{"id":220933,"date":"2026-01-23T10:00:00","date_gmt":"2026-01-23T09:00:00","guid":{"rendered":"https:\/\/www.growbarato.net\/blog\/?p=220933"},"modified":"2026-01-19T14:07:55","modified_gmt":"2026-01-19T13:07:55","slug":"domestic-extractor-hood-airflow-how-to-calculate-for-indoor-grow-rooms","status":"publish","type":"post","link":"https:\/\/www.gbthegreenbrand.com\/blog\/domestic-extractor-hood-airflow-how-to-calculate-for-indoor-grow-rooms\/","title":{"rendered":"Domestic extractor hood airflow: How to calculate for indoor grow rooms"},"content":{"rendered":"\n<p>The airflow of a domestic extractor hood is the starting point for understanding how to properly ventilate an indoor grow space and maintain a stable environment for your plants.<\/p>\n\n\n\n<p>Although the term is commonly associated with kitchens or homes, the principle for calculating airflow is exactly the same in a grow cabinet: <strong>efficiently renewing the air to control temperature, humidity, and odors.<\/strong><\/p>\n\n\n\n<p>Knowing how to calculate it accurately prevents common mistakes, unnecessary purchases, and issues during cultivation. In this guide, we explain the process step by step, clearly and applicable to any indoor grow.<br><\/p>\n\n\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_85 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<label for=\"ez-toc-cssicon-toggle-item-6a59fd3c57319\" class=\"ez-toc-cssicon-toggle-label\"><p class=\"ez-toc-title\" style=\"cursor:inherit\">Contenido<\/p>\n<span class=\"ez-toc-cssicon\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><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><\/span><\/label><input type=\"checkbox\"  id=\"ez-toc-cssicon-toggle-item-6a59fd3c57319\"  \/><nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.gbthegreenbrand.com\/blog\/domestic-extractor-hood-airflow-how-to-calculate-for-indoor-grow-rooms\/#Why_airflow_matters\" >Why airflow matters<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.gbthegreenbrand.com\/blog\/domestic-extractor-hood-airflow-how-to-calculate-for-indoor-grow-rooms\/#Problems_caused_by_improper_domestic_extractor_hood_airflow\" >Problems caused by improper domestic extractor hood airflow<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.gbthegreenbrand.com\/blog\/domestic-extractor-hood-airflow-how-to-calculate-for-indoor-grow-rooms\/#Basic_concepts_you_need_to_know\" >Basic concepts you need to know<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.gbthegreenbrand.com\/blog\/domestic-extractor-hood-airflow-how-to-calculate-for-indoor-grow-rooms\/#Basic_airflow_calculation_The_essential_formula\" >Basic airflow calculation: The essential formula<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.gbthegreenbrand.com\/blog\/domestic-extractor-hood-airflow-how-to-calculate-for-indoor-grow-rooms\/#Step_1_Calculate_the_volume_of_your_space\" >Step 1: Calculate the volume of your space<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.gbthegreenbrand.com\/blog\/domestic-extractor-hood-airflow-how-to-calculate-for-indoor-grow-rooms\/#Step_2_Determine_required_air_changes\" >Step 2: Determine required air changes<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.gbthegreenbrand.com\/blog\/domestic-extractor-hood-airflow-how-to-calculate-for-indoor-grow-rooms\/#Adjusting_the_calculation_to_reality_System_losses\" >Adjusting the calculation to reality: System losses<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.gbthegreenbrand.com\/blog\/domestic-extractor-hood-airflow-how-to-calculate-for-indoor-grow-rooms\/#Extractor_and_intake_fan_How_to_balance_them_correctly\" >Extractor and intake fan: How to balance them correctly<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.gbthegreenbrand.com\/blog\/domestic-extractor-hood-airflow-how-to-calculate-for-indoor-grow-rooms\/#Professional_tips_to_fine-tune_your_system\" >Professional tips to fine-tune your system<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.gbthegreenbrand.com\/blog\/domestic-extractor-hood-airflow-how-to-calculate-for-indoor-grow-rooms\/#Duct_diameter\" >Duct