{"id":7961,"date":"2026-09-21T16:17:23","date_gmt":"2026-09-21T08:17:23","guid":{"rendered":"https:\/\/www.china-heatpump.com\/?post_type=heatpump_faqs&p=7961"},"modified":"2026-09-21T16:31:38","modified_gmt":"2026-09-21T08:31:38","slug":"faq-of-installation-power-winter-protection","status":"publish","type":"heatpump_faqs","link":"https:\/\/www.china-heatpump.com\/nl\/heatpump_faqs\/faq-of-installation-power-winter-protection\/","title":{"rendered":"FAQ of Installation, Power & Winter Protection"},"content":{"rendered":"
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Q: What power supply \/ voltage do Kolant heat pumps support?<\/strong>
A: Smaller units support 230V single phase. Larger commercial models use 400V three phase. We will confirm power requirement during quotation.<\/p>

Q: How much noise do your outdoor units produce? Any night silent mode?<\/strong>
A: Noise level ranges from 52~62dB at 1m. Night silent mode reduces fan & compressor speed to meet residential noise limits at night.<\/p>

Q: Does the existing gas boiler \/ old heating system work with your heat pump?<\/strong>
A: It can be retrofitted. We may need buffer tank, hydraulic separator or radiator replacement depending on original system condition.<\/p>

Q: Do I need a buffer tank or hot water cylinder for air-to-water heat pump?<\/strong>
A: Buffer tank is recommended for small heating systems to avoid frequent compressor on\/off. Hot water cylinder is required if you need domestic hot water.<\/p>

Q: How to prevent heat pump water system from freezing in winter<\/strong>?
A: Units have built-in automatic anti-freeze function. For cold areas, add proper antifreeze in water loop. Power failure is the main freezing risk.<\/p>

Q: Can I use antifreeze liquid inside the water loop? Which type should I choose?<\/strong>
A: Propylene glycol is recommended for residential use. Avoid unsuitable industrial antifreeze; follow correct mixing ratio according to local minimum temperature.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"featured_media":0,"template":"","meta":{"site-sidebar-layout":"no-sidebar","site-content-layout":"","ast-site-content-layout":"full-width-container","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":"disabled","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":"default","ast-page-background-enabled":"default","ast-page-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":"","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-4)","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-4)","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-4)","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":""}}},"categories":[],"faqcat":[397],"class_list":["post-7961","heatpump_faqs","type-heatpump_faqs","status-publish","hentry","faqcat-heat-pump-faqs"],"_links":{"self":[{"href":"https:\/\/www.china-heatpump.com\/nl\/wp-json\/wp\/v2\/heatpump_faqs\/7961","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.china-heatpump.com\/nl\/wp-json\/wp\/v2\/heatpump_faqs"}],"about":[{"href":"https:\/\/www.china-heatpump.com\/nl\/wp-json\/wp\/v2\/types\/heatpump_faqs"}],"version-history":[{"count":6,"href":"https:\/\/www.china-heatpump.com\/nl\/wp-json\/wp\/v2\/heatpump_faqs\/7961\/revisions"}],"predecessor-version":[{"id":7967,"href":"https:\/\/www.china-heatpump.com\/nl\/wp-json\/wp\/v2\/heatpump_faqs\/7961\/revisions\/7967"}],"wp:attachment":[{"href":"https:\/\/www.china-heatpump.com\/nl\/wp-json\/wp\/v2\/media?parent=7961"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.china-heatpump.com\/nl\/wp-json\/wp\/v2\/categories?post=7961"},{"taxonomy":"faqcat","embeddable":true,"href":"https:\/\/www.china-heatpump.com\/nl\/wp-json\/wp\/v2\/faqcat?post=7961"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}