{"product_id":"lg-kusxa421a","title":"LG KUSXA421A LGRED Single Zone Mini Split Outdoor Condenser Unit with 42000 BTU Cooling Capacity, 48000 BTU Heating Capacity and Gold Fin Protection in White","description":"\u003cp style=\"margin-bottom: 0px\"\u003eLG continues to demonstrate global leadership in innovation and technology with their advancements in home comfort solutions. The LGRED° Heat ductless heat pump system boasts superior heating performance in extreme cold weather climates. The KUSXA421A is a single zone mini split outdoor condenser capable of supplying ductless heating and cooling to any room in your home. With inverter technology and quiet operation this well-rounded mini split outdoor condenser is an easy choice for any system.\u003c\/p\u003e\n\u003cp style=\"margin-bottom: 0px\"\u003e\u003c\/p\u003e\n\u003cul style=\"margin-bottom: 0px\"\u003e\n\u003cli\u003eGold Fin Condenser\u003c\/li\u003e\n\u003cli\u003eInverter Technology\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"margin-bottom: 0px\"\u003e\u003c\/p\u003e\n\u003cp style=\"margin-bottom: 0px\"\u003e\u003cstrong\u003eEnhanced Connectivity\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"margin-bottom: 0px\"\u003eLG's new R-32 mini split units require a 5-conductor cable (Not Included) instead of the standard 4-conductor, improving communication reliability and enabling a new leak detection feature.\u003c\/p\u003e\n\u003cp style=\"margin-bottom: 0px\"\u003e\u003c\/p\u003e\n\u003cp style=\"margin-bottom: 0px\"\u003e\u003cstrong\u003eLow Ambient Operations\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"margin-bottom: 0px\"\u003eThis outdoor unit supports cooling operations down to 5 degrees Fahrenheit and heating operations down to -13 degrees Fahrenheit. There is also a defrost feature, which removes frost from the condenser coil in frigid conditions.\u003c\/p\u003e\n\u003cp style=\"margin-bottom: 0px\"\u003e\u003c\/p\u003e\n\u003cp style=\"margin-bottom: 0px\"\u003e\u003cstrong\u003eIntegrated Base Pan Heater\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"margin-bottom: 0px\"\u003eBase pan heaters come factory installed on all LGRED° outdoor condensers in order to mitigate the risk of damage caused by freezing condensate.\u003c\/p\u003e\n\u003cp style=\"margin-bottom: 0px\"\u003e\u003c\/p\u003e\n\u003cp style=\"margin-bottom: 0px\"\u003e\u003cstrong\u003eQuiet Design\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"margin-bottom: 0px\"\u003eThanks to a brushless direct current motor and a twin rotary compressor, the unit is significantly quieter than traditional air conditioning systems. These components reduce mechanical sound, electrical sound, and vibrations within the unit.\u003c\/p\u003e\n\u003cp style=\"margin-bottom: 0px\"\u003e\u003c\/p\u003e\n\u003cp style=\"margin-bottom: 0px\"\u003e\u003cstrong\u003e*Note: Indoor Unit Required to Operate\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003eMatching Products\u003c\/strong\u003e \u003c\/p\u003e\n\u003cul style=\"margin-bottom: 0px\"\u003e\n\u003cli\u003eMatching 4-Way Cassette Indoor Unit KNSCB421A\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eMatching Mid Static Duct Indoor Unit KNSJB421A\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003eWhy Buy LG KUSXA421A LGRED Single Zone Mini Split Outdoor Condenser Unit\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul style=\"margin-bottom: 0px\"\u003e\n\u003cli\u003eLGRED° Heat Technology: Engineered for superior cold-climate performance, this system delivers strong, reliable heating even in extreme winter conditions.\u003c\/li\u003e\n\u003cli\u003eLow Ambient Heating: Capable of maintaining warmth in freezing temperatures, the unit operates efficiently in outdoor conditions as low as -13°F.\u003c\/li\u003e\n\u003cli\u003eBuilt-In Base Pan Heater: A factory-installed base pan heater prevents condensate from freezing within the unit, protecting against cold-weather damage and ensuring consistent operation.\u003c\/li\u003e\n\u003cli\u003eInverter Technology: Featuring a variable-speed compressor and electronic expansion valve, the system precisely controls refrigerant flow to reduce energy use and maintain stable indoor temperatures.\u003c\/li\u003e\n\u003cli\u003eQuiet Design: With a brushless direct current motor and twin rotary compressor, the unit minimizes operational noise, running as quietly as 52 dB—ideal for residential comfort.