Neutralization Replacement Kit

RTG20239BU Neutralizer Media Replacement – Rheem Tankless Condensate Management

The Rheem RTG20239BU is a factory-authorized neutralization replacement kit for use with condensing Rheem tankless gas water heaters. This kit contains the media cartridge used to neutralize acidic condensate before discharge, helping to maintain code compliance and extend the life of drain lines, pumps, and downstream infrastructure.

Condensing water heaters produce low-pH condensate as a byproduct of high-efficiency operation. This condensate must be neutralized to protect plumbing systems and satisfy local discharge regulations. The RTG20239BU is designed as a direct replacement for the neutralizer cartridge in Rheem’s integrated condensate management assemblies.

Application and Function

• Part Number: RTG20239BU
• Type: Neutralizer cartridge replacement kit
• Function: Raises condensate pH to prevent acidic discharge damage
• Compatibility: Designed for Rheem condensing tankless gas water heater models with integrated neutralization chambers

Component Details

• Replacement cartridge contains neutralizing media (typically calcium carbonate or similar)
• Installs in the original neutralization chamber housing
• Required for maintaining warranty and performance in systems where condensate treatment is specified

Installation Guidelines

Neutralizer replacement should be performed during routine service or as indicated by manufacturer maintenance intervals. Frequency may vary based on condensate volume and water chemistry.

Installation involves isolating the water heater, removing the existing spent cartridge, and inserting the new RTG20239BU unit into the factory housing. System must be verified for proper condensate drainage and neutralization following reassembly. Always follow model-specific service instructions and dispose of used media in accordance with local environmental regulations.

Best Practices for Contractors

• Include neutralizer inspection and replacement in annual service calls for condensing tankless units
• Monitor for reduced flow, acidic smell, or pH-related corrosion downstream as indicators for replacement
• Carry spare cartridges for RTG20239BU on service vehicles supporting Rheem condensing systems

Advantages

• OEM product ensures material compatibility and fitment
• Supports system efficiency and compliance with condensate discharge requirements
• Prevents scale and corrosion in drainage systems downstream of the heater
• Fast, tool-free installation when used with Rheem’s integrated condensate assemblies