{"id":3399,"date":"2022-11-24T14:46:01","date_gmt":"2022-11-24T14:46:01","guid":{"rendered":"https:\/\/p69.com.vn\/?p=3399"},"modified":"2022-11-28T08:17:44","modified_gmt":"2022-11-28T08:17:44","slug":"he-thong-dieu-hoa-trung-tam","status":"publish","type":"post","link":"https:\/\/p69.com.vn\/en\/he-thong-dieu-hoa-trung-tam\/","title":{"rendered":"What is central air conditioning system? Detailed system structure"},"content":{"rendered":"<p><span style=\"vertical-align: inherit;\">What is central air conditioning system? What are the components of a central air conditioning system? Is it different from conventional air conditioning systems? All will be answered in the content of the article below of <\/span><a href=\"https:\/\/p69.com.vn\/\" target=\"_blank\" rel=\"noopener\"><strong><span style=\"vertical-align: inherit;\">the company P69<\/span><\/strong><\/a><span style=\"vertical-align: inherit;\"> , please refer to it.<\/span><\/p>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_45 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\">Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" area-label=\"ez-toc-toggle-icon-1\"><label for=\"item-69e781c040351\" aria-label=\"Table of Content\"><span style=\"display: flex;align-items: center;width: 35px;height: 30px;justify-content: center;direction:ltr;\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/label><input  type=\"checkbox\" id=\"item-69e781c040351\"><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 eztoc-visibility-hide-by-default' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/p69.com.vn\/en\/he-thong-dieu-hoa-trung-tam\/#What_is_a_central_air_conditioning_system\" title=\"What is a central air conditioning system?\">What is a central air conditioning system?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/p69.com.vn\/en\/he-thong-dieu-hoa-trung-tam\/#Construction_of_central_air_conditioning_system\" title=\"Construction of central air conditioning system\">Construction of central air conditioning system<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/p69.com.vn\/en\/he-thong-dieu-hoa-trung-tam\/#Classification_of_todays_popular_central_air_conditioning_systems\" title=\"Classification of today&#8217;s popular central air conditioning systems\">Classification of today&#8217;s popular central air conditioning systems<\/a><ul class='ez-toc-list-level-3'><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/p69.com.vn\/en\/he-thong-dieu-hoa-trung-tam\/#1_Water_cooling_system\" title=\"1. Water cooling system\">1. Water cooling system<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/p69.com.vn\/en\/he-thong-dieu-hoa-trung-tam\/#2_Air_cooling_system\" title=\"2. Air cooling system\">2. Air cooling system<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/p69.com.vn\/en\/he-thong-dieu-hoa-trung-tam\/#Working_principle_of_central_air_conditioning_system\" title=\"Working principle of central air conditioning system\">Working principle of central air conditioning system<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/p69.com.vn\/en\/he-thong-dieu-hoa-trung-tam\/#Advantages_and_disadvantages_of_central_air_conditioning\" title=\"Advantages and disadvantages of central air conditioning\">Advantages and disadvantages of central air conditioning<\/a><ul class='ez-toc-list-level-3'><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/p69.com.vn\/en\/he-thong-dieu-hoa-trung-tam\/#1_Advantages\" title=\"1. Advantages\">1. Advantages<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/p69.com.vn\/en\/he-thong-dieu-hoa-trung-tam\/#2_Disadvantages\" title=\"2. Disadvantages\">2. Disadvantages<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/p69.com.vn\/en\/he-thong-dieu-hoa-trung-tam\/#Contact_information_P69_-_M_E_Contractor\" title=\"Contact information P69 \u2013 M&amp;E Contractor\">Contact information P69 \u2013 M&amp;E Contractor<\/a><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"What_is_a_central_air_conditioning_system\"><\/span><span id=\"he-thong-dieu-hoa-trung-tam-la-gi\"><span style=\"vertical-align: inherit;\">What is a central air conditioning system?