Is the ProOne Big+ worth it?

For a no-plumbing 3-gallon stainless filter, yes. It is certified for lead and microplastics and costs about 40% less than Berkey systems. At $49.99 at eBay as of November 6, 2026, it is a strong value.

How does it compare with a Berkey?

Both are gravity-fed stainless filters with similar capacity. ProOne claims a 40% lower price and uses ceramic plus carbon elements. Berkey has a longer track record and a wider accessory range.

How often do I change the filters?

ProOne rates filter life at up to 6 months, depending on water quality and daily use. Heavily sedimented well water will shorten that.

Does it need plumbing or power?

No. You fill the upper chamber by hand and gravity pulls water through the filters. That makes it usable during outages, camping and travel.

The stainless steel filter body, a stainless 304 spigot and a stainless steel rack. Filters are included with the unit.

The lowest new price seen is $49.99 at eBay as of November 6, 2026, against four stores selling it new. Watch for seasonal sales and compare across stores before buying.

Where is the ProOne Big+ cheapest?

At eBay, for $49.99, 73% under what the other stores charge, as of our latest check.

What do buyers say about the ProOne Big+?

Buyers like: Water tastes clean, fresh and pure; many say better than bottled; Removes chlorine smell and taste from tap water; Easy to use and low maintenance; easy to clean. Common complaints: Spigot drips occasionally; Filters are a bit fragile.

Where can I buy the ProOne Big+?

4 stores we checked sell it, including eBay, ProOne Water Filters, FiltersFast.com, Amazon.

ProOne Big+ Price History: $49.99 at eBay, 73% Under Others

What reviewers say

4.7 / 5Google Shopping · 14 ratings

Owners rate the ProOne Big+ highly, with a 4.7 out of 5 from 14 Google Shopping ratings. They describe cleaner-tasting water, sturdy stainless construction and easy upkeep. Complaints center on a dripping spigot and fragile filters.

What people mention

Water tastePraisedOwners say the water tastes clean and fresh and beats bottled water.
Build qualityPraisedBuyers describe thick, heavy-duty stainless steel and fine craftsmanship.
Setup and upkeepPraisedNo plumbing or electricity is needed, and cleaning is reported as easy.
SpigotCriticisedSome owners report the spigot drips now and then.
Filter durabilityCriticisedFilters are described as somewhat fragile to handle.
Chlorine odorMixedThe upper chamber can smell of chlorine where tap water is heavily treated.

From ProOne Water Filters

Reduces microplastics and lead, at a 40% lower price than Berkey
Features ceramic and carbon technologies, unlike most filters
Filter lifespan up to 6 months
No electricity or plumbing required
Certified by IAPMO R&T against NSF/ANSI/CAN 372, NSF/ANSI 42, 53 and 401
Includes stainless 304 spigot and stainless steel rack

Materials: Infused bacteriostatic outer ceramic shell and proprietary carbon-based granular media inside the core of the filter; stainless steel housing (304 spigot and ra
Sizing: 9.25" diameter; 11.75" nested height, 22.75" assembled height without stand
Care: Clean the entire filtration system once a month and replace the filter when necessary; see the instruction manual for further details on cleaning and maintenanc
Guarantee: 30-Day Risk-Free Guarantee, 5-year limited warranty (Stainless), 1-year limited warranty (ProOne G3.0); filters come with full factory warranty
Returns: ALL SALES ARE FINAL. NO RETURNS ACCEPTED.
Shipping: Shipping calculated at checkout
Packs: Filter options of 1, 2 or 3 ProOne G3.0 filter elements; finishes in Polished or Brushed
In the box: Stainless 304 spigot, Stainless steel rack