\u003c\/li\u003e\n\u003cli\u003eGold Fin Protection: The heat exchanger is coated with LG’s anti-corrosive Gold Fin finish, enhancing durability by resisting damage from moisture, salt, and pollutants.\u003c\/li\u003e\n\u003cli\u003eImproved Communication: The unit utilizes a 5-conductor communication cable (sold separately) for greater system reliability and includes a built-in refrigerant leak detection feature.\u003c\/li\u003e\n\u003cli\u003eTrusted Certifications: This model is Energy Star listed, CSA-listed, and AHRI certified—assuring that it meets rigorous standards for energy efficiency, safety, and performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"margin-bottom: 0px\"\u003e\u003cstrong\u003eQ: What are the operating temperature ranges?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"margin-bottom: 0px\"\u003eA: The unit operates in:\u003c\/p\u003e\n\u003cul style=\"margin-bottom: 0px\"\u003e\n\u003cli\u003eCooling Mode: Operates between 5°F and 118°F\u003c\/li\u003e\n\u003cli\u003eHeating Mode: Operates between -13°F and 64°F\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"margin-bottom: 0px\"\u003e\u003c\/p\u003e\n\u003cp style=\"margin-bottom: 0px\"\u003e\u003cstrong\u003eQ: What are the key features of the LGRED Single Zone Mini Split Outdoor Condenser Unit?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"margin-bottom: 0px\"\u003eA: Notable features include:\u003c\/p\u003e\n\u003cul style=\"margin-bottom: 0px\"\u003e\n\u003cli\u003eHigh efficiency with inverter technology, a variable-speed compressor, and an electronic expansion valve for precise refrigerant control.\u003c\/li\u003e\n\u003cli\u003eQuiet operation, using a brushless DC motor and twin rotary compressor to reduce sound and vibration.\u003c\/li\u003e\n\u003cli\u003eEnhanced durability via a corrosion-resistant Gold Fin™ coating on the heat exchanger.\u003c\/li\u003e\n\u003cli\u003eCold climate readiness, including a factory-installed base pan heater to prevent freezing and damage.\u003c\/li\u003e\n\u003cli\u003eSmart connectivity, requiring a 5-conductor cable for stable communication with the indoor unit and featuring built-in leak detection.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"margin-bottom: 0px\"\u003e\u003c\/p\u003e\n\u003cp style=\"margin-bottom: 0px\"\u003e\u003cstrong\u003eQ: What accessories are required for installation?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"margin-bottom: 0px\"\u003eA: The following components are typically needed:\u003c\/p\u003e\n\u003cul style=\"margin-bottom: 0px\"\u003e\n\u003cli\u003eLine set: Double-insulated tubing for refrigerant flow\u003c\/li\u003e\n\u003cli\u003eDrain tubing: For removing condensate\u003c\/li\u003e\n\u003cli\u003eDisconnect box and whip kit: For electrical connection to your home’s fuse box\u003c\/li\u003e\n\u003cli\u003eConnecting wire: To deliver power and signals from the condenser to the indoor unit\u003c\/li\u003e\n\u003cli\u003eOutdoor condenser pad or wall bracket: To keep the unit off the ground and ensure stable mounting\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"margin-bottom: 0px\"\u003e\u003c\/p\u003e\n\u003cp style=\"margin-bottom: 0px\"\u003e\u003cstrong\u003eQ: What are the electrical requirements for this unit?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"margin-bottom: 0px\"\u003eA: Electrical requirements are:\u003c\/p\u003e\n\u003cul style=\"margin-bottom: 0px\"\u003e\n\u003cli\u003eVoltage: 208–230V\u003c\/li\u003e\n\u003cli\u003ePhase: Single-phase\u003c\/li\u003e\n\u003cli\u003eFrequency: 60Hz\u003c\/li\u003e\n\u003cli\u003eWiring for Outdoor Unit (ODU): 3 x 12 AWG cable required\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"margin-bottom: 0px\"\u003e\u003c\/p\u003e\n\u003cp style=\"margin-bottom: 0px\"\u003e\u003cstrong\u003eQ: How does inverter technology improve performance?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"margin-bottom: 0px\"\u003eA: Inverter technology uses a variable-speed compressor to continuously adjust refrigerant flow, maintaining consistent temperatures and eliminating energy-wasting on\/off cycles. This provides better comfort and energy efficiency than traditional systems.\u003c\/p\u003e\n\u003cp style=\"margin-bottom: 0px\"\u003e\u003c\/p\u003e\n\u003cp style=\"margin-bottom: 0px\"\u003e\u003cstrong\u003eQ: What is the purpose of the Gold Fin protection?