<\/span><\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"vertical-align: inherit;\">Central air conditioning system is a system consisting of one or more central machines that combine to form an overall cold distribution system for all areas in the building. The central air conditioning system uses water as the cooling agent through the pipeline system leading to the heat exchangers to cool the air.<\/span><\/p>\n<figure id=\"attachment_3416\" aria-describedby=\"caption-attachment-3416\" style=\"width: 850px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-3416 size-full\" title=\"What is a central air conditioning system?\" src=\"https:\/\/p69.com.vn\/wp-content\/uploads\/2022\/11\/Capture-15.jpg\" alt=\"What is a central air conditioning system?\" width=\"850\" height=\"450\" srcset=\"https:\/\/p69.com.vn\/wp-content\/uploads\/2022\/11\/Capture-15.jpg 850w, https:\/\/p69.com.vn\/wp-content\/uploads\/2022\/11\/Capture-15-300x159.jpg 300w, https:\/\/p69.com.vn\/wp-content\/uploads\/2022\/11\/Capture-15-768x407.jpg 768w, https:\/\/p69.com.vn\/wp-content\/uploads\/2022\/11\/Capture-15-600x318.jpg 600w\" sizes=\"auto, (max-width: 850px) 100vw, 850px\" \/><figcaption id=\"caption-attachment-3416\" class=\"wp-caption-text\"><em><span style=\"vertical-align: inherit;\">What is a central air conditioning system?<\/span><\/em><\/figcaption><\/figure>\n<h2><span class=\"ez-toc-section\" id=\"Construction_of_central_air_conditioning_system\"><\/span><span id=\"Cau_tao_he_thong_dieu_hoa_trung_tam\"><span style=\"vertical-align: inherit;\">Construction of central air conditioning system<\/span><\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"vertical-align: inherit;\">&#8211; Central air conditioner (CHILLER): A device that produces cold water through the pipeline system to supply heat exchangers installed in air-conditioned spaces to cool the air.<\/span><\/p>\n<p><span style=\"vertical-align: inherit;\">&#8211; Heat exchanger units (FAN COIL UNITs &#8211; FCUs): Are devices located in areas that need air conditioning (the capacity of heat exchangers is selected based on the required cooling capacity of the room that other types are installed. each other), where cold water from the air conditioner passes through the indoor unit to exchange heat with the room air and perform the cooling function.<\/span><\/p>\n<p><span style=\"vertical-align: inherit;\">&#8211; Cooling tower and water pump: perform the function of releasing heat energy of the condenser (air conditioner) after the air conditioner performs the work of cooling the water in the evaporator.<\/span><\/p>\n<p><span style=\"vertical-align: inherit;\">&#8211; Pipeline and cold water pump system: It is a cold water distribution system from the central air conditioner to the FCU heat exchangers.<\/span><\/p>\n<p><span style=\"vertical-align: inherit;\">&#8211; Cold air distribution piping system: It is a system that distributes cold air from FCUs through blowers to areas that need air conditioning.<\/span><\/p>\n<p><span style=\"vertical-align: inherit;\">&#8211; Electrical control system: Is a control system that interlocks the equipment in the system (air conditioner, FCU, water pump and cooling tower)<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Classification_of_todays_popular_central_air_conditioning_systems\"><\/span><span id=\"Phan_loai_he_thong_dieu_hoa_trung_tam\"><span style=\"vertical-align: inherit;\">Classification of today&#8217;s popular central air conditioning systems<\/span><\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"vertical-align: inherit;\">Currently, in the field of air conditioning, there are quite a few systems used for buildings with different uses and different architectural characteristics.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"1_Water_cooling_system\"><\/span><span id=\"He_thong_lam_lanh_bang_nuoc\"><span style=\"vertical-align: inherit;\">1. Water cooling system<\/span><\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li><span style=\"vertical-align: inherit;\">Water-cooled system, water-cooled condenser.<\/span><\/li>\n<li><span style=\"vertical-align: inherit;\">Water cooling system, condenser cooling by wind.