Description
Nu-Calgon 4SI Cartridge — Condensate Drain Treatment Replacement
The Nu-Calgon 9606-51 4SI Cartridge is a purpose-built replacement cartridge designed for use with Nu-Calgon’s 4SI condensate drain treatment system. Engineered to keep condensate drain pans and drain lines free of biological growth — including algae, slime, mold, and mildew — this cartridge helps maintain system efficiency, prevent costly drain line clogs, and protect indoor air quality in residential and light commercial HVAC applications.
Why Use the 4SI Cartridge?
Condensate drain pans are a prime environment for biological growth. Left untreated, algae and slime can block drain lines, cause water overflow, trigger safety switches, and contribute to poor indoor air quality. The Nu-Calgon 4SI Cartridge provides continuous, passive treatment that works around the clock — no mixing, no measuring, no mess.
Key Features
- Replacement cartridge for the Nu-Calgon 4SI condensate drain treatment system
- Controls algae, slime, mold, and mildew growth in drain pans and lines
- Continuous passive treatment — no measuring or mixing required
- Helps prevent drain line clogs and condensate overflow
- Supports indoor air quality by reducing biological contamination at the source
- Suitable for residential and light commercial HVAC systems
- Easy cartridge swap for ongoing maintenance programs
Application
The Nu-Calgon 9606-51 4SI Cartridge is ideal for HVAC technicians and service contractors looking to provide preventive maintenance on air handling units, fan coil units, and split system air handlers. Incorporating drain pan treatment into routine service visits helps reduce callback rates and extends the life of drain system components.
About Nu-Calgon
Nu-Calgon is a trusted leader in HVAC/R specialty chemicals, offering a comprehensive line of cleaners, treatments, and maintenance products relied upon by professional contractors across the industry.
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