Nu-calgon NUCAL-4173-04 Evaporative Cooler Scale Inhibitor

Product Description

The NU-CALGON NUCAL-4173-04 is a scale inhibitor treatment formulated for evaporative coolers rated up to 6500 CFM. Evaporative coolers function by drawing warm, dry ambient air across a water-saturated media pad, inducing evaporation and lowering air temperature. As water evaporates, dissolved minerals remain in the recirculating water and accumulate as scale deposits on the media pad. Left untreated, scale buildup restricts airflow, reduces evaporation surface area, and degrades cooling efficiency. NUCAL-4173-04 is designed to interrupt this scale-forming cycle and extend the service life of evaporative media pads. HVAC technicians and evaporative cooler service pros use this product as part of routine seasonal maintenance.

This scale inhibitor is intended for use in residential and commercial evaporative coolers, commonly called swamp coolers, operating in arid or semi-arid climates where dry-bulb temperatures of 90 degrees F or higher coincide with wet-bulb temperatures of 75 degrees F or below. It is also applicable to evaporative pre-coolers installed on air-cooled mechanical condensers to improve condenser efficiency. This product is suited for any evaporative system using recirculating water and cellulose, synthetic, or rigid media pads where mineral scale accumulation is a concern.

Key Features

• Scale inhibitor formulation prevents mineral precipitation in recirculating evaporative cooler water
• Rated for evaporative cooler systems up to 6500 CFM
• Helps maintain open media pad surface area for consistent airflow and evaporation efficiency
• Applicable to both direct-cool comfort air conditioning evaporative units and evaporative pre-coolers on air-cooled condensers
• Supports routine preventive maintenance programs in dry-climate HVAC service

Compatibility

Designed for use in evaporative coolers and swamp cooler systems rated up to 6500 CFM that utilize recirculating water systems. Also compatible with evaporative pre-cooler applications on air-cooled mechanical condensers. Specific equipment model compatibility is not defined in available product data.

Installation Notes

Application is typically performed by an HVAC technician or evaporative cooler service professional as part of seasonal startup or ongoing maintenance. Shut off the evaporative cooler and isolate the water supply before servicing the recirculating water system or media pads. Follow the manufacturer dosage instructions on the product label and adhere to local water treatment and discharge regulations. Do not mix with other chemical treatments unless confirmed compatible by the manufacturer.

Technical Specifications

• Type: Scale Inhibitor
• Maximum System Airflow: 6500 CFM
• Application: Evaporative Cooler Water Treatment

Standard Information

• Brand: NU-CALGON
• Manufacturer Part Number: NUCAL-4173-04