Model NBT-23

The Model NBT-23 condensate neutralizer is a compact tank neutralizer designed for residential installations and is easily serviceable with its removable lid. Its proprietary baffle design enables sufficient soak time while minimizing the neutralizer’s footprint and is rated up to 2.4 GPH condensate (300 MBH).

NBT-23 Download Center

NBT-Series Technical Info

NBT-Series I & O Manual

NBT-23 Product Drawing

The NBT-Series is our versatile line of tank neutralizers that ranges from residential to light commercial installations. The NBT-Series models are easily serviceable with a removable lid, which enables fast and easy inspection and maintenance. NBT-Series neutralizers are well-suited for most standard operating site conditions.

  • With its small footprint and low-inlet, the NBT-23 is designed for most residential appliances.
  • The compact NBT-23 enables versatile installation options, either wall or floor-mounted.

The Model NBT-23 is suitable for most residential installations of high-efficiency, gas-fired appliances such as condensing boilers, furnaces, and hot water heaters rated approximately 300 MBH.



For properties with condensing appliances, a condensate neutralizer is an essential component to prevent corrosion of facilities, wastewater infrastructure, and the surrounding environment.

Many property owners upgrade to high-efficiency heating systems specifically to reduce their impact on the environment. Without neutralizing its acidic condensate, a condensing heating appliance can cause environmental and property damage, including:

  • Pollution of surrounding environment and groundwater
  • Destruction of wastewater infrastructure, such as sewers, pipes, and septic systems
  • Erosion of floors, drains, and concrete foundations
  • Corrosion of pipes in homes and other buildings

Sizing a Neutralizer

Model NBT-23 Specifications

Part #2009


Flow Rate

Inlet/Outlet Port


pH Power Pellets® Refill


2.4 GPH


Wall or Floor

NBT-23R part #1111

JJM® condensate neutralizers must be routinely serviced to remain effective. Once a year, Service Technicians should inspect the neutralizer and replace the JJM® pH Power Pellets® (neutralizing media) to ensure continued protection and code compliance.

When you register a JJM® condensate neutralizer, the neutralizer will be under warranty against defects in materials and workmanship for one year. The warranty does not cover the issues that result from misuse, improper installation, and/or failure to replace the pH Power Pellets® as instructed.