diameter<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/www.gbthegreenbrand.com\/blog\/domestic-extractor-hood-airflow-how-to-calculate-for-indoor-grow-rooms\/#Signs_of_insufficient_extraction\" >Signs of insufficient extraction<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/www.gbthegreenbrand.com\/blog\/domestic-extractor-hood-airflow-how-to-calculate-for-indoor-grow-rooms\/#Common_solutions\" >Common solutions<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/www.gbthegreenbrand.com\/blog\/domestic-extractor-hood-airflow-how-to-calculate-for-indoor-grow-rooms\/#Checklist_before_buying_your_domestic_extractor_hood\" >Checklist before buying your domestic extractor hood<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/www.gbthegreenbrand.com\/blog\/domestic-extractor-hood-airflow-how-to-calculate-for-indoor-grow-rooms\/#Preguntas_frecuentes_FAQ\" >Preguntas frecuentes (FAQ)<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/www.gbthegreenbrand.com\/blog\/domestic-extractor-hood-airflow-how-to-calculate-for-indoor-grow-rooms\/#%C2%BFQue_pasa_si_uso_un_extractor_con_demasiado_caudal_en_un_armario_pequeno\" >\u00bfQu\u00e9 pasa si uso un extractor con demasiado caudal en un armario peque\u00f1o?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/www.gbthegreenbrand.com\/blog\/domestic-extractor-hood-airflow-how-to-calculate-for-indoor-grow-rooms\/#%C2%BFEs_obligatorio_usar_intractor_o_puedo_ventilar_solo_con_extraccion\" >\u00bfEs obligatorio usar intractor o puedo ventilar solo con extracci\u00f3n?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/www.gbthegreenbrand.com\/blog\/domestic-extractor-hood-airflow-how-to-calculate-for-indoor-grow-rooms\/#%C2%BFComo_influye_la_temperatura_exterior_en_el_caudal_necesario_del_extractor\" >\u00bfC\u00f3mo influye la temperatura exterior en el caudal necesario del extractor?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/www.gbthegreenbrand.com\/blog\/domestic-extractor-hood-airflow-how-to-calculate-for-indoor-grow-rooms\/#%C2%BFCada_cuanto_tiempo_hay_que_cambiar_el_filtro_de_carbon_para_que_no_reduzca_el_caudal\" >\u00bfCada cu\u00e1nto tiempo hay que cambiar el filtro de carb\u00f3n para que no reduzca el caudal?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-19\" href=\"https:\/\/www.gbthegreenbrand.com\/blog\/domestic-extractor-hood-airflow-how-to-calculate-for-indoor-grow-rooms\/#%C2%BFUn_extractor_silencioso_mueve_menos_aire_que_uno_estandar\" >\u00bfUn extractor silencioso mueve menos aire que uno est\u00e1ndar?<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Why_airflow_matters\"><\/span>Why airflow matters<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Properly calculated ventilation is not just about \u201cremoving hot air.\u201d <strong>The correct domestic extractor hood airflow<\/strong> allows you to <strong>create a stable environment<\/strong> where your plants can grow without stress.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"450\" src=\"https:\/\/www.growbarato.net\/blog\/wp-content\/uploads\/2026\/01\/grow-room-EN.jpg\" alt=\"\" class=\"wp-image-220941\" srcset=\"https:\/\/www.gbthegreenbrand.com\/blog\/wp-content\/uploads\/2026\/01\/grow-room-EN.jpg 1000w, https:\/\/www.gbthegreenbrand.com\/blog\/wp-content\/uploads\/2026\/01\/grow-room-EN-300x135.jpg 300w, https:\/\/www.gbthegreenbrand.com\/blog\/wp-content\/uploads\/2026\/01\/grow-room-EN-768x346.jpg 768w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><\/figure>\n<\/div>\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Problems_caused_by_improper_domestic_extractor_hood_airflow\"><\/span>Problems caused by improper domestic extractor hood airflow<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Excess heat buildup inside the grow cabinet.<\/li>\n\n\n\n<li>High humidity and increased risk of mold.<\/li>\n\n\n\n<li>Stale air with insufficient CO\u2082 supply.