<\/span><\/li>\n<\/ul>\n<p><span style=\"vertical-align: inherit;\">This system includes main equipment such as: central air conditioners, heat exchangers, condenser cooling devices, water pumps, &#8230;<\/span><\/p>\n<p><span style=\"vertical-align: inherit;\">Cold water produced at central air conditioners is supplied to heat exchangers located in air-conditioned spaces. Here, water acts as a heat exchanger, carrying out the process of receiving heat from the environment in the room, reducing (increasing) the temperature and humidity in the room. After completing this process, the water is recirculated to the central air conditioner and continues a new cycle.<\/span><\/p>\n<p><span style=\"vertical-align: inherit;\">This system is suitable for the air conditioning requirements for different spaces with different temperature &#8211; humidity regimes (in each separate space we can choose a desired temperature &#8211; humidity depending on on how to control that space)<\/span><\/p>\n<p><span style=\"vertical-align: inherit;\">The installation space requirements for this system are not very high. The distance between the false ceiling and the bottom of the beam is about 100 &#8211; 200 mm is possible.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"2_Air_cooling_system\"><\/span><span id=\"He_thong_lam_lanh_bang_gio\"><span style=\"vertical-align: inherit;\">2. Air cooling system<\/span><\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li><span style=\"vertical-align: inherit;\">Air-cooled system, water-cooled condenser.<\/span><\/li>\n<li><span style=\"vertical-align: inherit;\">Air cooling system, condenser cooling by air<\/span><\/li>\n<\/ul>\n<p><span style=\"vertical-align: inherit;\">In this system, there are main equipment such as: central air conditioner, cold wind distribution and distribution channels, condenser cooling device&#8230;<\/span><\/p>\n<p><span style=\"vertical-align: inherit;\">Unlike the first system, in this system, the central air conditioner produces cold wind and supplies it to the conditioned spaces through the air ducts. Here, cold wind acts as a heat exchanger, carrying out the process of receiving heat from the environment in the room, reducing (increasing) the temperature and humidity in the room. After this process is done, the cold wind is recirculated to the central air conditioner through another wind channel (or directly returned to the engine room) and continues a new cycle.<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Working_principle_of_central_air_conditioning_system\"><\/span><span style=\"vertical-align: inherit;\">Working principle of central air conditioning system<\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"vertical-align: inherit;\">The operation of the air conditioning system through the outdoor unit, the indoor unit and the refrigerant. The principle of operation of central air conditioner, basically will be:<\/span><\/p>\n<figure id=\"attachment_3415\" aria-describedby=\"caption-attachment-3415\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-3415 size-full\" title=\"Working principle diagram of central air conditioning system\" src=\"https:\/\/p69.com.vn\/wp-content\/uploads\/2022\/11\/dieu-hoa-khong-khi-trung-tam-4.jpg\" alt=\"Working principle diagram of central air conditioning system\" width=\"800\" height=\"500\" srcset=\"https:\/\/p69.com.vn\/wp-content\/uploads\/2022\/11\/dieu-hoa-khong-khi-trung-tam-4.jpg 800w, https:\/\/p69.com.vn\/wp-content\/uploads\/2022\/11\/dieu-hoa-khong-khi-trung-tam-4-300x188.jpg 300w, https:\/\/p69.com.vn\/wp-content\/uploads\/2022\/11\/dieu-hoa-khong-khi-trung-tam-4-768x480.jpg 768w, https:\/\/p69.com.vn\/wp-content\/uploads\/2022\/11\/dieu-hoa-khong-khi-trung-tam-4-600x375.jpg 600w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-3415\" class=\"wp-caption-text\"><em><span style=\"vertical-align: inherit;\">Working principle diagram of central air conditioning system<\/span><\/em><\/figcaption><\/figure>\n<p><span style=\"vertical-align: inherit;\">\u2013 The indoor unit operates continuously to provide fresh air and air conditioning in the room.