Nu-Calgon

Nu-Calgon is a manufacturer of specialty chemical products for the HVAC, refrigeration, and heating industries, supplying coil cleaners, refrigeration oils, system flush products, leak sealants, leak detection dyes, and maintenance chemicals to the trade. Nu-Calgon has served the HVAC and refrigeration markets for more than 55 years and is headquartered in St. Louis, Missouri, where the company operates a 40,000 square foot distribution facility. Nu-Calgon products include the EasySeal refrigerant circuit leak sealant, the EasyDye UV-fluorescent leak detection dye, and the RX11 Flush system flush product, as well as coil cleaners, ice machine cleaners, descalers, and water treatment products. HVAC technicians, refrigeration contractors, and service companies specify Nu-Calgon where verified, trade-grade chemical products are required for equipment maintenance, service, and repair across refrigerant and hydronic systems.

Nu-Calgon Product Lines

Coil Cleaners and Descalers

Nu-Calgon's coil cleaner line covers both evaporator and condenser coil cleaning applications in HVAC and refrigeration service. Nu-Calgon coil cleaners are formulated to remove dirt, grease, and biological deposits from fin-and-tube heat exchanger coils without damaging aluminum fins, copper tubing, or protective coatings. Descaler products in the Nu-Calgon line address mineral scale deposits on water-cooled condensers, evaporative coolers, and hydronic heat exchangers. The coil cleaner and descaler line is a routine service consumable for HVAC maintenance contractors performing preventive maintenance on commercial and residential equipment. Nu-Calgon coil cleaners are available in both foaming and non-foaming formulations to match the application and equipment type.

EasySeal and EasyDye Leak Products

Nu-Calgon EasySeal is a refrigerant circuit sealant designed for sealing small leaks in air conditioning and refrigeration system copper tubing, fittings, and evaporator coils without disassembling the refrigerant circuit. EasySeal is compatible with current and upcoming refrigerants and is formulated to work within the sealed refrigerant circuit. Nu-Calgon EasyDye is a UV-fluorescent leak detection dye that circulates with the refrigerant and marks the leak location under UV light for technician identification. FlareMate is a Nu-Calgon flare joint lubricant and sealant designed to improve the seal on refrigerant flare connections during installation. The EasySeal and EasyDye product line addresses refrigerant leak management across the service and repair stages of HVAC/R work.

RX11 Flush and System Cleaning Products

Nu-Calgon RX11 Flush is a refrigerant circuit flush product designed to remove oil, moisture, and contaminants from HVAC and refrigeration system piping during equipment changeouts and compressor replacements. Flushing the refrigerant circuit removes residual oil from the failed or replaced compressor before new oil and refrigerant are introduced, reducing the risk of oil contamination in the new compressor. Nu-Calgon system cleaning products also include ice machine cleaners for commercial ice machines and water treatment chemicals for evaporative cooling towers and hydronic systems. Where coil cleaners address the external surface of heat exchangers, RX11 Flush and system cleaning products address the internal refrigerant circuit and water-side components.

Why Contractors Specify Nu-Calgon

HVAC technicians and refrigeration contractors specify Nu-Calgon because the company has developed and supplied specialty chemicals to the HVAC and refrigeration trade for more than 55 years, with product formulations verified for compatibility with refrigerant system materials and components. Nu-Calgon EasySeal and EasyDye are specifically developed to work with new refrigerants including A2L and HFO formulations, keeping the product line current with industry refrigerant transitions. The RX11 Flush product addresses the compressor replacement workflow requirement for a clean circuit flush before recharging, which reduces the risk of new compressor contamination failures. Nu-Calgon's Green Select line provides biodegradable coil cleaning and maintenance options for contractors working on projects with environmental material restrictions. Nu-Calgon products are available through HVAC supply distributors including SupplyHouse.

How to Choose a Nu-Calgon Product

The primary selection variable for a Nu-Calgon product is the service task. Coil cleaning calls for Nu-Calgon evaporator or condenser coil cleaner in foaming or non-foaming formulation matched to the coil type and contamination level. Refrigerant leak detection calls for Nu-Calgon EasyDye. Small refrigerant circuit leak sealing calls for Nu-Calgon EasySeal. Refrigerant circuit flushing during compressor replacement calls for Nu-Calgon RX11 Flush.

For coil cleaner selection, identify the coil type and contamination: Nu-Calgon offers alkaline and acid-based formulations for different deposit types. Foaming coil cleaners expand on contact with the coil surface to increase dwell time and cleaning action; non-foaming cleaners are used where foam control is required around electrical components or in enclosed spaces. Confirm the cleaner pH and chemistry is compatible with the coil fin material (aluminum, copper, or coated).

For system flush selection, confirm that Nu-Calgon RX11 Flush is compatible with the refrigerant and oil type in the system being flushed. Consult the Nu-Calgon technical data sheet for RX11 Flush regarding oil compatibility and the amount of flush required for the system volume. Follow the Nu-Calgon recommended flush procedure before recharging the system with new refrigerant and oil.

FAQs

Where is Nu-Calgon headquartered and how long has it been in business?

Nu-Calgon is headquartered in St. Louis, Missouri, where the company operates a 40,000 square foot distribution facility. Nu-Calgon has served the HVAC and refrigeration specialty chemical market for more than 55 years.

What warranty does Nu-Calgon offer on its products?

Nu-Calgon product warranty and satisfaction terms are available at nucalgon.com. For specific warranty or guarantee information on a Nu-Calgon coil cleaner, EasySeal, or other product, consult the product data sheet or contact Nu-Calgon directly.

What is the difference between Nu-Calgon EasySeal and EasyDye?

The difference between Nu-Calgon EasySeal and EasyDye is the product function. EasySeal is a refrigerant circuit sealant that circulates with the refrigerant and seals small leaks in the system without disassembly. EasyDye is a UV-fluorescent leak detection dye that circulates with the refrigerant and marks the leak location under UV light so the technician can identify where the leak is occurring. EasySeal seals the leak; EasyDye locates it.

What is Nu-Calgon RX11 Flush used for?

Nu-Calgon RX11 Flush is used to clean the internal refrigerant circuit during compressor replacements and equipment changeouts, removing residual oil, moisture, and contaminants before new refrigerant and oil are introduced. Flushing the circuit with RX11 reduces the risk of oil contamination in the replacement compressor from incompatible or degraded oil left in the system after a compressor failure.

Are Nu-Calgon products compatible with A2L refrigerants?

Nu-Calgon EasySeal and EasyDye are formulated for compatibility with current and upcoming refrigerants including A2L and HFO formulations, supporting the HVAC/R industry refrigerant transition. Confirm compatibility of a specific Nu-Calgon product with the refrigerant in the system by consulting the Nu-Calgon technical data sheet at nucalgon.com.

What is the Nu-Calgon Green Select product line?

The Nu-Calgon Green Select line is a series of biodegradable coil cleaning and maintenance products designed for contractors working on projects with environmental material restrictions or green cleaning requirements. Green Select products are formulated to be natural, biodegradable, and non-toxic to plants, animals, and aquatic life while meeting the performance requirements of HVAC maintenance applications.