<\/li>\n\n\n\n<li>Hard-to-control odors, even with a carbon filter.<\/li>\n\n\n\n<li>Higher electricity consumption due to overworking the extractor.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Basic_concepts_you_need_to_know\"><\/span>Basic concepts you need to know<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Airflow (m\u00b3\/h)<\/strong>: the amount of air the extractor moves in one hour.<\/li>\n\n\n\n<li><strong>Volume<\/strong>: total space of the cabinet or grow room.<\/li>\n\n\n\n<li><strong>Air changes per hour<\/strong>: how many times the air is replaced in an hour.<\/li>\n\n\n\n<li><strong>Losses<\/strong>: actual reduction in airflow due to filters, ducts, and bends.<\/li>\n<\/ul>\n\n\n\n<p>While users often focus on extractor power, <strong>they shouldn\u2019t overlook installation<\/strong>, filters, duct curves, and tubing size, as these affect airflow as much as the motor itself.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Basic_airflow_calculation_The_essential_formula\"><\/span>Basic airflow calculation: The essential formula<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Before choosing a domestic extractor hood or comparing models, <strong>it\u2019s essential to know the minimum airflow your grow space requires<\/strong>. This calculation is based on two simple factors: the volume of the cabinet or room and the number of air changes needed to maintain stable conditions.<\/p>\n\n\n\n<p>Using this basic formula provides a reliable reference value, which can then be adjusted according to lighting type, climate, or ventilation setup.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Step_1_Calculate_the_volume_of_your_space\"><\/span>Step 1: Calculate the volume of your space<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p><strong>Measure the interior of the cabinet or room by multiplying its three dimensions<\/strong>\u2014width, length, and height. This gives you the volume in cubic meters. Once you have the cubic volume, <strong>apply this formula<\/strong>:<\/p>\n\n\n\n<p><strong>Volume (m\u00b3) = length \u00d7 width \u00d7 height<\/strong><\/p>\n\n\n\n<p>Example: Cabinet 1.2 \u00d7 1.2 \u00d7 2 m = <strong>2.88 m\u00b3<\/strong><\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Step_2_Determine_required_air_changes\"><\/span>Step 2: Determine required air changes<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>In domestic ventilation, such as in kitchens, the standard is usually six to twelve air changes per hour. However, indoor cultivation requires much more.<\/p>\n\n\n\n<p><strong>Lighting<\/strong>, especially when on for many hours, <strong>produces constant heat<\/strong>, and plants need a continuous supply of fresh air to grow properly.<\/p>\n\n\n\n<p>For this reason, indoor growers commonly use a much higher reference for domestic extractor hood airflow: <strong>renewing all the air in the cabinet once per minute<\/strong>. <strong>This translates into a simple formula<\/strong> that has become a standard in many grow shops and specialized guides.<\/p>\n\n\n\n<p><strong>Common grow shop rule:<br>Base airflow = Volume \u00d7 60<\/strong> This ensures the air is renewed <strong>once per minute<\/strong>.<\/p>\n\n\n\n<p>Example:<br>2.88 m\u00b3 \u00d7 60 = <strong>172.8 m\u00b3\/h<\/strong><\/p>\n\n\n\n<p><strong>The multiplier 60 is not a fixed law<\/strong>. In setups with efficient LEDs and good ambient temperature, it may be sufficient, while in hot environments or with HPS lights, adjustments may be needed.<\/p>\n\n\n<p>[ppgbo products=&#8221;5807,180,8279&#8243; language=&#8221;en&#8221;]<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Adjusting_the_calculation_to_reality_System_losses\"><\/span>Adjusting the calculation to reality: System losses<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>One of the most common mistakes when selecting an extractor is relying solely on the formula\u2019s number.&nbsp;<strong>The domestic extractor hood airflow specified by manufacturers is always theoretical, measured under ideal conditions with no resistance.