<\/span><\/p>\n<p><span style=\"vertical-align: inherit;\">\u2013 Meanwhile, the outdoor unit will work with the help of pipes and heat conduction medium to adjust the room temperature to the set parameters.<\/span><\/p>\n<p><span style=\"vertical-align: inherit;\">\u2013 In the indoor unit, there are two most important parts: the temperature sensor and the signal board. The temperature sensor will record the temperature inside the room and transmit that signal to the processing board. If there is a difference between the room temperature and the set temperature, the board will control the outdoor unit to operate.<\/span><\/p>\n<p><span style=\"vertical-align: inherit;\">\u2013 Through the medium, the temperature will be absorbed (cooled) or transmitted (heated) from the room air to the outdoor unit and out. This is a cyclic process, repeated until the room temperature is equal to the set temperature.<\/span><\/p>\n<p><span style=\"vertical-align: inherit;\">\u2013 Only when the outdoor unit is in operation will it provide cooling for the indoor unit. So when the outdoor unit is at rest, the indoor unit will only consume power like a normal fan.<\/span><\/p>\n<p><span style=\"vertical-align: inherit;\">Therefore, it is necessary to set the appropriate temperature so that the outdoor unit does not have to work excessively, leading to power loss.<\/span><\/p>\n<p><span style=\"vertical-align: inherit;\">For each different space, there is a limit to the minimum temperature of the indoor unit. Therefore, the temperature should only be maintained at this level or higher to avoid causing the outdoor unit to operate continuously without rest.<\/span><\/p>\n<h2 id=\"hmenuid3\"><span class=\"ez-toc-section\" id=\"Advantages_and_disadvantages_of_central_air_conditioning\"><\/span><span style=\"vertical-align: inherit;\">Advantages and disadvantages of central air conditioning<\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"vertical-align: inherit;\">The pros and cons of central air conditioning you should know include:<\/span><\/p>\n<h3 id=\"hmenuid4\"><span class=\"ez-toc-section\" id=\"1_Advantages\"><\/span><span style=\"vertical-align: inherit;\">1. Advantages<\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li><span style=\"vertical-align: inherit;\">Large operating capacity, enough to meet the load for apartments with an area of\u00a0 <\/span><strong><span style=\"vertical-align: inherit;\">\u200b\u200b\u200b\u200b100m2 or more<\/span><\/strong><span style=\"vertical-align: inherit;\"> .<\/span><\/li>\n<li><span style=\"vertical-align: inherit;\">The wide-area temperature control system eliminates heat disparities between indoor areas.<\/span><\/li>\n<li><span style=\"vertical-align: inherit;\">Always keep the temperature level guaranteed and stable thanks to the use of inverter compressors.<\/span><\/li>\n<li><span style=\"vertical-align: inherit;\">Limit heat loss to the outside.<\/span><\/li>\n<li><span style=\"vertical-align: inherit;\">Integrating many optimal utilities and technologies: inverter and sensor sensor, multi-function screen with LCD remote control, automatic change of cold or heating,&#8230;<\/span><\/li>\n<\/ul>\n<h3 id=\"hmenuid5\"><span class=\"ez-toc-section\" id=\"2_Disadvantages\"><\/span><span style=\"vertical-align: inherit;\">2. Disadvantages<\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li><span style=\"vertical-align: inherit;\">Use only in large spaces.<\/span><\/li>\n<li><span style=\"vertical-align: inherit;\">Not capable of cooling as fast as conventional air conditioners.<\/span><\/li>\n<li><span style=\"vertical-align: inherit;\">High investment and installation costs.