[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"blog-post-how-do-you-test-ventilation-airflow":3,"atspace-main-nav":306,"atspace-footer-navs":334,"blog-active-tags":456,"blog-active-categories":595},{"data":4},{"id":5,"user_id":6,"slug":7,"full_url":8,"title":9,"excerpt":10,"featured_image":11,"featured_image_alt":10,"data_model":12,"publish_date":47,"is_template":24,"created_at":48,"updated_at":49,"settings":10,"seometa":50,"categories":63,"tags":64,"theme_styles":71,"page_type":10,"linked_page":10},76,1,"how-do-you-test-ventilation-airflow","\u002Fblog\u002Fhow-do-you-test-ventilation-airflow","How Do You Test Ventilation Airflow?",null,"https:\u002F\u002Fatspace-ltd.s3.eu-west-2.amazonaws.com\u002Fblog-imports\u002Fhow20to20test20ventilation20flow20rate.jpg",[13],{"name":14,"id":15,"componentName":16,"bgImage":10,"bgColor":10,"margin":10,"parentAlign":17,"padding":10,"classes":10,"colSpan":10,"cols":18,"colsMD":19,"originalModel":20,"borderWidth":10,"borderColor":10,"borderRadius":10,"sticky":24,"stickyTop":45},"Full Column Block","94522815-b36a-4bdd-b414-8c0b46957b13","ColContainer","w-full","grid-cols-1","md:grid-cols-12",[21],[22,29],{"classes":23,"customColSpan":24,"id":25,"colSpan":23,"colSpanSM":26,"colSpanMD":27,"colSpanLG":28,"borderWidth":10,"borderColor":10,"borderRadius":10},"col-span-1",false,"af6bec94-8e8d-4a03-a3a9-c9ef7b373ca6","sm:col-span-12","md:col-span-12","lg:col-span-12",{"name":30,"componentName":16,"nested":31,"cols":18,"colsMD":19,"customColSpan":24,"parentAlign":17,"bgImage":10,"inlineStyles":10,"bgColor":10,"group":32,"margin":10,"padding":10,"classes":10,"colSpan":10,"id":33,"originalModel":34,"borderWidth":10,"borderColor":10,"borderRadius":10,"sticky":24,"stickyTop":45,"containerWidth":46},"Nested Container",true,"main_nested","41474c3d-dbbc-4174-8754-922ca2a1c03b",[35],[36,38],{"id":37,"colSpan":23,"colSpanSM":26,"colSpanMD":27,"colSpanLG":28,"customColSpan":24,"bgColor":10,"borderWidth":10,"borderColor":10,"borderRadius":10,"classes":10},"695a8d2e-6293-4a76-97fd-4a86847b6fbf",{"name":39,"componentName":40,"group":41,"margin":10,"padding":10,"classes":10,"bgImage":10,"id":42,"originalModel":43},"WYSIWYG Editor","Wysiwyg","content","8912d330-e1fe-478e-9cb5-4d2644697ee1",{"proseEnabled":31,"content":44},"\u003Cp>\u003Cspan data-contrast=\"auto\">Here at ATSPACE, we cover all aspects of ventilation testing. All our engineers are fully qualified and have years of experience testing all types of ventilation systems. But how do we test the flow of air that passes through your extractor fans and ventilation systems? I’m glad you asked, as we will detail how we can tell that your fans are up to scratch!\u003C\u002Fspan>\u003Cspan data-ccp-props=\"{}\"> \u003C\u002Fspan>\u003C\u002Fp>\n\u003C!--more-->\n\u003Ch2>\u003Cstrong>\u003Cspan data-contrast=\"auto\">The basics \u003C\u002Fspan>\u003C\u002Fstrong>\u003Cspan data-ccp-props=\"{}\"> \u003C\u002Fspan>\u003C\u002Fh2>\n\u003Cp>\u003Cspan data-contrast=\"auto\">First, you will need a flowmeter or anemometer. Below are a few examples of these. \u003C\u002Fspan>\u003Cspan data-ccp-props=\"{}\"> \u003C\u002Fspan>\u003C\u002Fp>\n\u003Cp>\u003Cspan data-ccp-props=\"{}\">\u003Cspan role=\"presentation\">\u003Cimg unselectable=\"on\" src=\"https:\u002F\u002F20003044.fs1.hubspotusercontent-na1.net\u002Fhubfs\u002F20003044\u002Fundefined.png\" loading=\"lazy\">\u003C\u002Fspan>\u003Cspan data-contrast=\"auto\" xml:lang=\"EN-GB\" lang=\"EN-GB\">\u003C\u002Fspan>\u003Cspan role=\"presentation\">\u003Cimg unselectable=\"on\" src=\"https:\u002F\u002F20003044.fs1.hubspotusercontent-na1.net\u002Fhubfs\u002F20003044\u002Fundefined-1.png\" loading=\"lazy\">\u003C\u002Fspan>\u003Cspan data-contrast=\"auto\" xml:lang=\"EN-GB\" lang=\"EN-GB\">\u003C\u002Fspan>\u003Cspan role=\"presentation\">\u003Cimg