<\/strong>&nbsp;In a real grow environment, this never happens because the air must pass through filters, ducts, and bends before exiting the space.<\/p>\n\n\n\n<p>The first element that reduces airflow is the&nbsp;<a href=\"https:\/\/www.gbthegreenbrand.com\/blog\/que-es-un-filtro-de-carbon-activado\/\">carbon filter<\/a>. While essential for odor control,&nbsp;<strong>it introduces resistance, typically causing around a 20% loss.<\/strong>&nbsp;<strong>This is compounded by the extraction duct length<\/strong>: the longer and more flexible the duct, the harder the extractor has to work. Additionally,&nbsp;<strong>each elbow or curve further reduces the system\u2019s real airflow.<\/strong><\/p>\n\n\n\n<p>For this reason, as a practical and safe rule,&nbsp;<strong>it\u2019s recommended to increase the calculated domestic extractor hood airflow by 20% to 40%<\/strong>, depending on the complexity of the setup. In simple installations with short ducts and few bends, a 20% increase is usually sufficient. In longer setups or with multiple bends, the margin should be higher.<\/p>\n\n\n\n<p>Following the previous example, if the base calculation is 172.8 m\u00b3\/h, applying a 20% adjustment results in a&nbsp;<strong>recommended airflow of 207.4 m\u00b3\/h<\/strong>, a much more realistic value for a stable indoor grow.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th colspan=\"3\">Table 1 \u2013 Summary Formula for Domestic Extractor Hood Airflow<\/th><\/tr><tr><th>Element<\/th><th>Calculation<\/th><th>Result<\/th><\/tr><\/thead><tbody><tr><th>Volume<\/th><td>Length \u00d7 Width \u00d7 Height<\/td><td>m\u00b3<\/td><\/tr><tr><th>Base airflow<\/th><td>Volume \u00d7 60<\/td><td>m\u00b3\/h<\/td><\/tr><tr><th>Filter adjustment<\/th><td>\u00d7 1.2<\/td><td>m\u00b3\/h<\/td><\/tr><tr><th>Ducts &amp; bends<\/th><td>\u00d7 1.3 \u2013 1.6<\/td><td>m\u00b3\/h<\/td><\/tr><tr><th>Final choice<\/th><td>Higher model<\/td><td>More stability<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th colspan=\"4\">Table 2 \u2013 Common Grow Cabinet Examples<\/th><\/tr><tr><th>Cabinet<\/th><th>Volume (m\u00b3)<\/th><th>Base airflow<\/th><th>With filter (+20%)<\/th><\/tr><\/thead><tbody><tr><th>60 \u00d7 60 \u00d7 160<\/th><td>0.58<\/td><td>35 m\u00b3\/h<\/td><td>42 m\u00b3\/h<\/td><\/tr><tr><th>80 \u00d7 80 \u00d7 180<\/th><td>1.15<\/td><td>69 m\u00b3\/h<\/td><td>83 m\u00b3\/h<\/td><\/tr><tr><th>100 \u00d7 100 \u00d7 200<\/th><td>2.00<\/td><td>120 m\u00b3\/h<\/td><td>144 m\u00b3\/h<\/td><\/tr><tr><th>120 \u00d7 120 \u00d7 200<\/th><td>2.88<\/td><td>173 m\u00b3\/h<\/td><td>207 m\u00b3\/h<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Extractor_and_intake_fan_How_to_balance_them_correctly\"><\/span>Extractor and intake fan: How to balance them correctly<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>For a balanced ventilation system,&nbsp;<strong>the extractor\u2019s airflow should always exceed the&nbsp;<a href=\"https:\/\/www.gbthegreenbrand.com\/blog\/intractor-de-aire-indoor\/\">intake fan<\/a><\/strong>. This creates slight negative pressure inside the cabinet, helping the air exit where it should and allowing the carbon filter to work efficiently.<\/p>\n\n\n\n<p>As a general guideline, many growers&nbsp;<strong>use an intake fan with about a quarter of the extractor\u2019s airflow<\/strong>. This simple ratio works well in most&nbsp;<a href=\"https:\/\/www.gbthegreenbrand.com\/46-armarios-de-cultivo\">standard cabinets<\/a>&nbsp;and makes controlling the indoor climate easier.<\/p>\n\n\n\n<p><strong>Intake \u2248 Extractor \u00f7 4<\/strong><\/p>\n\n\n\n<p>This helps maintain slight negative pressure,&nbsp;<strong>key for odor control.<\/strong><\/p>\n\n\n\n<p>The recommended installation order is usually the same: Carbon filter \u2192 extractor \u2192 duct \u2192 outlet. Whenever possible, use short ducts with minimal bends.