{"product_id":"testo-420-hood-915-x-915-mm","title":"Testo 420 Hood 915 x 915 mm","description":"\u003cdiv style=\"text-align: left;\"\u003e\n\u003ch2 style=\"color: #007acc; border-bottom: 2px solid #f0f0f0; padding-bottom: 8px; margin-top: 35px;\"\u003eOverview\u003c\/h2\u003e\n\u003cp style=\"font-size: 16px; line-height: 1.6; margin-bottom: 20px;\"\u003eEnsure unparalleled accuracy in your HVAC system balancing and commissioning tasks with the Testo 420 Replacement Hood. Expertly crafted to a precise 915 x 915 mm, this hood seamlessly integrates with your existing Testo 420 Volume Flow Hood base unit, guaranteeing consistent and reliable air flow measurements across standard square diffusers and grilles.\u003c\/p\u003e\n\u003cp style=\"font-size: 16px; line-height: 1.6; margin-bottom: 20px;\"\u003eDesigned for professional technicians, this high-quality hood features an essential integrated flow straightener. This crucial component effectively tames turbulent air, providing the stable conditions necessary for the Testo 420's measurement sensors to deliver highly precise and repeatable readings, even in challenging installation environments.\u003c\/p\u003e\n\n\u003ch2 style=\"color: #007acc; border-bottom: 2px solid #f0f0f0; padding-bottom: 8px; margin-top: 35px;\"\u003eWhy It Matters\u003c\/h2\u003e\n\u003cp style=\"font-size: 16px; line-height: 1.6; margin-bottom: 20px;\"\u003eAccurate volumetric flow measurements are fundamental for efficient HVAC system operation, occupant comfort, and energy conservation. This replacement hood ensures that your Testo 420 continues to provide the verifiable data needed for compliance, system optimization, and effective troubleshooting, making it an indispensable tool for any serious air balancer or commissioning engineer.\u003c\/p\u003e\n\n\u003ch2 style=\"color: #007acc; border-bottom: 2px solid #f0f0f0; padding-bottom: 8px; margin-top: 35px;\"\u003eWhat's Included\u003c\/h2\u003e\n\u003cul style=\"font-size: 16px; line-height: 1.6; margin-bottom: 20px; padding-left: 20px;\"\u003e\n\u003cli style=\"font-size: 16px; line-height: 1.6; margin-bottom: 10px;\"\u003e✓ 1 x Replacement hood for Testo 420 (915 x 915 mm)\u003c\/li\u003e\n\u003cli style=\"font-size: 16px; line-height: 1.6; margin-bottom: 10px;\"\u003e✓ 1 x Convenient carrying bag (Product no. 0554 4203)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2 style=\"color: #007acc; border-bottom: 2px solid #f0f0f0; padding-bottom: 8px; margin-top: 35px;\"\u003eFeatures \u0026amp; Benefits\u003c\/h2\u003e\n\u003cul style=\"font-size: 16px; line-height: 1.6; margin-bottom: 20px; padding-left: 20px;\"\u003e\n\u003cli style=\"font-size: 16px; line-height: 1.6; margin-bottom: 10px;\"\u003e\n\u003cstrong\u003eStandardized Fit:\u003c\/strong\u003e The 915 x 915 mm dimensions provide a perfect match for common square ceiling diffusers and grilles, simplifying setup.\u003c\/li\u003e\n\u003cli style=\"font-size: 16px; line-height: 1.6; margin-bottom: 10px;\"\u003e\n\u003cstrong\u003eIntegrated Precision:\u003c\/strong\u003e A built-in flow straightener ensures that turbulent supply or exhaust air is smoothed out for consistently accurate readings.\u003c\/li\u003e\n\u003cli style=\"font-size: 16px; line-height: 1.6; margin-bottom: 10px;\"\u003e\n\u003cstrong\u003eQuick \u0026amp; Secure Attachment:\u003c\/strong\u003e Designed for seamless and rapid attachment to your existing Testo 420 measurement base, reducing valuable on-site downtime.\u003c\/li\u003e\n\u003cli style=\"font-size: 16px; line-height: 1.6; margin-bottom: 10px;\"\u003e\n\u003cstrong\u003eDurable \u0026amp; Reliable Construction:\u003c\/strong\u003e Manufactured with high-grade, resilient materials to withstand demanding commercial environments and repeated use.\u003c\/li\u003e\n\u003cli style=\"font-size: 16px; line-height: 1.6; margin-bottom: 10px;\"\u003e\n\u003cstrong\u003eEnhanced Portability:\u003c\/strong\u003e Includes a dedicated carrying bag for easy transport and protection of your hood between job sites.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2 style=\"color: #007acc; border-bottom: 2px solid #f0f0f0; padding-bottom: 8px; margin-top: 35px;\"\u003eApplications\u003c\/h2\u003e\n\u003cul style=\"font-size: 16px; line-height: 1.6; margin-bottom: 20px; padding-left: 20px;\"\u003e\n\u003cli style=\"font-size: 16px; line-height: 1.6; margin-bottom: 10px;\"\u003e✓ Volumetric flow balancing on square ceiling diffusers in commercial buildings.\u003c\/li\u003e\n\u003cli style=\"font-size: 16px; line-height: 1.6; margin-bottom: 10px;\"\u003e✓ HVAC commissioning and system optimization in offices, hospitals, and retail spaces.\u003c\/li\u003e\n\u003cli style=\"font-size: 16px; line-height: 1.6; margin-bottom: 10px;\"\u003e✓ Troubleshooting uneven air distribution without needing to remove or tape off grilles.