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"margin-bottom: 0px\"\u003eA: The Gold Fin coating on the heat exchanger prevents corrosion, extending the lifespan of the unit—especially beneficial in coastal or high-humidity environments.\u003c\/p\u003e\n\u003cp style=\"margin-bottom: 0px\"\u003e\u003c\/p\u003e\n\u003cp style=\"margin-bottom: 0px\"\u003e\u003cstrong\u003eQ: How does the base pan heater function in cold climates?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: The factory-installed base pan heater prevents water from freezing in the drain pan. This helps protect the unit and ensures reliable operation in sub-freezing temperatures.\u003c\/p\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh Performance in Both Heating \u0026amp; Cooling\u003c\/strong\u003e\u003cbr\u003e\nThe unit provides strong capacity for large spaces or high load, and works across a wide temperature range including cold outdoor conditions.\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow-Ambient Capability\u003c\/strong\u003e\u003cbr\u003e\nAble to operate even when it’s cold outside (down to −13°F for heating), which is great if you live in a place with cold winters.\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurability Features\u003c\/strong\u003e\u003cbr\u003e\nGold Fin coating helps resist corrosion, especially useful in humid, coastal or salty environments. The base pan heater helps prevent freezing issues.\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLong Piping Flexibility\u003c\/strong\u003e\u003cbr\u003e\nThe ability to run up to ~246 ft between indoor and outdoor units gives flexibility in system layout and installation.\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModern Inverter Technology\u003c\/strong\u003e\u003cbr\u003e\nVariable speed compressor, electronic expansion valve, helps with energy efficiency, smoother operation, and reduces extremes in startup current.\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnergy Star Certified\u003c\/strong\u003e\u003cbr\u003e\nHelps reduce running cost (efficient operation), especially when you use both heating and cooling often.\n\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eSound Level\u003c\/strong\u003e\u003cbr\u003e\n56 dB is reasonable for its capacity, but it’s still audible. For placement near bedrooms or quiet outdoor spaces, this could be noticeable.\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh Initial Cost \u0026amp; Installation Complexity\u003c\/strong\u003e\u003cbr\u003e\nAs a large-capacity outdoor unit, costs for both equipment and professional installation can be significant. Also, need proper electrical infrastructure (breaker, wiring etc).\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePerformance Drop in Extreme Weather\u003c\/strong\u003e\u003cbr\u003e\nAlthough it’s rated for low ambient heating, as with most heat pumps, capacity will drop as outdoor temperature goes well below the rated minimum.\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRequires Matching Indoor Equipment \u0026amp; Accessories\u003c\/strong\u003e\u003cbr\u003e\nThe condenser is just one part of the system; you’ll need compatible indoor unit(s), line sets, remote control wiring, condensate drainage etc, which adds to overall cost.\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize \u0026amp; Weight\u003c\/strong\u003e\u003cbr\u003e\nIt’s heavy and large; mounting or pad placement must be stable; logistics for delivery, handling etc become more challenging.\n\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cstrong\u003eConclusion\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eLG KUSXA421A\u003c\/strong\u003e is a solid choice if you need a powerful, reliable outdoor condenser for a ductless system in a large space, especially if you live in an area with cold winters. Its strengths lie in its capacity, durability (Gold Fin, base pan heater), efficient inverter tech, and long piping flexibility.\u003c\/p\u003e\n","brand":"LG","offers":[{"title":"KUSXA421A","offer_id":46885331403008,"sku":"KUSXA421A","price":4880.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0740\/2287\/9488\/files\/KUSXA421A_p171263.jpg?v=1754405223","url":"https:\/\/secure.shopappliances.com\/products\/lg-kusxa421a","provider":"Shop Appliances","version":"1.0","type":"link"}