3M Aqua-Pure Whole House Sanitary Quick Change Water Filter System AP904, Reduces Sediment, Chlorine Taste and Odor, and Scale, Heavy Duty

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• Question : What is the capacity of the replacement cartridge?
  Answer : The replacement cartridge has a 100,000 gallon capacity at high flow rates of 10 gpm and even a peak flow rate of 20 gpm.
• Question : What is the frequency of replacing the filter cartridge?
  Answer : The filter cartridge should be replaced every 12 months, at 100,000 gallons of use, or sooner if a noticeable reduction in flow occurs.
• Question : What is the material used in the head assembly?
  Answer : The head assembly is made of 304 stainless steel, which is a corrosion-resistant material that provides long service life.
• Question : Will it help with hard water? Calcium and Magnesium?
  Answer : Yes, it will help with hard water. The water filtration system works effectively on hard water. You can feel the difference immediately.
• Question : Does this filter system remove coliform bacteria?
  Answer : The filter cannot remove coliform bacteria. You need to get your water tested from a reliable source like 3M to determine whether this filter suits your situation.
• Question : Is this suitable for well water? The water has a heavy mineral smell. I want to say it smells like sulphur.
  Answer : Yes, it is suitable for well water. You can use a less expensive pre-filter to extend the life of the filter.
• Question : What is the difference between the ap917hd and the ah917hd-s filter?
  Answer : The ah917hd-s filter has a scale inhibitor.
• Question : Has anyone compared the performance of this filter to a big blue 3 stage (sediment, carbon, carbon)?
  Answer : Yes, the AP917HD-S filter has better performance compared to a big blue 3 stage filter. The pre-filter helps to prolong the life of the main filter.
• Question : why does this cost $50 more now than 3 months ago (May 2022)?
  Answer : We have no information, but it might be due to various factors like change in government policies, manufacturing cost, etc.
• Question : Does this come with the installation/mounting hardware, etc?
  Answer : No, this filter does not come with installation/mounting hardware. One has to buy a separate startup kit for the same.
• Question : Do you need a prefilter system in front of this unit to trap dirt and rust?
  Answer : No, as this unit is quite large, and a pre-filter is not required. However, one can use a flow-down filter in front of this filter to stop large particulates rust from accumulating on the screen.
• Question : how does this work with iron reduction?
  Answer : This filter works effectively on iron reduction. The water will become crystal clear, and iron staining will no longer be an issue.