{"product_id":"tjernlund-products-ef-14","title":"Tjernlund Products EF-14 Duct Fan","description":"\u003cp\u003eThe \u003cstrong\u003eTjernlund Products EF-14 Duct Fan\u003c\/strong\u003e is a heavy-duty \u003cstrong\u003e14-inch inline duct booster\u003c\/strong\u003e engineered to rectify airflow deficiencies in high-capacity residential and commercial \u003cstrong\u003eHVAC ventilation systems\u003c\/strong\u003e. Built with a 24-gauge galvanized steel housing and ribbed duct stops, this \u003cstrong\u003e120V axial fan\u003c\/strong\u003e delivers a powerful \u003cstrong\u003e1200 CFM free air\u003c\/strong\u003e rating to overcome static pressure in long \"trunk line\" runs or large-diameter \u003cstrong\u003eflexible ducting\u003c\/strong\u003e. Operating at 1500 RPM with a 1\/25 HP shaded pole motor drawing 1.70 Amps, the EF-14 is designed for continuous duty in environments up to 150°F. It serves as an essential component for balancing temperatures in hard-to-reach zones or as an \u003cstrong\u003eindustrial exhaust fan\u003c\/strong\u003e for non-combustible air. Unlike smaller models, the EF-14 can be mounted directly into main supply lines or branch ducts, utilizing its crimped leading ends for a secure, airtight fit in \u003cstrong\u003egalvanized metal ductwork\u003c\/strong\u003e or flex-runs. For automated operation synchronized with the primary air handler, this unit is compatible with the PS1503 pressure-sensing airstat.\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 \u003cstrong\u003e1200 CFM\u003c\/strong\u003e to significantly boost velocity in 14\" diameter systems.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRugged Construction:\u003c\/strong\u003e Features a 24-gauge \u003cstrong\u003egalvanized steel housing\u003c\/strong\u003e with crimped ends for rapid \u003cstrong\u003einline installation\u003c\/strong\u003e.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh Temperature Tolerance:\u003c\/strong\u003e Safely handles air temperatures up to 150°F, suitable for both heating and cooling cycles.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTrunk Line Versatility:\u003c\/strong\u003e High-torque motor design allows for placement in main supply trunks, not just branch lines.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProfessional Grade Reliability:\u003c\/strong\u003e Utilizing a 1\/25 HP motor designed for long-term service in demanding \u003cstrong\u003eHVACR\u003c\/strong\u003e applications.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cstrong\u003eCommon Questions\u003c\/strong\u003e\n\u003cp\u003e\u003cstrong\u003eCan the EF-14 be used for kitchen range or combustible exhaust?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo, this unit is designed strictly for boosting conditioned air or venting non-combustible fumes. It is not rated for grease-laden air or high-heat combustion byproducts.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow do I control the fan automatically?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWhile the fan requires a 120V hardwired connection, it is typically paired with a Tjernlund PS1503 Duct Airstat, which senses duct pressure to trigger the fan only when the main blower is active.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs this fan compatible with speed controllers?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe EF-14 features a 1500 RPM shaded pole motor; if variable speed is required, ensure the controller is compatible with inductive motor loads to prevent humming or premature motor failure.\u003c\/p\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":43465315287218,"sku":"EF-14","price":286.86,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1838\/2375\/products\/ac-parts-1000x1000_large_eade0341-3ac0-4094-941b-1a764e6cf53d.jpg?v=1700611029","url":"https:\/\/www.gsistore.com\/products\/tjernlund-products-ef-14","provider":"GSIstore","version":"1.0","type":"link"}