<\/span><\/li>\n<\/ul>\n<p><span style=\"vertical-align: inherit;\">Contact us today for a free consultation and answer at:<\/span><\/p>\n<div dir=\"auto\">\n<div dir=\"auto\">\n<div dir=\"auto\">\n<h2 dir=\"auto\"><span class=\"ez-toc-section\" id=\"Contact_information_P69_-_M_E_Contractor\"><\/span><span id=\"Thong_tin_lien_he_P69_-_Nha_Thau_Co_Dien_M_E\" class=\"ez-toc-section\"><\/span><span id=\"Thong_tin_lien_he_P69_-_Nha_Thau_Co_Dien_M_E\" class=\"ez-toc-section\"><\/span><span id=\"Thong_tin_lien_he_P69_-_Nha_Thau_Co_Dien_M_E\" class=\"ez-toc-section\"><\/span><strong><span style=\"vertical-align: inherit;\">Contact information P69 \u2013 M&amp;E Contractor<\/span><\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<div dir=\"auto\">\n<div dir=\"auto\">\n<div dir=\"auto\">\n<p><span style=\"vertical-align: inherit;\">Address: No. 6\/165C Xuan Thuy, Cau Giay District, Hanoi<\/span><\/p>\n<p><span style=\"vertical-align: inherit;\">Website: https:\/\/p69.com.vn\/<\/span><\/p>\n<p><span style=\"vertical-align: inherit;\">Hotline: 02422121212 \u2013 0965937799<\/span><\/p>\n<p><span style=\"vertical-align: inherit;\">Email: kd@cokhip69.com.vn<\/span><\/p>\n<p><span style=\"vertical-align: inherit;\">Facebook:\u00a0 <\/span><a href=\"https:\/\/www.facebook.com\/p69nhathaucodien\" target=\"_blank\" rel=\"nofollow noopener\"><span style=\"vertical-align: inherit;\">https:\/\/www.facebook.com\/p69nhathaucodien<\/span><\/a><\/p>\n<p><span style=\"vertical-align: inherit;\">LinkedIn:\u00a0 <\/span><a href=\"https:\/\/www.linkedin.com\/in\/congtyp69\/\" target=\"_blank\" rel=\"nofollow noopener\"><span style=\"vertical-align: inherit;\">https:\/\/www.linkedin.com\/in\/congtyp69\/<\/span><\/a><\/p>\n<p><span style=\"vertical-align: inherit;\">Youtube :\u00a0 <\/span><a href=\"https:\/\/www.youtube.com\/channel\/UCOUwCnE5iGj8iqe_ZIUM7oA\" target=\"_blank\" rel=\"nofollow noopener\"><span style=\"vertical-align: inherit;\">https:\/\/www.youtube.com\/channel\/UCOUwCnE5iGj8iqe_ZIUM7oA<\/span><\/a><\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<p><\/p>\n\n\n<div class=\"kk-star-ratings kksr-auto kksr-align-left kksr-valign-bottom\"\n    data-payload='{&quot;align&quot;:&quot;left&quot;,&quot;id&quot;:&quot;3399&quot;,&quot;slug&quot;:&quot;default&quot;,&quot;valign&quot;:&quot;bottom&quot;,&quot;ignore&quot;:&quot;&quot;,&quot;reference&quot;:&quot;auto&quot;,&quot;class&quot;:&quot;&quot;,&quot;count&quot;:&quot;0&quot;,&quot;legendonly&quot;:&quot;&quot;,&quot;readonly&quot;:&quot;&quot;,&quot;score&quot;:&quot;0&quot;,&quot;starsonly&quot;:&quot;&quot;,&quot;best&quot;:&quot;5&quot;,&quot;gap&quot;:&quot;5&quot;,&quot;greet&quot;:&quot;Rate this post&quot;,&quot;legend&quot;:&quot;0\\\/5 - (0 votes)&quot;,&quot;size&quot;:&quot;24&quot;,&quot;width&quot;:&quot;0&quot;,&quot;_legend&quot;:&quot;{score}\\\/{best} - ({count} {votes})&quot;,&quot;font_factor&quot;:&quot;1.25&quot;}'>\n            \n<div class=\"kksr-stars\">\n    \n<div class=\"kksr-stars-inactive\">\n            <div class=\"kksr-star\" data-star=\"1\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; 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What are the components of a central air conditioning system? Is it different from conventional air conditioning systems? All will be answered in the content of the article below of the company P69 , please refer to it. What is a central air conditioning system? Central air conditioning system [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":3416,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[24],"tags":[],"class_list":["post-3399","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tin-tuc"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v17.1.1 (Yoast SEO v20.0) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>H\u1ec7 th\u00f4ng \u0111i\u1ec1u h\u00f2a trung t\u00e2m l\u00e0 g\u00ec? C\u1ea5u t\u1ea1o h\u1ec7 th\u1ed1ng chi ti\u1ebft<\/title>\n<meta name=\"description\" content=\"H\u1ec7 th\u00f4ng \u0111i\u1ec1u h\u00f2a trung t\u00e2m l\u00e0 g\u00ec? C\u1ea5u t\u1ea1o h\u1ec7 th\u1ed1ng \u0111i\u1ec1u h\u00f2a trung t\u00e2m c\u00f3 nh\u1eefng b\u1ed9 ph\u1eadn n\u00e0o? C\u00f3 kh\u00e1c g\u00ec so v\u1edbi nh\u1eefng h\u1ec7 th\u1ed1ng \u0111i\u1ec1u h\u00f2a\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/p69.com.vn\/he-thong-dieu-hoa-trung-tam\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"[:vi]H\u1ec7 th\u00f4ng \u0111i\u1ec1u h\u00f2a trung t\u00e2m l\u00e0 g\u00ec? C\u1ea5u t\u1ea1o h\u1ec7 th\u1ed1ng chi ti\u1ebft[:en]What is central air conditioning system? 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