{"product_id":"nu-calgon-4291-90-nu-brite-4x-ultra-concentrate-condenser-coil-cleaner-1-quart","title":"Nu-Calgon 4291-90 – Nu-Brite 4X Ultra-Concentrate Condenser Coil Cleaner (1 Quart)","description":"\u003ch1\u003eNu-Calgon 4291-90 – Nu-Brite® 4X Ultra-Concentrate Condenser Coil Cleaner (1 Quart)\u003c\/h1\u003e\n\u003cp\u003eThe \u003cstrong\u003eNu-Calgon 4291-90 (Nu-Brite® 4X)\u003c\/strong\u003e is a high-performance, \u003cstrong\u003eNon-Acid Alkaline Condenser Coil Cleaner\u003c\/strong\u003e delivered in a space-saving ultra-concentrate format. This professional-grade solution provides the same industrial-strength cleaning and brightening power as the classic \"Blue\" Nu-Brite, but in a refined 4X formula that allows one quart to do the work of a full gallon of standard concentrate.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eTechnical Performance:\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eUtilizing a specialized surfactant and alkaline builder system, \u003cstrong\u003eNu-Brite® 4X\u003c\/strong\u003e produces a dense, expanding foam that physically pushes deeply embedded soil, grease, and oxidation out of the fin packs. It is specifically engineered for air-cooled condensers, cutting through the stubborn \"baked-on\" grime found on outdoor units. The formula provides the superior \"brightening\" results typically associated with hazardous hydrofluoric acid cleaners, but with a much safer, non-acid chemical profile.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eKey Features and Function:\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFeature 1: 4X Ultra-Concentrate Efficiency:\u003c\/strong\u003e One 32 oz. bottle mixes with water to create 1 gallon of standard concentrate, reducing storage space and shipping weight.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFeature 2: High-Foaming Alkaline Action:\u003c\/strong\u003e Expanding foam penetrates thick coils to lift and remove grease, cottonwood, and heavy dirt.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFeature 3: Non-Acid Fin Brightener:\u003c\/strong\u003e Safely restores the original \"bright\" look of aluminum fins, maximizing heat transfer and lowering system head pressure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFeature 4: Advanced Degreasing Power:\u003c\/strong\u003e Specifically designed to emulsify petroleum-based oils and environmental films that trap dust.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eProduct Details and Key Specifications:\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 4291-90\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Nu-Calgon (Genuine)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Type:\u003c\/strong\u003e 4X Concentrate Liquid Coil Cleaner\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBottle Size:\u003c\/strong\u003e 1 Quart (32 Ounces)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMixing Ratio:\u003c\/strong\u003e Add 1 quart of 4X to 3 quarts of water to make 1 gallon of standard concentrate.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRinse Required:\u003c\/strong\u003e Yes (Thorough Water Rinse)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Outdoor Air-Cooled Condensers ONLY\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShipping Weight:\u003c\/strong\u003e 2.8 lbs\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e🛠️ \u003cstrong\u003eHVAC Depot Pro Tip: The \"Dilution Math\"\u003c\/strong\u003e\n\u003c\/h2\u003e\n\u003cp\u003eTo use this with a standard 4:1 pump sprayer, first mix the entire quart of 4291-90 with 3 quarts of water in a separate container to create \"standard\" Nu-Brite. Then, use that mixture as you normally would. This 4X version is a lifesaver for technicians who have limited van space but need the heavy-duty cleaning power for multiple commercial rooftop units.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eCross-Reference \u0026amp; Compatibility:\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003e4291-90\u003c\/strong\u003e is the compact version of the industry-standard blue cleaner:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndustry Refs:\u003c\/strong\u003e Nu-Brite 4X, 429190, Blue Coil Cleaner Concentrate\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplications:\u003c\/strong\u003e Residential condensers, commercial RTUs, and heavy-duty refrigeration racks.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Nu-Brite","offers":[{"title":"Default Title","offer_id":52451512975723,"sku":"681001429191","price":34.69,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0922\/9683\/9531\/files\/NC-4291-92.jpg?v=1770329514","url":"https:\/\/tophvacparts.com\/products\/nu-calgon-4291-90-nu-brite-4x-ultra-concentrate-condenser-coil-cleaner-1-quart","provider":"HVAC Parts and Equipment Depot Open To Homeowners and Contractors","version":"1.0","type":"link"}