B103 V21 p\u0159edstavuje vrchol \u0159ady s v\u00fdkonem 50 kW a objemem v\u00fdm\u011bn\u00edku 11,5 litru, schopn\u00e1 vyt\u00e1p\u011bt prostory a\u017e 630 m3. Jej\u00ed elegantn\u00ed rovn\u00e9 prosklen\u00ed skv\u011ble zapadne do modern\u00edch interi\u00e9r\u016f, zat\u00edmco \u017e\u00e1robetonov\u00e9 topeni\u0161t\u011b zaru\u010duje maxim\u00e1ln\u00ed odolnost a dlouhou \u017eivotnost. S vynikaj\u00edc\u00ed \u00fa\u010dinnost\u00ed 78% a pr\u016fm\u011brem kou\u0159ovodu 180 mm zaji\u0161\u0165uje optim\u00e1ln\u00ed tepeln\u00fd v\u00fdkon a \u010dist\u00e9 spalov\u00e1n\u00ed.<br \/>\nPractical features such as automatic glass wash and external air supply greatly simplify operation and maintenance. The robust construction, weighing 240 kg with a width of 720 mm, ensures stability and easy installation.  Although it does not include a sliding door mechanism or rear loadinbg, its high performance, elegant design, and German engineering precision place it among the top in the category of hot-water fireplace inserts.<\/p>","protected":false},"excerpt":{"rendered":"<p>The KRETZ B103 V21 water-heating fireplace insert with 50kW output can heat spaces up to 630 m\u00b3 and features flat glazing with a refractory concrete firebox - an ideal combination of performance and modern design with 78% efficiency.<\/p>","protected":false},"featured_media":3201,"template":"","meta":[],"product_brand":[100],"product_cat":[23],"product_tag":[],"class_list":{"0":"post-1893","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_brand-kretz","7":"product_cat-teplovodni","8":"pa_bezrostove-topeniste-ne","9":"pa_externi-prisavani-ano","10":"pa_objem-vodniho-vymeniku-l-205","11":"pa_ochlazovaci-smycka-ano","12":"pa_proskleni-rovne","13":"pa_regulovatelny-oplach-skla-ano","14":"pa_regulovatelny-vykon-206","15":"pa_teplovodni-vymenik-ano","16":"pa_topeniste-zarobeton","17":"pa_vykon-do-vody-115-kw","18":"pa_vytapeny-prostor-m3-207","19":"pa_zadni-prikladani-ne","20":"description-off","22":"first","23":"instock","24":"product-type-simple"},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.9 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Krbov\u00e1 vlo\u017eka B103 V21 - KRETZ.cz - krby a krbov\u00e1 kamna<\/title>\n<meta name=\"robots\" content=\"noindex, follow\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Krbov\u00e1 vlo\u017eka B103 V21 - KRETZ.cz - krby a krbov\u00e1 kamna\" \/>\n<meta property=\"og:description\" content=\"Teplovodn\u00ed krbov\u00e1 vlo\u017eka KRETZ B103 V21 s v\u00fdkonem 50 kW vytop\u00ed a\u017e 630 m3 a nab\u00edz\u00ed rovn\u00e9 prosklen\u00ed s \u017e\u00e1robetonov\u00fdm topeni\u0161t\u011bm \u2013 ide\u00e1ln\u00ed kombinace v\u00fdkonu a modern\u00edho designu s 78% \u00fa\u010dinnost\u00ed.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/kretz.cz\/en\/product\/krbova-vlozka-b103-v21\/\" \/>\n<meta property=\"og:site_name\" content=\"KRETZ.cz - krby a krbov\u00e1 kamna\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/krbykretz\/\" \/>\n<meta property=\"article:modified_time\" content=\"2026-02-22T19:02:18+00:00\" \/>\n<meta property=\"og:image\" content=\"http:\/\/kretz.cz\/wp-content\/uploads\/2025\/05\/B103_V.1.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"1200\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/kretz.cz\/produkt\/krbova-vlozka-b103-v21\/\",\"url\":\"https:\/\/kretz.cz\/produkt\/krbova-vlozka-b103-v21\/\",\"name\":\"Krbov\u00e1 vlo\u017eka B103 V21 - KRETZ.cz - krby a krbov\u00e1 kamna\",\"isPartOf\":{\"@id\":\"https:\/\/kretz.cz\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/kretz.cz\/produkt\/krbova-vlozka-b103-v21\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/kretz.cz\/produkt\/krbova-vlozka-b103-v21\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/kretz.cz\/wp-content\/uploads\/2025\/05\/B103_V.1.jpg\",\"datePublished\":\"2025-05-19T20:48:13+00:00\",\"dateModified\":\"2026-02-22T19:02:18+00:00\",\"breadcrumb\":{\"@id\":\"https:\/\/kretz.cz\/produkt\/krbova-vlozka-b103-v21\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/kretz.cz\/produkt\/krbova-vlozka-b103-v21\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/kretz.cz\/produkt\/krbova-vlozka-b103-v21\/#primaryimage\",\"url\":\"https:\/\/kretz.cz\/wp-content\/uploads\/2025\/05\/B103_V.1.jpg\",\"contentUrl\":\"https:\/\/kretz.cz\/wp-content\/uploads\/2025\/05\/B103_V.1.jpg\",\"width\":1200,\"height\":1200},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/kretz.cz\/produkt\/krbova-vlozka-b103-v21\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Dom\u016f\",\"item\":\"https:\/\/kretz.cz\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Template &#8211; 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