\u003c\/li\u003e\n\u003cli style=\"font-size: 16px; line-height: 1.6; margin-bottom: 10px;\"\u003e✓ Ensuring compliance with air quality and ventilation standards.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2 style=\"color: #007acc; border-bottom: 2px solid #f0f0f0; padding-bottom: 8px; margin-top: 35px;\"\u003eTradie Pro Tip\u003c\/h2\u003e\n\u003cblockquote style=\"border-left: 4px solid #007acc; background-color: #f9f9f9; font-style: italic; padding: 15px; margin: 20px 0;\"\u003e\n\u003cstrong\u003eTradie Pro Tip:\u003c\/strong\u003e Airflow across a square diffuser is rarely perfectly laminar, especially when the duct connection is offset. The flow straightener inside this hood is your best friend—it acts as an equalizer to ensure your Testo 420 base reads the average volume correctly, regardless of how messy the air coming out of the ceiling actually is.\n\u003c\/blockquote\u003e\n\n\u003ch2 style=\"color: #007acc; border-bottom: 2px solid #f0f0f0; padding-bottom: 8px; margin-top: 35px;\"\u003ePair With\u003c\/h2\u003e\n\u003cp style=\"font-size: 16px; line-height: 1.6; margin-bottom: 20px;\"\u003eTo maximize the utility of your Testo 420 Volume Flow Hood system, consider pairing this replacement hood with the \u003cstrong\u003eTesto 420 Base Unit\u003c\/strong\u003e for complete functionality. For advanced diagnostics or spot-checking, explore our range of \u003cstrong\u003eTesto Smart Probes\u003c\/strong\u003e. Regular calibration with our \u003cstrong\u003eHVAC Shop Calibration Services\u003c\/strong\u003e will also ensure your instrument maintains peak performance and measurement accuracy for years to come.\u003c\/p\u003e\n\n\u003ch2 style=\"color: #007acc; border-bottom: 2px solid #f0f0f0; padding-bottom: 8px; margin-top: 35px;\"\u003eKeep Your Space Clean \u0026amp; Optimized\u003c\/h2\u003e\n\u003cp style=\"font-size: 16px; line-height: 1.6; margin-bottom: 20px;\"\u003eEnsure your HVAC systems operate at their best with precise and reliable airflow measurements. Invest in the Testo 420 Replacement Hood to maintain the integrity and accuracy of your volume flow instrument, guaranteeing optimal air balance and energy efficiency. Trust HVAC Shop for all your professional measurement needs.\u003c\/p\u003e\n\n\u003ch2 style=\"color: #007acc; border-bottom: 2px solid #f0f0f0; padding-bottom: 8px; margin-top: 35px;\"\u003eTechnical Data\u003c\/h2\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; border: 1px solid #eee;\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth style=\"color: #007acc; border: 1px solid #eee; padding: 8px;\"\u003eParameter\u003c\/th\u003e\n\u003cth style=\"color: #007acc; border: 1px solid #eee; padding: 8px;\"\u003eSpecifications\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #eee; padding: 8px; font-weight: bold;\" colspan=\"2\"\u003eGeneral Technical Data\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #eee; padding: 8px;\"\u003eNominal dimensions\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #eee; padding: 8px;\"\u003e915 x 915 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #eee; padding: 8px;\"\u003eFlow straightener\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #eee; padding: 8px;\"\u003eIntegrated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #eee; padding: 8px;\"\u003eCompatibility\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #eee; padding: 8px;\"\u003eFor Testo 420 Volume Flow Hood base\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c!-- Automated FAQ Schema --\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Which Testo device is this replacement hood compatible with?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"This replacement hood is specifically designed for the Testo 420 Volume Flow Hood base unit (Product no. 0563 4200).\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is the benefit of the integrated flow straightener?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The integrated flow straightener is crucial for taming turbulent air, which is common at air outlets. It ensures that the air enters the measurement sensors smoothly and evenly, leading to more accurate and repeatable volumetric flow readings.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What are the dimensions of this hood, and what type of diffusers does it fit?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The hood has nominal dimensions of 915 x 915 mm. This size is specifically tailored to fit standard square ceiling diffusers and grilles commonly found in commercial and institutional buildings.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e","brand":"Testo","offers":[{"title":"Default Title","offer_id":43481891995707,"sku":null,"price":877.41,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0316\/7787\/4235\/files\/0554-4203-perspective-front.webp?v=1777960900","url":"https:\/\/www.hvacshop.com.au\/products\/testo-420-hood-915-x-915-mm","provider":"HVAC Supply Shop","version":"1.0","type":"link"}