Updated September 30, 2026 · SmartHomeCue Editorial Team
Doulton vs IBBL
What sets them apart
| Compare | Doulton ReviewSee alternativesSee alternatives |  IBBL |
|---|---|---|
| Filter system | Under sink | Countertop |
| Reference models | Doulton Kingfisher Under Sink Water Filter System with Biotect Ultra; Doulton Countertop Water Filter System with Biotect Ultra; Doulton HIP DUO Under Sink Water Filter System with Biotect Ultra; Doulton HIP TRIO Under Sink Water Filter System with Biotect Ultra | IBBL E-Due Eletrônico Prata Bivolt, IBBL E-Due Freedom Eletrônico Grafite Bivolt, IBBL FR600 Speciale com Compressor Prata, IBBL Viváx Touch com Compressor Prata |
| Price from | €26.45 | R$225 |
| Cartridge price | €50.95 | R$129 |
| Cartridge life (l) | 2,300 | 3,000Higher |
| Filter cost per year | €101.90 | R$258 |
| Warranty | 5 yearsHigher | 1 year |
| Markets | GB | BR |
| Certification scope | Biotect Ultra cartridge certified in the Kingfisher Biotect Ultra Inline Water Filter System, plus NSF/ANSI/CAN 372; WRAS approved products | Not confirmed |
| PFAS and lead reduction | Yes | Not confirmed |
Same on both: Installation required (Yes).
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Key differences
- IBBL scores higher overall: 9.4 vs 9.3.
- Cartridge life (l) is higher at IBBL: 3,000 vs 2,300.
- Warranty is higher at Doulton: 5 years vs 1 year.
- Markets: only Doulton offers GB.
- Markets: only IBBL offers BR.
Our verdict on each
Doulton
Doulton suits households in the GB market that want a certified under-sink filter without paying reverse osmosis money. Entry prices start at €26.45, and the strength is that opening cost plus stated certification, while replacement cartridges at €50.95 each are the running cost to plan for.
IBBL
IBBL is a Brazilian countertop purifier brand that suits households already set up for installation and happy to handle filter changes on their own. Entry price of BRL 225 sits near the middle of this site's water filter pricing, with yearly filter cost of BRL 258 as the figure to budget on.
Score breakdown
| Area | Doulton | IBBL |
|---|---|---|
| Cost | 9.2Entry at €26.45 is low, but €50.95 per cartridge and €101.90 a year push the running cost up. | 9.7HigherEntry price of BRL 225 is mid-range, while the yearly filter cost of BRL 258 sits in the strongest part of our ranking. |
| Offer | 9.3HigherReference models span under sink and countertop Biotect Ultra systems, and lead and PFAS reduction is stated. | 9.1The countertop format carries a 1 year warranty, but installation is required, so plan for setup as well as the unit. |
| Trust | 9.6NSF/ANSI 42, 53 and 401 certification and WRAS approvals, a 5 year warranty, and support on email, phone and help centre. | Not confirmed |
By the numbers
| Fact | Doulton | IBBL |
|---|---|---|
| Cartridge life (l) | 2,300 | 3,000 |
| Warranty | 5 years | 1 year |
Where they rank in our lists
| Ranking | Doulton | IBBL |
|---|---|---|
| Water filters | 8 of 68 | 6 of 68 |
Also worth a look
Culligan Consumer Products has warranty at 1 to 10 years, against 5 years for Doulton and 1 year for IBBL.
Culligan Consumer Products reviewEvery fact side by side
| Fact | Doulton | IBBL |
|---|---|---|
| NSF/ANSI standards | 42, 53, 401 | Not confirmed |
| Legal entity | Doulton Water Filters Limited | Not confirmed |
| Headquarters | United Kingdom | Brazil |
| Founded | 1826 | Not confirmed |
| Support channels | Email, Phone, Help centre | Not confirmed |
Where each stands against the rest
| Fact | Doulton | IBBL | Median |
|---|---|---|---|
| Cartridge life (l) | 2,300below the median | 3,000above the median | 2,862.5 |
| Warranty | 5 yearshighest quarter | 1 yearbelow the median | 2 years |
Median across 47 listed brands.
Pros and cons
Doulton
Pros
- Entry price of €26.45 ranks at position 6 of 52 brands, so the opening outlay is low.