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Professional_tips_to_fine-tune_your_system\"><\/span>Professional tips to fine-tune your system<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Beyond the numbers, small details can make a big difference in system performance.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Duct_diameter\"><\/span>Duct diameter<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>A narrow duct restricts actual airflow. Always use the diameter recommended by the extractor.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Signs_of_insufficient_extraction\"><\/span>Signs of insufficient extraction<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>High temperature despite proper lighting.<\/li>\n\n\n\n<li>Odors escaping the cabinet.<\/li>\n\n\n\n<li>Humidity difficult to control.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Common_solutions\"><\/span>Common solutions<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Power controller.<\/li>\n\n\n\n<li>Acoustic silencer.<\/li>\n\n\n\n<li>Reduce duct length and number of bends.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Checklist_before_buying_your_domestic_extractor_hood\"><\/span>Checklist before buying your domestic extractor hood<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Exact cabinet dimensions.<\/li>\n\n\n\n<li>Lighting type (LED, HPS).<\/li>\n\n\n\n<li>Number of bends and duct length.<\/li>\n\n\n\n<li>Use of carbon filter.<\/li>\n\n\n\n<li>Typical ambient temperature.<\/li>\n<\/ul>\n\n\n\n<p>With this information, the calculation of domestic extractor hood airflow for indoor cultivation is accurate and reliable.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"450\" src=\"https:\/\/www.growbarato.net\/blog\/wp-content\/uploads\/2025\/12\/campana_extractora.jpg\" alt=\"Kit de extracci\u00f3n para cultivo indoor con extractor, filtro de carb\u00f3n activo, controlador y conductos, dise\u00f1ado para eliminar olores y renovar el aire del armario\" class=\"wp-image-220205\" srcset=\"https:\/\/www.gbthegreenbrand.com\/blog\/wp-content\/uploads\/2025\/12\/campana_extractora.jpg 1000w, https:\/\/www.gbthegreenbrand.com\/blog\/wp-content\/uploads\/2025\/12\/campana_extractora-300x135.jpg 300w, https:\/\/www.gbthegreenbrand.com\/blog\/wp-content\/uploads\/2025\/12\/campana_extractora-768x346.jpg 768w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><\/figure>\n<\/div>\n\n\n\n<style>\n  .accordion-container {\n    width: 100%;\n    margin: 0 0 20px;\n    clear: both;\n  }\n  h3.accordion-titulo {\n    margin-bottom: 0;\n    margin-top: 2%;\n  }\n  .accordion-titulo {\n    position: relative;\n    display: block;\n    padding: 10px 20px;\n    font-size: 18px;\n    font-weight: 300;\n    border: 1px solid #000;\n    color: #000;\n    text-decoration: none;\n    cursor: pointer;\n  }\n  .accordion-titulo.open {\n    color: #00ab8e;\n    border-color: #00ab8e;\n  }\n  .accordion-titulo:hover {\n    color: #00ab8e;\n    border-color: #00ab8e;\n  }\n  .accordion-titulo span.toggle-icon:before {\n    content:\"+\";\n  }\n  .accordion-titulo.open span.toggle-icon:before {\n    content:\"-\";\n  }\n  .accordion-titulo span.toggle-icon {\n    position: absolute;\n    top: 6px;\n    right: 20px;\n    font-size: 26px;\n    font-weight: bold;\n  }\n  .accordion-content {\n    display: none;\n    padding: 20px;\n    overflow: auto;\n    font-family: 'Roboto', sans-serif;\n    font-size: 16px;\n  }\n  @media (max-width: 767px) {\n    h3.accordion-titulo {\n      padding-right: 12%;\n    }\n  }\n<\/style>\n\n<script>\n  jQuery(document).ready(function($) {\n    $(\".accordion-titulo\").click(function(){\n      var contenido = $(this).next(\".accordion-content\");\n      if (contenido.css(\"display\") === \"none\") {\n        contenido.slideDown(250);\n        $(this).addClass(\"open\");\n      } else {\n        contenido.slideUp(250);\n        $(this).removeClass(\"open\");\n      }\n    });\n  });\n<\/script>\n\n<div class=\"accordion-container\" itemscope itemtype=\"https:\/\/schema.org\/FAQPage\" style=\"width: 80%; max-width: 100%\">\n  <h2 style=\"width: 100% !important;\"><span class=\"ez-toc-section\" id=\"Preguntas_frecuentes_FAQ\"><\/span>Preguntas frecuentes (FAQ)<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n  <!