{"id":9289,"date":"2025-09-16T16:36:08","date_gmt":"2025-09-16T22:36:08","guid":{"rendered":"https:\/\/www.warmzone.com\/blog\/?post_type=glossary&#038;p=9289"},"modified":"2025-09-16T16:36:08","modified_gmt":"2025-09-16T22:36:08","slug":"expansion-tank","status":"publish","type":"glossary","link":"https:\/\/www.warmzone.com\/blog\/glossary\/expansion-tank\/","title":{"rendered":"Expansion Tank"},"content":{"rendered":"<p>A closed tank in a hot water system or radiant heating system that provides space for the expansion of water in the system as it is heated. The tank contains both water and air. As the water expands, the air in the tank is compressed.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>A closed tank in a hot water system or radiant heating system that provides space for the expansion of water in the system as it is heated. The tank contains both water and air. As the water expands, the air in the tank is compressed.<\/p>\n","protected":false},"author":1,"featured_media":0,"menu_order":0,"template":"","meta":{"footnotes":""},"class_list":["post-9289","glossary","type-glossary","status-publish","hentry","description-off"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.1.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Expansion Tank | Warmzone Blog<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.warmzone.com\/blog\/glossary\/expansion-tank\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Expansion Tank | Warmzone Blog\" \/>\n<meta property=\"og:description\" content=\"A closed tank in a hot water system or radiant heating system that provides space for the expansion of water in the system as it is heated. 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