{"product_id":"tjernlund-products-ef-8","title":"Tjernlund Products EF-8 Duct Fan","description":"\u003cp\u003eThe \u003cstrong\u003eTjernlund EF-8 Duct Fan\u003c\/strong\u003e is a performance-driven solution for addressing airflow deficiencies in residential and commercial 8-inch round ductwork. Engineered to deliver up to \u003cstrong\u003e325 CFM\u003c\/strong\u003e, this axial duct booster compensates for static pressure drops in long branch runs, ensuring consistent thermal distribution in hard-to-heat or cool areas. Constructed with a \u003cstrong\u003e24-gauge galvanized steel housing\u003c\/strong\u003e and a high-velocity \u003cstrong\u003ealuminum prop fan\u003c\/strong\u003e, the EF-8 is built for durability and vertical or horizontal mounting flexibility in sheet metal or flexible ducting systems. \u003c\/p\u003e\n\n\u003cp\u003eOperating on a standard 120V circuit with a \u003cstrong\u003e1.1 Amp draw\u003c\/strong\u003e, the EF-8 features a permanently lubricated C-frame motor rated for temperatures up to 150°F. For veteran contractors, this \u003cstrong\u003einline duct booster fan\u003c\/strong\u003e represents a reliable \"set-and-forget\" component when paired with the optional \u003cstrong\u003ePS1503 Duct Airstat\u003c\/strong\u003e or \u003cstrong\u003eSC-1 speed controller\u003c\/strong\u003e. Whether you are remediating a poorly balanced multi-zone system or installing a dedicated \u003cstrong\u003eHVAC exhaust fan\u003c\/strong\u003e, the EF-8 provides the velocity needed to overcome resistance without the noise profile of traditional industrial blowers.\u003c\/p\u003e\n\n\u003cstrong\u003eKey Benefits\u003c\/strong\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Airflow Delivery:\u003c\/strong\u003e Rated at 325 CFM (free air) to effectively boost supply or exhaust velocity in \u003cstrong\u003e8-inch ducting\u003c\/strong\u003e.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRugged Construction:\u003c\/strong\u003e Features a \u003cstrong\u003ecorrosion-resistant galvanized steel\u003c\/strong\u003e housing and metal fan blades for long-term reliability in plenum environments.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlexible Installation:\u003c\/strong\u003e Compact 9-inch depth allows for easy integration into existing branch lines using standard \u003cstrong\u003educt clamps or foil tape\u003c\/strong\u003e.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLow Energy Consumption:\u003c\/strong\u003e High-efficiency \u003cstrong\u003e56-watt motor\u003c\/strong\u003e minimizes operational costs while maximizing \u003cstrong\u003eHVAC system efficiency\u003c\/strong\u003e.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBroad Compatibility:\u003c\/strong\u003e Suitable for use in both warm air heating and central air conditioning systems with \u003cstrong\u003ethermal protection\u003c\/strong\u003e up to 150°F.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cstrong\u003eCommon Questions\u003c\/strong\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCan this fan be used for automatic operation?\u003c\/strong\u003e Yes. While the standard EF-8 is a plug-in unit, it is frequently paired with a \u003cstrong\u003epressure-sensing switch\u003c\/strong\u003e like the PS1503 to synchronize operation with the main furnace blower.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIs the motor speed adjustable?\u003c\/strong\u003e Professional installers can utilize the \u003cstrong\u003eSC-1 variable speed controller\u003c\/strong\u003e to fine-tune CFM output and minimize air noise at the register.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWhere should the fan be positioned in the run?\u003c\/strong\u003e For optimal efficiency and noise reduction, install the booster near the \u003cstrong\u003eoutlet end of the duct\u003c\/strong\u003e, but maintain at least 10 duct diameters from the register if using a pressure control.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong style=\"color: red;\"\u003eThis item is not eligible for free shipping.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eDisclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.\u003c\/p\u003e","brand":"Tjernlund Products","offers":[{"title":"Default Title","offer_id":43465314009266,"sku":"EF-8","price":155.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1838\/2375\/files\/Pic_18e3df49-7c4c-4562-a76f-cfb3d60018d6.png?v=1701813797","url":"https:\/\/www.gsistore.com\/en-ca\/products\/tjernlund-products-ef-8","provider":"GSIstore","version":"1.0","type":"link"}