Hot Water Sediment Post-Filter System

Main Content Starts Here

Post-Filter Systems


Here to Help: Our home water experts are standing by to answer your questions.

Product Selection
Hot Water Sediment Post-Filter System - 10"
Flow Rate{gpm}: 8
Hot Water Sediment Post-Filter System - 20"
Flow Rate{gpm}: 12


Ideal for homes with tankless water heaters, the Pentair Hot Water Sediment Post-Filter System reduces sediment buildup that is often associated with heating elements. This system traps sand, dirt, dust, and other debris by suspending solids as small as 10 microns that may precipitate out during the heating process of water. This means you can reduce clogged showerheads and faucets and improve your water pressure.
  • Reduces clogging that occurs in showerheads and faucets as a result of sediment coming from your tankless water heater
  • Two unique models to choose from to meet the demands of your home based on your home size (number of bathrooms)
Starting at:
You need to choose options for your item.
Select SKU to Add to Cart


Benefits of a Hot Water Sediment Post-Filter System

The nature of tankless hot water heaters causes the water to heat up instantly which can cause the water to boil and in turn precipitate out suspended solids that may be present in the water supply. The combination of a 10-micron filter and glass-reinforced nylon housings create a system that is efficient and resilient. The high-temperature filter housing is an economical alternative to stainless and carbon steel housings.

  • Can withstand water temperatures of up to 160-degrees Fahrenheit
  • Housings constructed of glass-reinforced nylon
  • Includes a 10-micron filter cartridge to filter sand, dirt, sediment and other debris



Item #ImageStagesInlet Connection TypeFlow Rate {gpm}Micron Size {µ}Water SourceEst. Filter LifeWater ProblemSKU Features
PHT10 1 3/4" NPT 8 10 Any water source 6-9 months Sediment/Debris No Electricity Required
PHT20 3/4" NPT 12 10 Any water source 12 months Sediment/Debris No Electricity Required

What's Included

  • Filter Housing
  • Spanner Wrench
  • Mounting Bracket with Screws
  • 10 Micron Post-Filter (10” or 20”)
  • ¾” Brass Shutoff Valve
  • O-ring
  • Owner’s Manual / Installation Guide

NOTE: Protect against freezing to prevent cracking of the filter and water leakage.

Installation Recommendation

DIY+ or Professional Installation


Water Education Center

Beyond taste and odor, the volatile chemical nature of chlorine means it can react and form potentially harmful byproducts. But, how much chlorine is ‘safe’?  

Learn About Chlorine

Chloramine is a disinfectant that consists of five parts chlorine and one part ammonia. So, in a sense, it’s kind of “chlorine plus.” Find out how it gets into your water and how you can treat it.

Learn About Chloramines

Soft water doesn’t have to be hard. Learn about what causes hard water and identify solutions to help reduce the related water woes

Learn More About Hard Water

Learn more about common water problems and how to tackle them in our Water Education Center.

Still Not Sure? Call us to speak with a Pentair Water Solutions home water expert.
We are here to answer your questions.

Free shipping over $49

We deliver solutions to your door, cost-free!

Money Back Guarantee

Try a water solution and if you don't love it, send it back.

Applies to select products purchased on or

Back to top of page