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ProOne
ProOne Big+ Gravity Water Filter System

ProOne Big+ Gravity Water Filter System

Best price now

$183.96at ProOne Water FiltersChecked 1 h ago

Compared across 4 stores. Prices are checked against each store and labelled with when.

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Price facts

  • Lowest price today: $183.96 at ProOne Water Filters (checked Nov 14, 2026).
  • Checked at 4 stores.

Our take on the ProOne Big+ Gravity Water Filter System

The ProOne Big+ is a gravity-fed countertop water filter built around ceramic and carbon media. It holds a large volume, so a household can fill it once and draw drinking water through the day without plumbing or power. It is NSF/ANSI 42 certified, which covers chlorine taste and odor reduction, not the full contaminant list some rival gravity filters claim. It suits renters and off-grid or emergency use more than buyers chasing the fastest flow or the broadest certified removal claims.

Best forRenters who can't install under-sink plumbingOff-grid, cabin and emergency water useHouseholds that want a large gravity reservoirPeople avoiding power-dependent filtration
Pros
  • No plumbing or electricity needed
  • Large reservoir cuts down on refills
  • Ceramic and carbon media in one system
  • NSF/ANSI 42 certified for chlorine taste and odor
  • Simple gravity operation with few parts to fail
Cons
  • Gravity flow is slow compared with plumbed filters
  • NSF 42 does not certify removal of many contaminants
  • Tall unit takes up counter space
  • Ceramic elements need periodic cleaning and replacement

ProOne Big+ Gravity Water Filter System prices at every store

  • ProOne Water FiltersNew

    In stock

    $183.96Free shippingChecked 1 h ago
    Visit ProOne Water Filters
  • AmazonNew

    Availability unknown

    As an Amazon Associate, Deal.ai earns from qualifying purchases.

    $229.95Free shippingChecked 1 h ago
    Visit Amazon
  • FiltersFast.comNew

    Out of stock

    $229.95Free shippingChecked 1 h ago
    Visit FiltersFast.com
  • Canadian PreparednessNew

    Out of stock

    $289.99Checked 1 h ago
    Visit Canadian Preparedness

Store links may earn us a commission.

ProOne Big+ Gravity Water Filter System price history

Lowest price we've seen: $183.96 on Nov 14 at ProOne Water Filters. Tracked across 4 stores since Nov 14.

About the ProOne Big+ Gravity Water Filter System

The ProOne Big+ is a gravity water filter system. It uses ceramic and carbon filtration technology.

Technology
Ceramic, carbon
Height
22.75 in assembled, without stand
Certification
NSF 42

Specifications

Technology
Ceramic, Carbon
Assembled Height Without Stand
22.75 inch
Nsf Certification
42

Questions and answers

What does NSF/ANSI 42 certification cover?
It certifies reduction of chlorine taste and odor and the materials' safety. It does not certify removal of lead, PFAS, nitrates or most other contaminants.
Does it need electricity or plumbing?
No. Water moves through the ceramic and carbon media by gravity, so it works during outages and off-grid.
How often do the filters need replacing?
Ceramic elements are cleaned periodically and replaced when worn; carbon media is replaced on a schedule. Follow ProOne's maintenance guidance for your water quality.
How does it compare with Berkey-style gravity filters?
It works on the same gravity principle with ceramic and carbon media. Its certified claims are narrower, so check which contaminants matter to you before choosing.
Who is it not right for?
Anyone who wants fast flow at the tap or certified removal of metals and chemicals should look at a plumbed or reverse-osmosis system.
Where is the ProOne Big+ Gravity Water Filter System cheapest?
At ProOne Water Filters, for $183.96, as of our latest check.
Where can I buy the ProOne Big+ Gravity Water Filter System?
4 stores we checked sell it, including ProOne Water Filters, FiltersFast.com, Canadian Preparedness, Amazon.

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