{"title":"HVAC Thermostats","description":"\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eMaintain precise temperature control and improve comfort with replacement HVAC thermostats from Total Hearth. Thermostats are the control center of your heating and cooling system, helping regulate indoor temperatures while supporting efficient system operation.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eOur collection includes programmable thermostats, non-programmable thermostats, digital thermostats, smart thermostats, and replacement temperature controls compatible with a variety of residential HVAC systems. Whether you're replacing a faulty thermostat, upgrading an older control, or improving energy efficiency, you'll find quality solutions designed for dependable performance.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eA properly functioning thermostat can help improve comfort, reduce energy consumption, and ensure reliable heating and cooling operation throughout the year.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eFree USA shipping on orders over $100.\u003c\/span\u003e\u003c\/p\u003e","products":[{"product_id":"20606","title":"HVAC Transformer 75VA 120\/208\/240\/480V to 24V – Mars 50321 – NBK-20606","description":"\u003ch2\u003eTransformer 75VA 120\/208\/240\/480V to 24V – NBK-20606\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eNBK-20606 Transformer\u003c\/strong\u003e is a dependable HVAC control transformer designed to step down high-voltage power to a safe \u003cstrong\u003e24V output\u003c\/strong\u003e for use in low-voltage heating and cooling applications.\u003c\/p\u003e\n\u003cp\u003eWith multi-tap primary inputs including \u003cstrong\u003e120V, 208V, 240V, and 480V\u003c\/strong\u003e, this transformer offers flexible compatibility across a wide range of HVAC systems, making it an ideal replacement for OEM Mars and Packard models.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e75VA Rating:\u003c\/strong\u003e Provides stable power for HVAC control circuits\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMulti-Voltage Input:\u003c\/strong\u003e Supports 120\/208\/240\/480V primary connections\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e24V Secondary Output:\u003c\/strong\u003e Standard low-voltage power for thermostats and relays\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect Replacement Fit:\u003c\/strong\u003e Compatible with Mars 50321 and Packard equivalents\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSKU:\u003c\/strong\u003e 20606\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e HVAC, Miscellaneous\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Brand:\u003c\/strong\u003e Mars\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplaces OEM:\u003c\/strong\u003e 50321\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Rating:\u003c\/strong\u003e 75 VA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrimary Voltage:\u003c\/strong\u003e 120\/208\/240\/480V\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSecondary Voltage:\u003c\/strong\u003e 24V\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDirect Replacement For\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMars:\u003c\/strong\u003e 50321\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackard:\u003c\/strong\u003e PF52475\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhy Choose the NBK-20606 Transformer?\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eNBK-20606\u003c\/strong\u003e is a reliable solution for replacing worn or failed HVAC transformers. Designed for consistent low-voltage performance, it helps ensure proper operation of control boards, thermostats, contactors, and other essential HVAC components.\u003c\/p\u003e\n\u003ch3\u003eInstallation Tips\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAlways disconnect power before servicing HVAC electrical components.\u003c\/li\u003e\n\u003cli\u003eVerify the correct primary voltage tap before wiring.\u003c\/li\u003e\n\u003cli\u003eConfirm secure terminal connections to prevent voltage drop.\u003c\/li\u003e\n\u003cli\u003eInstallation should be completed by a qualified HVAC technician.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003ePairs Well With\u003c\/h3\u003e\n\u003cp\u003eThermostats, Control Boards, Contactor Relays, HVAC Fuse Kits, Low-Voltage Wiring Accessories\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSPECIAL ORDER NOTICE:\u003c\/strong\u003e This item is sourced through our special order program. Please allow 1–2 business days for processing prior to shipment.\u003c\/p\u003e","brand":"Mars","offers":[{"title":"Default Title","offer_id":52401228480880,"sku":"SO-20606","price":56.46,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0595\/4463\/3444\/files\/20606-50321-1080x743.webp?v=1770855919"}],"url":"https:\/\/total-hearth.com\/collections\/hvac-thermostats.oembed","provider":"Total Hearth","version":"1.0","type":"link"}