{"product_id":"mrcool-uhk20-20kw-electric-heat-kit-with-dual-circuit-breakers-for-universal-series-r-454b","title":"MRCOOL UHK20 20kW Electric Heat Kit with Dual Circuit Breakers for Universal Series (R-454B)","description":"\u003ch2\u003eMRCOOL UHK20 20kW Electric Heat Kit with Dual Circuit Breakers – Universal Series (R-454B)\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eMRCOOL UHK20 20kW Heat Kit\u003c\/strong\u003e provides maximum supplemental electric heat for \u003cstrong\u003eMRCOOL Universal Series R-454B air handlers\u003c\/strong\u003e. With dual built-in circuit breakers and factory-engineered components, this high-capacity heat kit installs inside compatible Universal indoor units to deliver powerful comfort in extreme cold weather.\u003c\/p\u003e\n\u003ch2\u003eProduct Overview\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eMRCOOL UHK20 Electric Heat Kit\u003c\/strong\u003e is the top-output auxiliary heating option for the Universal Series lineup. Designed for installations that demand serious electric backup heat, the 20kW capacity ensures rapid temperature recovery and stable heating performance when outdoor conditions are at their harshest.\u003c\/p\u003e\n\u003cp\u003eAccording to the Universal Series Heat Kit specifications, the UHK20 uses \u003cstrong\u003edual circuit breakers\u003c\/strong\u003e, \u003cstrong\u003efour heating relays\u003c\/strong\u003e, and multiple power cord groups to safely handle the higher electrical load. It mounts directly inside approved Universal air handlers and connects using the included wiring diagram and hardware, making it a clean, integrated solution for residential or light commercial systems that need maximum auxiliary heat capacity.\u003c\/p\u003e\n\u003ch2\u003eFeatures\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eHigh-output 20kW auxiliary electric heat capacity\u003c\/li\u003e\n\u003cli\u003eDual built-in circuit breakers for safety and protection\u003c\/li\u003e\n\u003cli\u003eFactory-certified accessory for MRCOOL Universal Series (R-454B)\u003c\/li\u003e\n\u003cli\u003eDelivers strong heating support in extreme low-temperature conditions\u003c\/li\u003e\n\u003cli\u003eInternal mount design keeps installation clean and streamlined\u003c\/li\u003e\n\u003cli\u003eIncludes wiring diagram, breaker label, gasket, and mounting hardware\u003c\/li\u003e\n\u003cli\u003eCompatible with 208\/230V single-phase power\u003c\/li\u003e\n\u003cli\u003eOEM-grade heating elements and components for long-term reliability\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eCompatible With\u003c\/h2\u003e\n\u003cp\u003eThe UHK20 Heat Kit is compatible with the following \u003cstrong\u003eMRCOOL Universal Series R-454B Air Handlers\u003c\/strong\u003e:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eUAH18036-O\u003c\/li\u003e\n\u003cli\u003eUAH18048-O\u003c\/li\u003e\n\u003cli\u003eUAH18060-O\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e(Compatibility based on the MRCOOL Universal Series Heat Kit model selection chart.)\u003c\/p\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMRCOOL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSeries\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUniversal 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