The Replacement Parts Database: what fits, how often and what it costs a year

Prices and specs last checked by Look Into on 10 November 2026 · next check 10 February 2027 · how we picked

What the database has found so far

1. One water filter cartridge, two capacities. On 10 November 2026 the Aqua Optima Evolve+ was described as lasting 30 days and 100 litres on Morrisons' listing, and 30 days and 150 litres on Tesco's. At Tesco's £12.00 for three, that is 2.7p a litre if the cartridge does 150 litres and 4.0p if it does 100. Same cartridge, same price, a 50% gap in cost per litre.
2. "Fits all BRITA jugs" has an asterisk somewhere. BRITA's product copy says MAXTRA PRO cartridges fit all BRITA jugs and the BRITA Flow. Argos's BRITA brand page says all older and new jugs "except the classic range". We could not settle which is right from BRITA's own cartridge page, so both BRITA rows are flagged.
3. An Oral-B iO handle locks you into iO heads. Oral-B UK says iO handles take only iO heads. On the pack prices we read on 28 October 2026, four heads a year cost £17.00 on iO Ultimate Clean (8 pack) against £8.10 on Pro CrossAction (10 pack, on a deal that day): about double, every year you own the handle.
4. A dehumidifier can carry a filter bill. Meaco says the H13 HEPA filter in its Arete range needs replacing roughly every three months. At Meaco's own £39.99 for three, that is £53.32 a year for the 18L, 20L and 25L models, and £26.65 for the 6L.
5. The standard cartridge is the dear one. Canon's standard PG-575 black works out at 14p a page against 6.9p on the XL. Epson's standard 604 is 10.7p against 6.8p on the XL. The printer takes both; the page price roughly halves.
6. Two Pride scooter pages disagree with themselves on battery size. On 10 November 2026, Pride UK's GoGo Elite Traveller 2.0 page gave the range for an 18Ah battery and listed the battery as 17Ah. Its GoGo Elite Traveller Sport page gave the range for a 20Ah battery and listed an 18Ah one. A replacement has to match the pack you take out, so read its label, not the web page.
7. Stannah puts its stairlift batteries at 3 to 5 years. Stannah says its lifts run on two 12V 7.4Ah sealed lead-acid batteries (two 12V 12Ah on the 260 on long stairs and on heavy duty models), that they generally last around 3 to 5 years, and that a technician should fit them. It publishes no price.

These rows come from products Look Into has already researched, so they are a selection, not a sample of the market.

Check what fits, and what it costs a year

Pick a category and the product you own. The checker shows the part, what it does not fit, the maker's interval and our source. You can change the price, the pack size and how often you change it, and the working is shown under the result.

The database: every record

Jump to: Water filter jugs Dehumidifiers Air purifiers Electric toothbrush heads Printers Mobility: stairlifts and scooters Download the data

Cost a year is the unit price multiplied by the number of changes the maker's interval implies. Where the maker gives a range, so do we. Prices are held where they were on the date read, so a yearly figure is an estimate.

Water filter jugs

Dehumidifiers

Air purifiers

Electric toothbrush heads

Printers

Mobility: stairlifts and scooters

"Search Amazon UK" links are affiliate links and open a search for the part number, not a single listing. As an Amazon Associate, Look Into earns from qualifying purchases. That never changes a row. We show no Amazon price here: the prices above are dated readings, and the live price is on Amazon.

Conflicts we could not settle

A row is flagged when two sources that should agree do not. We publish both readings and do not pick one.

• BRITA MAXTRA PRO and the Classic range. BRITA's copy on Sainsbury's listing says the cartridge "fits all BRITA jugs and BRITA Flow". Argos's BRITA brand page excludes the Classic range. BRITA's own cartridge page did not list compatible jugs when we read it.
• Aqua Optima Evolve+ capacity. 100 litres on Morrisons' listing, 150 litres on Tesco's, both for a 30 day cartridge. Our water filter jug guide used 150 litres.
• Pride GoGo Elite Traveller 2.0 battery. 18Ah in the range line, 17Ah in the batteries line, on the same Pride UK page. Pride UK lists the model as discontinued.
• Pride GoGo Elite Traveller Sport battery. Range quoted for 20Ah, battery listed as 18Ah (12.5kg), on the same Pride UK page.
• Aqua Optima Evolve+ in BRITA jugs. The fit is Aqua Optima's claim. BRITA does not list third-party cartridges, and its PerfectFit feature is described as a guarantee for MAXTRA PRO cartridges.

If you make one of these products and can point us to the page that settles it, write to hello@lookinto.co.uk and we will update the row and date the change.

How this database is built

• One row, one claim, one source. A row records what a maker says fits, on a page we read, on a date. We do not infer fit from shape, photos or reviews.
• Three statuses. "Verified at maker" means the maker's own page says it. "Conflict flagged" means two readings disagree and both are shown. "Not maker-verified" means the row rests on an insurer, dealer or listing and is there for the price arithmetic, not as proof of fit.
• Maker first. The maker's product page, support page or manual comes first. Where a row rests on a retailer listing carrying the maker's copy, the evidence column says so.
• Intervals are the maker's. "Up to 12 months" is recorded as a minimum of one change a year, not as a promise.
• Prices are dated readings. The maker's own shop where it sells the part, otherwise the price we read for an existing Look Into guide on the date shown.
• The arithmetic is shown. Unit price is pack price divided by pack size. Cost a year is unit price multiplied by changes a year. Cost per page is cartridge price divided by the maker's page yield.
• Nothing is overwritten silently. When a row changes, the old reading stays in the change log with its date.

