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Replacement Media Refill, Navien Commercial Condensate Neutralizer

Original price $104.95 - Original price $109.90
Original price
$104.95 - $109.90
Current price $104.95


Buy this refill to replace the condensate neutralizing agent in the GXXX001325 Commercial Condensate Neutralization Tank

Also compatible with all high-volume or cascaded condensate producing appliances: Navien, Noritz, Rheem, AO Smith, Rinnai, Weil-McLain, Rinnai.

This replacement neutralizing agent (limestone or magnesium oxide pellets) prevents damage to your drain pipes and sewers. It neutralizes the acidic, corrosive condensation wastewater produced by your condensing propane or natural gas water heater or boiler.

As a by-product of burning propane or natural gas, condensate is semi-acidic and may harm pumps, sewer systems, waste water drain pipes. Boilers, tankless water heaters, and furnaces of 93% or greater efficiency produce 1.6 gallons of acidic condensate wastewater for every 400,000 BTUs of fuel burned.

This refill media neutralizes the semi-acidic condensate by increasing its pH levels from pH 3 to 4 to closer to neutral pH 7, before being discharged to your drain.

County building codes often require a condensate neutralizer at the drain line of high efficiency natural gas or propane appliances.


• Prevents acidic condensate from corroding sewer systems and drains
• Recommended for use with all types of propane and natural gas appliances

Frequently Asked Question ("FAQ")

Q1: How often should I replace the neutralizing media?
A1: Once per year, using pH test strip paper or an electronic pH meter, check the pH level at the outlet of the neutralizer tank. Replace the neutralizing media when the pH level drops below the minimum level specified by the local water authority. The minimum level is commonly set at pH 6.0.

Dump the used media into a plastic bag and dispose. Pour new media into the tank.


The Navien GXXX001329 refill media is compatible with the following heaters:

Most condensing tankless water heaters
NPE-S tankless water heater series including NPE-180S, NPE-210S, NPE-240S
NPE-A tankless water heater series including NPE-180A, NPE-210A, NPE-240A
NCB and NCB-E Combi-Boiler series including NCB-150, NCB-180, NCB-210 and NCB-240; NCB-150E, NCB-180E, NCB-210E and NCB-240E
NHB Heating Boilers including NHB-55, NHB-80, NHB-110 and NHB-150
NR series including NR-180, NR-210 and NR-240; NR-180A, NR-210A and NR-240A
NP series NP-180A, NP-210A, NP-240A
CH-ASME Combi-Boiler series including CH-180-ASME, CH-210-ASME and CH-240-ASME
CH-ASME Combi-Boiler series including CH-180-ASME, CH-210-ASME and CH-240-ASME
Any other condensate-producing heater by brands such as Noritz, Marey, Takagi, AO Smith, State, Reliance, Bosch, Eccotemp, Paloma, Rinnai, Rheem, etc.

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Consumer purchases through the internet or other e-commerce channels shall void Navien's warranty. As with all products we sell, all Navien products we sell are brand new, recently manufactured ("factory fresh"). We guarantee delivery in perfect condition to our customers.