-- FAQ 1 -->\n  <div itemscope itemprop=\"mainEntity\" itemtype=\"https:\/\/schema.org\/Question\">\n    <h3 itemprop=\"name\" class=\"accordion-titulo\" style=\"width: 100% !important;\"><span class=\"ez-toc-section\" id=\"%C2%BFQue_pasa_si_uso_un_extractor_con_demasiado_caudal_en_un_armario_pequeno\"><\/span>\n      \u00bfQu\u00e9 pasa si uso un extractor con demasiado caudal en un armario peque\u00f1o?\n      <span class=\"toggle-icon\"><\/span>\n    <span class=\"ez-toc-section-end\"><\/span><\/h3>\n    <div class=\"accordion-content\" itemscope itemprop=\"acceptedAnswer\" itemtype=\"https:\/\/schema.org\/Answer\">\n      <div itemprop=\"text\">\n        Un extractor sobredimensionado puede provocar una <b>renovaci\u00f3n excesiva del aire<\/b>, generando <b>desecaci\u00f3n del sustrato<\/b>, bajadas bruscas de <b>humedad<\/b> y <b>estr\u00e9s<\/b> en las plantas. Adem\u00e1s, aumenta el <b>ruido<\/b> y el <b>consumo el\u00e9ctrico<\/b> innecesariamente. Por ello, es preferible ajustar el caudal con un <b>controlador de potencia<\/b> en lugar de instalar un extractor demasiado potente sin regulaci\u00f3n.\n      <\/div>\n    <\/div>\n  <\/div>\n\n  <!-- FAQ 2 -->\n  <div itemscope itemprop=\"mainEntity\" itemtype=\"https:\/\/schema.org\/Question\">\n    <h3 itemprop=\"name\" class=\"accordion-titulo\" style=\"width: 100% !important;\"><span class=\"ez-toc-section\" id=\"%C2%BFEs_obligatorio_usar_intractor_o_puedo_ventilar_solo_con_extraccion\"><\/span>\n      \u00bfEs obligatorio usar intractor o puedo ventilar solo con extracci\u00f3n?\n      <span class=\"toggle-icon\"><\/span>\n    <span class=\"ez-toc-section-end\"><\/span><\/h3>\n    <div class=\"accordion-content\" itemscope itemprop=\"acceptedAnswer\" itemtype=\"https:\/\/schema.org\/Answer\">\n      <div itemprop=\"text\">\n        No es obligatorio usar <b>intractor<\/b> en todos los cultivos. En armarios peque\u00f1os o con <b>entradas pasivas bien dimensionadas<\/b>, la extracci\u00f3n suele ser suficiente. El intractor se recomienda cuando el armario es grande, el recorrido del aire es largo o se necesita un <b>control m\u00e1s preciso<\/b> de temperatura y humedad.\n      <\/div>\n    <\/div>\n  <\/div>\n\n  <!-- FAQ 3 -->\n  <div itemscope itemprop=\"mainEntity\" itemtype=\"https:\/\/schema.org\/Question\">\n    <h3 itemprop=\"name\" class=\"accordion-titulo\" style=\"width: 100% !important;\"><span class=\"ez-toc-section\" id=\"%C2%BFComo_influye_la_temperatura_exterior_en_el_caudal_necesario_del_extractor\"><\/span>\n      \u00bfC\u00f3mo influye la temperatura exterior en el caudal necesario del extractor?\n      <span class=\"toggle-icon\"><\/span>\n    <span class=\"ez-toc-section-end\"><\/span><\/h3>\n    <div class=\"accordion-content\" itemscope itemprop=\"acceptedAnswer\" itemtype=\"https:\/\/schema.org\/Answer\">\n      <div itemprop=\"text\">\n        La <b>temperatura exterior<\/b> afecta directamente al rendimiento del sistema. En \u00e9pocas calurosas, el aire entrante ya es caliente, por lo que se necesita un <b>mayor caudal de extracci\u00f3n<\/b>. En climas templados o fr\u00edos, el mismo extractor puede funcionar correctamente con <b>menos potencia<\/b>.\n      <\/div>\n    <\/div>\n  <\/div>\n\n  <!-- FAQ 4 -->\n  <div itemscope itemprop=\"mainEntity\" itemtype=\"https:\/\/schema.org\/Question\">\n    <h3 itemprop=\"name\" class=\"accordion-titulo\" style=\"width: 100% !important;\"><span class=\"ez-toc-section\" id=\"%C2%BFCada_cuanto_tiempo_hay_que_cambiar_el_filtro_de_carbon_para_que_no_reduzca_el_caudal\"><\/span>\n      \u00bfCada cu\u00e1nto tiempo hay que cambiar el filtro de carb\u00f3n para que no reduzca el caudal?