{"id":18921,"date":"2024-01-26T12:00:46","date_gmt":"2024-01-26T17:00:46","guid":{"rendered":"https:\/\/www.techwalls.com\/?p=18921"},"modified":"2024-01-26T13:14:10","modified_gmt":"2024-01-26T18:14:10","slug":"mrcool-heat-pump-performs-under-10-degrees-cold-weather","status":"publish","type":"post","link":"https:\/\/www.techwalls.com\/mrcool-heat-pump-performs-under-10-degrees-cold-weather\/","title":{"rendered":"Can MrCool Heat Pump Work Under 10\u00baF (-12.22\u00baC) Cold Weather?"},"content":{"rendered":"\n<p>A week ago, the North East experienced heavy snow storm and dangerously cold temperature of around 10\u00baF; It even dropped to 0\u00baF with wind chills at my place. That was a good chance for me to test the capability of the MrCool heat pump that I installed earlier. I <a href=\"https:\/\/www.techwalls.com\/mrcool-diy-multi-zone-heat-pump-cost-installation-time\/\">installed a 3-ton 4-zone MrCool heat pump system<\/a> for my house with 4 air-handlers placed in 4 different rooms, all is connected to an outdoor unit that extracts heat from the outside. Let&#8217;s check out the performance in each room.<\/p>\n\n\n\n<!--more-->\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"Can MrCool Heat Pump Work Under 10\u00baF (-12.22\u00baC) Cold Weather?\" width=\"1000\" height=\"563\" src=\"https:\/\/www.youtube.com\/embed\/53nkv4XuQb0?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<p>The living room is the toughest one because it is the largest room and opens to other spaces. I set the temperature at 76\u00baF, the air-handler keeps blowing out warm air but the room temperature could reach just around 56\u00baF. This is pretty low but totally in my expectation because the room is not well insulated with drafty windows and door. To make the room warmer, I often have to use another space heater as a supplement heating source.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><a href=\"https:\/\/www.techwalls.com\/wp-content\/uploads\/2024\/01\/temperature.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"1265\" src=\"https:\/\/www.techwalls.com\/wp-content\/uploads\/2024\/01\/temperature.jpg\" alt=\"\" class=\"wp-image-18922\" style=\"width:595px;height:auto\" srcset=\"https:\/\/www.techwalls.com\/wp-content\/uploads\/2024\/01\/temperature.jpg 1000w, https:\/\/www.techwalls.com\/wp-content\/uploads\/2024\/01\/temperature-237x300.jpg 237w, https:\/\/www.techwalls.com\/wp-content\/uploads\/2024\/01\/temperature-809x1024.jpg 809w, https:\/\/www.techwalls.com\/wp-content\/uploads\/2024\/01\/temperature-768x972.jpg 768w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><\/a><figcaption class=\"wp-element-caption\">Outdoor temperature<\/figcaption><\/figure><\/div>\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/www.techwalls.com\/wp-content\/uploads\/2024\/01\/mrcool1.jpeg\"><img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"774\" src=\"https:\/\/www.techwalls.com\/wp-content\/uploads\/2024\/01\/mrcool1.jpeg\" alt=\"\" class=\"wp-image-18923\" srcset=\"https:\/\/www.techwalls.com\/wp-content\/uploads\/2024\/01\/mrcool1.jpeg 1200w, https:\/\/www.techwalls.com\/wp-content\/uploads\/2024\/01\/mrcool1-300x194.jpeg 300w, https:\/\/www.techwalls.com\/wp-content\/uploads\/2024\/01\/mrcool1-1024x660.jpeg 1024w, https:\/\/www.techwalls.com\/wp-content\/uploads\/2024\/01\/mrcool1-768x495.jpeg 768w\" sizes=\"auto, (max-width: 1200px) 100vw, 1200px\" \/><\/a><\/figure>\n\n\n\n<p>Move on to the next room which is smaller and has less windows. I set the temperature at 74\u00baF and now my thermostat shows over 56\u00baF. Then in my bedroom which is insulated way better, the room temperature reaches 61\u00baF when I set the air-handler at 62\u00baF. The room actually becomes really hot and I can&#8217;t set the heat pump at a lower temperature because 62\u00baF is the minimum in heating mode. In another bedroom, I also set it at 62\u00baF and the room temperature is around 59\u00baF.<\/p>\n\n\n\n<p>Overall, I am really satisfied with performance of the MrCool heatpump, especially in my 2 bedrooms. This was tested on the coldest days in the winter and the efficiency might decrease during this period. However, the heatpump doesn&#8217;t seem to struggle as it gets to the Defrost mode just once every 1-2 hours. You can watch my another video to <a href=\"https:\/\/www.techwalls.com\/heat-pump-defrost-mode-problem-how-to-avoid-it\/\">understand the Defrost mode<\/a> and should you worry about it.<\/p>\n\n\n\n<p>I will change my old windows and doors in the Spring and I believe the warm air won&#8217;t be leaked out as it is right now. Then I believe even my large living room can get cozy and toasty even without additional heating sources. And most importantly, I can save significantly on my energy bills.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>A week ago, the North East experienced heavy snow storm and dangerously cold temperature of around 10\u00baF; It even dropped to 0\u00baF with wind chills at my place. That was a good chance for me to test the capability of the MrCool heat pump that I installed earlier. I installed a 3-ton 4-zone MrCool heat [&hellip;]<\/p>\n","protected":false},"author":42,"featured_media":18923,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_genesis_hide_title":false,"_genesis_hide_breadcrumbs":false,"_genesis_hide_singular_image":false,"_genesis_hide_footer_widgets":false,"_genesis_custom_body_class":"","_genesis_custom_post_class":"","_genesis_layout":"","footnotes":""},"categories":[2460],"tags":[1482],"class_list":{"0":"post-18921","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-home","8":"tag-home","9":"entry"},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.9 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Can MrCool Heat Pump Work Under 10\u00baF (-12.22\u00baC) Cold Weather? - TechWalls<\/title>\n<meta name=\"description\" content=\"Temperature even dropped to 0\u00baF with wind chills at my place. 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