Navien PeakFlowE Replacement Cartridge GXXX001726, Anti‑Scale


Quantity Price Each
2 Items $126.00
3+ Items $119.00
* Note:

Weight: 1.00 lbs
MPN: GXXX001726

Rush Order:

PeakFlowE Replacement Media Cartridge part number GXXX001726
For the 9.625" version. NOT for the the 19.875" version.


• This is for the current, second version of the PeakFlowE
• 10 inches shorter than the first version of PeakFlow

Frequently Asked Questions ("FAQ")

Q1: How often should I change the cartridge?
A1: Navien recommends changing the cartridge at least once every two years. If your household uses a higher volume of heated water, such as with frequent baths, or more than 4 showers per day, then change the cartridge proportionately more often.

Q2: Do you have instructions on how to change the peak flow GXXX001726 water filter cartridge?
A2: Yes, see page 4 of the PeakFlowE manual here.

All items for sale on are genuine and new, not used. The NAVIEN, KD NAVIEN, PeakFlow and PeakFlowE Anti‑Scale System are trademarks are the property of Navien America, Inc. and/or KyungDong Navien. Navien is not affiliated with and does not sponsor, endorse or warranty/support or products on this website.

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