\n      <span class=\"toggle-icon\"><\/span>\n    <span class=\"ez-toc-section-end\"><\/span><\/h3>\n    <div class=\"accordion-content\" itemscope itemprop=\"acceptedAnswer\" itemtype=\"https:\/\/schema.org\/Answer\">\n      <div itemprop=\"text\">\n        Un filtro de carb\u00f3n mantiene un rendimiento \u00f3ptimo entre <b>9 y 18 meses<\/b>, seg\u00fan horas de uso y nivel de humedad. Cuando el carb\u00f3n se satura, no solo pierde eficacia contra el olor, sino que <b>aumenta la resistencia al paso del aire<\/b>, reduciendo el caudal real del extractor.\n      <\/div>\n    <\/div>\n  <\/div>\n\n  <!-- FAQ 5 -->\n  <div itemscope itemprop=\"mainEntity\" itemtype=\"https:\/\/schema.org\/Question\">\n    <h3 itemprop=\"name\" class=\"accordion-titulo\" style=\"width: 100% !important;\"><span class=\"ez-toc-section\" id=\"%C2%BFUn_extractor_silencioso_mueve_menos_aire_que_uno_estandar\"><\/span>\n      \u00bfUn extractor silencioso mueve menos aire que uno est\u00e1ndar?\n      <span class=\"toggle-icon\"><\/span>\n    <span class=\"ez-toc-section-end\"><\/span><\/h3>\n    <div class=\"accordion-content\" itemscope itemprop=\"acceptedAnswer\" itemtype=\"https:\/\/schema.org\/Answer\">\n      <div itemprop=\"text\">\n        No necesariamente. Los extractores silenciosos suelen tener un <b>dise\u00f1o aerodin\u00e1mico optimizado<\/b> y <b>aislamiento ac\u00fastico<\/b>, reduciendo el ruido sin afectar al caudal. Sin embargo, usados a m\u00e1xima potencia en espacios peque\u00f1os y sin regulaci\u00f3n, pueden parecer menos eficientes por trabajar <b>fuera de su rango \u00f3ptimo<\/b>.\n      <\/div>\n    <\/div>\n  <\/div>\n\n<\/div>\n\n\n\n\n\n\n<p><\/p>\n<div style='text-align:center' class='yasr-auto-insert-visitor'><\/div>","protected":false},"excerpt":{"rendered":"<p>The airflow of a domestic extractor hood is the starting point for understanding how to properly ventilate an indoor grow space and maintain a stable environment for your plants. Although the term is commonly associated with kitchens or homes, the principle for calculating airflow is exactly the same in a grow cabinet: efficiently renewing the\u2026 <span class=\"leermas\" onclick=\"window.location.href='https:\/\/www.gbthegreenbrand.com\/blog\/domestic-extractor-hood-airflow-how-to-calculate-for-indoor-grow-rooms\/'\">Continue reading<\/span ><\/p>\n","protected":false},"author":18,"featured_media":220225,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"wprm-recipe-roundup-name":"","wprm-recipe-roundup-description":"","yasr_overall_rating":0,"yasr_post_is_review":"","yasr_auto_insert_disabled":"","yasr_review_type":"","footnotes":""},"categories":[254,253],"tags":[],"class_list":["post-220933","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-marijuana-crops","category-tips-on-how-to-grow"],"yasr_visitor_votes":{"stars_attributes":{"read_only":false,"span_bottom":false},"number_of_votes":5,"sum_votes":23},"_links":{"self":[{"href":"https:\/\/www.gbthegreenbrand.com\/blog\/wp-json\/wp\/v2\/posts\/220933","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.gbthegreenbrand.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.gbthegreenbrand.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.gbthegreenbrand.com\/blog\/wp-json\/wp\/v2\/users\/18"}],"replies":[{"embeddable":true,"href":"https:\/\/www.gbthegreenbrand.com\/blog\/wp-json\/wp\/v2\/comments?post=220933"}],"version-history":[{"count":2,"href":"https:\/\/www.gbthegreenbrand.com\/blog\/wp-json\/wp\/v2\/posts\/220933\/revisions"}],"predecessor-version":[{"id":220948,"href":"https:\/\/www.gbthegreenbrand.com\/blog\/wp-json\/wp\/v2\/posts\/220933\/revisions\/220948"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.gbthegreenbrand.com\/blog\/wp-json\/wp\/v2\/media\/220225"}],"wp:attachment":[{"href":"https:\/\/www.gbthegreenbrand.com\/blog\/wp-json\/wp\/v2\/media?parent=220933"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.gbthegreenbrand.com\/blog\/wp-json\/wp\/v2\/categories?post=220933"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.gbthegreenbrand.com\/blog\/wp-json\/wp\/v2\/tags?post=220933"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}