What this database cannot tell you

• Whether a part physically fits a model we have not listed. Absence from the table is not a "no".
• Whether a third-party part performs like the genuine one. We have tested neither.
• How long a filter lasts in your home. Smoke, pets, hard water and heavy use all shorten it.
• Today's price. Every price here is a reading on the date shown.
• Which battery an Acorn or Handicare stairlift takes. We did not find a maker page stating it, so those lifts are not listed.
• Vacuum bags, coffee machine filters and household batteries are not in this edition. We found retailer fit lists for them but not the maker's page, so they stay out until we do.

Change log

• 10 November 2026, version 1.1.0: 6 mobility records added (LI-RP-022 to 027: Stannah stairlift batteries, two Pride scooters, two generic scooter battery sets). 27 records. A third status, "Not maker-verified", added for rows that rest on an insurer or dealer.
• 10 November 2026, version 1.0.0: first edition, 21 records. CSV as first published. Next check due 10 February 2027.

Download and cite

Download the data (CSV) Download the data (JSON)

Cite as: Look Into, "Replacement Parts Database", version 1.1.0, 10 November 2026, https://lookinto.co.uk/home-and-garden/replacement-parts-database/ (dataset LI-DS-0002). Free to quote with attribution and a link. Keep the date with the figure.

Questions people ask

Do BRITA MAXTRA PRO cartridges fit older BRITA jugs?

BRITA's product copy says MAXTRA PRO cartridges fit all BRITA jugs and the BRITA Flow tank. Argos's BRITA brand page, read on 10 November 2026, adds one exception, the Classic range. If you own a Classic jug, check with BRITA before buying a multipack.

Do Oral-B iO heads fit other Oral-B toothbrushes?

No. Oral-B UK says iO handles take only iO heads, and its everyday heads fit Vitality, Pro, Smart and Genius handles. The two ranges do not swap.

How often should a dehumidifier HEPA filter be changed?

Meaco says the H13 HEPA filter in its Arete dehumidifiers needs replacing roughly every three months. At Meaco's own price of £39.99 for three on 10 November 2026, that is £53.32 a year for the 18L, 20L and 25L models.

What batteries does a Stannah stairlift use, and how long do they last?

Stannah says its stairlifts use two rechargeable 12V 7.4Ah sealed lead-acid (VRLA) batteries wired in series, or two 12V 12Ah on the 260 on stairs of 12 metres or longer and on heavy duty models. It says they generally last around 3 to 5 years and should be fitted by a technician. Read at Stannah UK on 10 November 2026.

How much do replacement mobility scooter batteries cost a year?

A pair of 12V 12Ah batteries for a small 24V scooter was £54.98 on 15 October 2026. Replaced every four years that is about £14 a year, and every 12 months it is £54.98. The life figures come from an insurer and a dealer, not a scooter maker.

How much does an air purifier filter cost a year?

On each maker's own interval and the prices we read, from £34.86 a year for the Philips 600 Series (one filter, a minimum) to between £43.98 and £65.97 for the Levoit Core Mini, whose manual says every four to six months.

Sources

• BRITA UK, MAXTRA PRO cartridges, read 10 November 2026
• Sainsbury's listing, MAXTRA PRO, read 10 November 2026
• Argos, BRITA brand page, read 10 November 2026
• Tesco listing, Evolve+ 3 pack (150 litres), read 10 November 2026
• Morrisons listing, Evolve+ (100 litres), read 10 November 2026
• Meaco, Arete 18L, 20L and 25L HEPA filter, read 10 November 2026
• Meaco, Arete One 6L HEPA filter, read 10 November 2026
• Look Into, Levoit Core Mini vs Philips 600 Series, read 8 November 2026
• Look Into, Best air purifiers UK, read 10 September 2026
• Oral-B UK, replacement brush heads, read 10 November 2026
• Look Into, Best electric toothbrush heads UK, read 10 November 2026
• Philips UK support, which brush head fits my Sonicare, read 10 November 2026
• Canon UK store, TS3750i cartridges, read 15 September 2026
• Look Into, Best printers UK, read 15 September 2026
• Canon UK store, TS7750i cartridges, read 15 September 2026
• HP UK store, HP 142A toner, read 15 September 2026
• Brother UK store, HL-L2400DW, read 15 September 2026
• Epson UK, 104 EcoTank ink, read 15 September 2026
• Epson UK, 102 EcoTank ink, read 15 September 2026
• Stannah, stairlift batteries, read 10 November 2026
• Pride Mobility UK, GoGo Elite Traveller 2.0, read 10 November 2026
• Pride Mobility UK, GoGo Elite Traveller Sport, read 10 November 2026
• Look Into, What a mobility scooter really costs to own, read 15 October 2026

Related research

• Product Ownership Cost Index: what 34 products cost over one, three and five years.
• The Subscription Tax Index: what plans add to doorbells, alarms and robot vacuums.
• Repair or replace calculator.
• What a mobility scooter really costs to own: five-year totals with batteries, insurance and servicing.
• Stairlift servicing and maintenance costs.
• Claims Checked: listings read against the maker's own page.