Ao Smith 100374577 Condensate Neutralizer Kit 850K Btu CN4-850

Product Description

The AO Smith 100374577 Condensate Neutralizer Kit is a purpose-built solution for managing acidic condensate discharge from high efficiency boilers and water heaters rated up to 850,000 BTU. This kit corresponds to the CN4-850 model and is designed to raise the pH level of condensate before it enters a drain system. High efficiency condensing boilers and water heaters produce acidic condensate as a byproduct of the combustion process. That condensate typically has a pH well below neutral, which can corrode pipes, damage drain systems, and violate local plumbing codes. The AO Smith 100374577 solves this problem by passing the condensate through a media bed of calcite and magnesium oxide, which neutralizes the acidity and raises the pH to a safe discharge level. This is a required step in many commercial and residential installations where local codes mandate neutralization before drain disposal. HVAC technicians and plumbers working on condensing equipment will find this kit straightforward to install. The clear tube body allows for visual inspection of the media without removing the unit, making it easy to monitor media saturation and schedule replacement. Integrated unions with o-rings simplify installation and future servicing. The kit includes PVC adapters for connecting to common drain line configurations and mounting brackets for secure wall or equipment mounting. This neutralizer is well suited for large residential systems, light commercial applications, and any installation running a high efficiency condensing appliance at or below 850,000 BTU input. It is a direct fit accessory for compatible AO Smith equipment and is also used as a universal neutralizer by technicians working across multiple brands. Proper condensate neutralization protects the building infrastructure and keeps the installation code compliant.

• Clear tube body allows visual inspection of media saturation without disassembly
• Calcite and magnesium oxide media neutralizes acidic condensate to safe pH levels for drain discharge
• Includes integrated unions with o-rings, PVC adapters, and mounting brackets for a complete installation

Product Highlights

The AO Smith 100374577 Condensate Neutralizer Kit handles up to 850,000 BTU and delivers a complete, code-compliant condensate neutralization solution with all necessary hardware included for fast, reliable installation.

Product Information

Standard Information

• Brand: AO SMITH
• Manufacturer Part Number: 100374577

Technical Specifications

• Model: CN4-850
• BTU Rating: 850,000 BTU
• Media Type: Calcite and magnesium oxide
• Tube Body: Clear for visual inspection
• Connections: Integrated unions with o-rings
• Included Accessories: PVC adapters, mounting brackets