{"product_id":"field-controls-46281500-dehumidistat-control","title":"Field Controls 46281500 Dehumidistat Control","description":"\u003cp\u003eThe \u003cstrong\u003eField Controls 46281500 Dehumidistat Control (EDH-1)\u003c\/strong\u003e is a critical component for moisture management in residential foundations and crawl spaces. Engineered specifically for integration with the \u003cstrong\u003eEL-1 Eliminator Foundation Vent Fan\u003c\/strong\u003e, this 120V OEM controller automates secondary ventilation cycles based on precise relative humidity (RH) thresholds. By actively monitoring ambient moisture levels, the EDH-1 prevents the accumulation of stagnant, humid air that leads to wood rot, mold growth, and compromised structural integrity. This \u003cstrong\u003emechanical humidistat\u003c\/strong\u003e can be wired as a standalone controller or in series with a temperature limit switch to ensure the \u003cstrong\u003ecrawl space vent fan\u003c\/strong\u003e only operates under optimal atmospheric conditions.\u003c\/p\u003e\n\n\u003cp\u003eFor high-performance \u003cstrong\u003eHVAC crawl space moisture control\u003c\/strong\u003e, the EDH-1 supports a parallel load of up to two Eliminator units, allowing contractors to scale ventilation for larger footprints without additional complex circuitry. The adjustable dial allows for field-calibration of the RH setpoint, typically optimized between 45% and 60% depending on local climate demands. This \u003cstrong\u003efoundation vent control\u003c\/strong\u003e is housed in a robust, site-ready enclosure designed for durability in unconditioned environments. Utilizing an \u003cstrong\u003eautomatic humidity controller\u003c\/strong\u003e like the 46281500 ensures \u003cstrong\u003eindoor air quality\u003c\/strong\u003e is protected from damp odors and soil gases while maximizing the efficiency of the \u003cstrong\u003eEliminator EDH-1\u003c\/strong\u003e system.\u003c\/p\u003e\n\n\u003cstrong\u003eKey Benefits\u003c\/strong\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrecise Humidity Regulation:\u003c\/strong\u003e Automatically activates \u003cstrong\u003efoundation vent fans\u003c\/strong\u003e when moisture surpasses setpoints to maintain a dry, stable crawl space.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDual Unit Capacity:\u003c\/strong\u003e Rated for 120-volt operation and capable of controlling two \u003cstrong\u003eField Controls EL-1\u003c\/strong\u003e units on a single circuit.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVersatile Wiring:\u003c\/strong\u003e Designed to replace existing \u003cstrong\u003etemperature switches\u003c\/strong\u003e or work in tandem with them for hybrid temperature\/humidity logic.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStructural Protection:\u003c\/strong\u003e Mitigates long-term moisture damage and fungal growth by promoting consistent cross-ventilation in damp-prone areas.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGenuine OEM Reliability:\u003c\/strong\u003e Exact \u003cstrong\u003eField Controls 46281500\u003c\/strong\u003e replacement part ensures full compatibility and standard industrial performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cstrong\u003eCommon Questions\u003c\/strong\u003e\n\u003cp\u003e\u003cstrong\u003eCan the EDH-1 be used with crawl space fans from other manufacturers?\u003c\/strong\u003e\u003cbr\u003e\nThe EDH-1 is technically designed as an OEM accessory for the Field Controls Eliminator series. While it functions as a standard 120V switch, mounting and electrical compatibility are only guaranteed for the \u003cstrong\u003eEL-1 Eliminator\u003c\/strong\u003e units.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eIs this unit sufficient for a 2,000 square foot crawl space?\u003c\/strong\u003e\u003cbr\u003e\nThe controller can manage the load for two fans, which is typically sufficient for 2,000 square feet (assuming one EL-1 per 1,000 square feet). Always verify local code requirements for total CFM and air changes per hour.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhere is the best location to mount the dehumidistat?\u003c\/strong\u003e\u003cbr\u003e\nIt should be installed in a location that represents the average humidity of the crawl space, away from the immediate discharge or intake of the fans to prevent short-cycling the \u003cstrong\u003ehumidity control system\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":"Field Controls","offers":[{"title":"Default Title","offer_id":47066354450610,"sku":"46281500","price":75.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1838\/2375\/files\/Pic_4dde7d17-0991-4652-b3af-dad9b144aa68.png?v=1771008460","url":"https:\/\/www.gsistore.com\/en-ca\/products\/field-controls-46281500-dehumidistat-control","provider":"GSIstore","version":"1.0","type":"link"}