unselectable=\"on\" src=\"https:\u002F\u002F20003044.fs1.hubspotusercontent-na1.net\u002Fhubfs\u002F20003044\u002Fundefined-2.png\" loading=\"lazy\">\u003C\u002Fspan>\u003Cspan data-contrast=\"auto\" xml:lang=\"EN-GB\" lang=\"EN-GB\">\u003C\u002Fspan>\u003C\u002Fspan>\u003C\u002Fp>\n\u003Cp>\u003Cspan data-contrast=\"auto\">The purpose of these instruments is to calculate the amount of airflow that passes from the internal surface of the fan to the external grill. Each fan location (which is commonly found in wet rooms, i.e. kitchen, utility, bathrooms, sanitary accommodation) must reach a certain benchmark, which is determined by Part F of the Building Regulations. See below the table of targets that each system must achieve.\u003C\u002Fspan>\u003Cspan data-ccp-props=\"{}\"> \u003C\u002Fspan>\u003C\u002Fp>\n\u003Ch2>\u003Cspan data-ccp-props=\"{}\">T\u003C\u002Fspan>\u003Cstrong>\u003Cspan data-contrast=\"auto\">aking the measurement\u003C\u002Fspan>\u003C\u002Fstrong>\u003Cspan data-ccp-props=\"{}\"> \u003C\u002Fspan>\u003C\u002Fh2>\n\u003Cp>\u003Cspan data-ccp-props=\"{}\"> \u003C\u002Fspan>\u003Cspan data-contrast=\"auto\">Actually, measuring the required ventilation rates is the easy part. The above instrument is simply placed over the fan, and the display will give a real-time output in litres per second (l\u002Fs) that the fan extracts. Once the figure displayed stabilises, the result is then recorded and a pass or fail is issued. \u003C\u002Fspan>\u003Cspan data-ccp-props=\"{}\"> \u003C\u002Fspan>\u003C\u002Fp>\n\u003Cp>\u003Cspan data-contrast=\"auto\">This is complicated slightly when moving to a system 3 & 4 system. The reason is that these systems require ‘balancing’.’ This means each fan must be adjusted to allow the correct amount of flow to pass through them. In addition, these systems have interconnected fans, which means when one fan is adjusted, the flow for the others changes accordingly. \u003C\u002Fspan>\u003Cspan data-ccp-props=\"{}\"> \u003C\u002Fspan>\u003C\u002Fp>\n\u003Cp>\u003Cspan data-ccp-props=\"{}\">\u003Cspan role=\"presentation\">\u003Cimg unselectable=\"on\" src=\"https:\u002F\u002F20003044.fs1.hubspotusercontent-na1.net\u002Fhubfs\u002F20003044\u002Fundefined-3.png\" loading=\"lazy\" style=\"margin-left: auto; margin-right: auto; display: block; width: 522px;\" width=\"522\">\u003C\u002Fspan>\u003Cspan data-contrast=\"auto\" xml:lang=\"EN-GB\" lang=\"EN-GB\">\u003C\u002Fspan>\u003C\u002Fspan>\u003C\u002Fp>\n\u003Cp>\u003Cspan data-contrast=\"auto\">Also, these systems require prior calculations to determine the flow required from the system. The table above shows the following factors are used;\u003C\u002Fspan>\u003Cspan data-ccp-props=\"{}\"> \u003C\u002Fspan>\u003C\u002Fp>\n\u003Cul>\n\u003Cli>\n\u003Cp style=\"font-weight: bold;\">\u003Cspan style=\"background-color: transparent; color: var(--font-copy-color); font-family: var(--font-copy);\">•  Overall floor area\u003C\u002Fspan>\u003C\u002Fp>\n\u003C\u002Fli>\n\u003Cli>\n\u003Cp style=\"font-weight: bold;\">\u003Cspan style=\"background-color: transparent; color: var(--font-copy-color); font-family: var(--font-copy);\">•  \u003C\u002Fspan>\u003Cspan style=\"background-color: transparent; color: var(--font-copy-color); font-family: var(--font-copy);\">Number of bedrooms\u003C\u002Fspan>\u003C\u002Fp>\n\u003C\u002Fli>\n\u003Cli>\n\u003Cp style=\"font-weight: bold;\">•  Type of System\u003C\u002Fp>\n\u003C\u002Fli>\n\u003Cli>\n\u003Cp style=\"font-weight: bold;\">•  Number of wet rooms\u003C\u002Fp>\n\u003Cspan data-ccp-props=\"{}\">\u003C\u002Fspan>\u003C\u002Fli>\n\u003C\u002Ful>\n\u003Cp>\u003Cspan data-contrast=\"auto\">Once the above steps are complete, the engineer can then balance the system. 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