- Certification is stated: NSF/ANSI 42, 53 and 401 standards on the cartridges, plus WRAS approved products in the range.
- Lead and PFAS reduction is claimed for the cartridges, which is the reason many households look at a filter at all.
Cons
- Renewal cost is the catch: the Biotect Ultra cartridge is €50.95 and the yearly filter cost is €101.90, ranking 29 of 46 brands.
- Cartridge life of 2,300 litres sits below the site median 2,512.5 litres, so swaps arrive sooner than with the longer lived filters listed here.
- Installation is required for the under sink format, so it is not a countertop drop in.
IBBL
Pros
- countertop format means the unit sits on the worktop rather than under a sink, so you choose where it goes and where the water line runs.
- A cartridge life of 3,000-litre keeps the gap between filter buys wide, and a cartridge priced at BRL 129 keeps each swap affordable.
- Yearly filter cost of BRL 258 puts consumables in the strongest part of our ranking, at 5 of 46 brands.
Cons
- Installation is required on the range, so BRL 225 is the start of the spend rather than the whole of it.
- A single market, BR, means buyers outside Brazil have no local dealer and no local warranty service to lean on.
- Cartridge life of 3,000-litre ranks at 12 of 26 brands, so cartridge endurance is the weaker side of the spec.
Who each suits
Doulton
Who it suits
- Households in the GB market that want a under sink filter and care about stated certification.
- Buyers who budget for the running cost, since cartridge price and the yearly figure set the refill bill from the start.
- People who want phone and written help, as support runs on email, phone and help centre.
Who should look elsewhere
- Not for anyone set on reverse osmosis: Culligan Consumer Products runs reverse osmosis systems, so that buyer should compare there instead.
- Not for kitchens without a plumbed spot, since installation is required for the under sink formats; IBBL offers a countertop setup that needs no fitting.
- Not for buyers who prefer the reverse osmosis route Waterdrop（EU）takes, which filters differently from the Biotect Ultra cartridges Doulton uses.
IBBL
Who it suits
- Households in Brazil with worktop space free, since the countertop format has to be installed rather than dropped in like a jug.
- People planning a budget line for upkeep, because BRL 258 a year is the number that keeps returning and BRL 225 is the number that does not.
- Shoppers who want choice inside one range, since IBBL lists plain purifiers and compressor-equipped models under the same countertop format.
Who should look elsewhere
- Anyone outside BR, because a single market means no local dealer, no local warranty service and no easy returns.
- Renters and anyone who cannot have a unit fitted, because installation is required on this range.
- Buyers set on a jug or a nothing-fitted format, who would be better served by Lifestraw and its jug system.
Current offers
Doulton
Current offer
Discount code
20% off replacement filters with Subscribe & Save: 20%
Discount applies to subscription orders for replacement filters
Source, checked September 30, 2026
Discount code
Sign up to the newsletter and get 10% off: 10%
Email newsletter signup offer shown site-wide in the footer; no end date stated
Source, checked September 30, 2026
Country by country
| Country | Doulton | IBBL |
|---|---|---|
| Brazil | No | Yes |
| United Kingdom | Yes | No |
Questions about each
Doulton
How much does a Doulton water filter cost to start with?+
Doulton's range starts at €26.45, and that entry figure sits at position 6 of 52 brands listed, so the opening outlay is among the lower ones here. The systems sold are under sink units built around Biotect Ultra cartridges, so the starting cost buys the housing and the filtration cartridge.
What do Doulton replacement cartridges cost over a year?+
A Biotect Ultra replacement cartridge is €50.95, and the yearly filter cost for the range is €101.90. That running figure is the one to plan for, and it ranks 29 of 46 brands listed, which puts Doulton toward the dearer end once refills are counted.
IBBL
How much does an IBBL purifier cost to buy?+
The price to start with is BRL 225, and that is a purchase price for the unit rather than a plan fee. After that the regular spend is filter changes, with a cartridge at BRL 129 and filters adding up to BRL 258 across a year. If you are comparing brands, hold both numbers side by side instead of only the entry figure.
What does it cost to run an IBBL purifier each year?+
Filters run at BRL 258 a year, based on a cartridge priced at BRL 129. That is the figure to put into a household budget, because it repeats every year while the purchase price does not. Our ranking places IBBL at 5 of 46 brands on yearly filter cost, so running cost is where this line earns its keep.