Water Purifiers
Filter Replacements
Filter Replacements
AO Smith Z7 Filter Replacement Guide (2026)
By Bikram Nath · Updated 2026-10-02 · How we pick · Affiliate disclosure: links earn a small commission
Where do I buy an AO Smith Z7 filter replacement in India?
Our top pick is the Aquadyne compatible service kit, the one listing here that names the Z7 as compatible (and the Z8, Z9, X7, X8 and X9): it includes sediment, sediment-carbon, antiscalant, UF and mineral cartridges plus an RO membrane, pipe and fittings. The Konvio Neer mineraliser and the Vontron 75 GPD membrane are generic parts that don't name the Z7, so compare sizes with your existing cartridges first.
India’s BIS drinking-water standard, IS 10500, sets the acceptable limit for total dissolved solids (TDS) at 500 mg/L — relaxed to 2000 mg/L only where no better source exists — with an acceptable pH range of 6.5–8.5; a purifier’s job is to bring your source water within these limits. BIS IS 10500:2012 (opens in new tab)
The Aquadyne kit is not made or endorsed by AO Smith — its listing says so. For genuine AO Smith parts, go through AO Smith's own service channel.
Aquadyne Compatible RO Filter Service Kit for AO Smith Z7, Z8, Z9, X7, X8, X9
Our top pick: a complete compatible kit listed for the Z7, with video-guided fitting.
Affiliate links — we may earn a commission. Your price stays identical.
Quick Comparison
| # | Product | Best for | Brand | Price | Link |
|---|---|---|---|---|---|
| 1 | Aquadyne Compatible RO Filter Service Kit for AO Smith Z7, Z8, Z9, X7, X8, X9 | Top Pick | Aquadyne | Check price on Amazon | |
| 2 | Konvio Neer RO Mineraliser Cartridge with pH Tester Kit | — | KONVIO NEER | Check price on Amazon | |
| 3 | Vontron 75 GPD RO Membrane | — | Vontron | Check price on Amazon |
Our Top Picks
Fit
AO Smith Z7, Z8, Z9, X7, X8, X9 (listing)
Cartridges
Sediment, sediment-carbon 2-in-1 and UF membrane (listed as DS 8.5), antiscalant, mineral filter (4-inch), silver spun pre-filter
Membrane
Trident RO membrane
Fittings
14 elbows, 2 m pipe, flow restrictor, clamp
Support
Tele and video fitment support
Warranty
Manufacturing defects only
Pros
- ✓The only pick here listed for the AO Smith Z7
- ✓Complete replacement set, including an RO membrane, pipe and fittings
- ✓Tele and video support for self-service, per the listing
Cons
- ✗Compatible kit — not made or endorsed by AO Smith, per the listing
- ✗Warranty covers manufacturing defects only, not cartridge depletion
“Our top pick: a complete compatible kit listed for the Z7, with video-guided fitting.”
Check price on Amazon
Type
Mineraliser cartridge
Minerals
Adds zinc and copper; alkaline pH
Included
pH tester kit
Compatibility
All RO water purifiers (per the brand)
Model
H2AAA9X2
Pros
- ✓pH tester kit included to check acidity or alkalinity
- ✓Adds zinc and copper and helps keep an alkaline pH, per the brand
- ✓Sold as compatible with all RO purifiers
Cons
- ✗Doesn't name the AO Smith Z7 — check its size and fittings against your existing mineral cartridge
- ✗No warranty or cartridge life stated
“An add-on mineraliser with a pH tester, if it fits your Z7's layout.”
Check price on Amazon
Capacity
75 GPD
Rated output
6,000 litres (listing)
Contents
1 membrane
Use
RO water purifiers
Pros
- ✓Branded Vontron 75 GPD membrane
- ✓Rated for 6,000 litres, per the listing
- ✓Made for do-it-yourself membrane changes, per the listing
Cons
- ✗Not listed for a specific purifier — confirm your Z7's membrane size before ordering
- ✗Warranty terms are unclear on the listing
“A standalone 75 GPD membrane if only your RO membrane needs replacing.”
Check price on Amazon
Prices shown are pulled live from Amazon.in and refresh through the day. Amazon prices and availability change frequently — the price on the Amazon product page at the time of purchase is the one that applies. As an Amazon Associate, PakkaPick earns from qualifying purchases; your price is unaffected.
Editor's read
The Aquadyne kit is the only pick here that names the Z7. The Konvio Neer mineraliser and Vontron membrane are generic parts that may need different fittings or space, so match them to the cartridges you are replacing. None of these listings gives a replacement interval for the Z7 — follow your purifier's manual or AO Smith's service schedule.
— Bikram, editor
Editor's take
For a Z7, start with the Aquadyne kit — the only pick here listed for the Z7, with the full set of replacement cartridges in one box. Add the Konvio Neer mineraliser only if you want its pH tester, and check the fit before buying any generic part.
Further reading
How we picked these filter replacements
Every pick on this page is matched to its exact Amazon India listing, and the specifications, warranty terms and features on each card come from that listing; a brand's own claims are attributed to the brand. We don't physically test the products in our guides, and we don't link to Amazon search results. Prices shown come from Amazon's data with the time they were fetched; the price at checkout can differ.
Our editorial process is one person — Bikram, based in Pune. The order of products on this page reflects our editorial ranking only. No brand paid for a place in this ranking. Each ranked pick earns us money only through its Amazon affiliate link — clicking through earns a small commission, your price stays identical.
Standards & sources
- BIS IS 10500 — Drinking Water Specification (opens in new tab) — India's drinking-water quality limits are defined by BIS standard IS 10500 — a purifier's job is to bring your source water within these limits.
- Bureau of Indian Standards (BIS) — product registration (opens in new tab) — Many electronic goods sold in India require BIS registration for safety; you can look up a product's BIS registration on the BIS portal.
Buying filter replacements in India — what to check
- Warranty:check that the listing states an Indian warranty and what it covers. Imported (grey-market) units may not be serviced by the brand's Indian service centres.
- Delivery and returns: Amazon shows the delivery date for your pincode and the return policy on each product page. Check both before ordering, especially if it is a gift or needed by a date.
- Keep the invoice: some brands ask you to register the product after purchase. Keep the Amazon invoice and read the warranty card that comes in the box.
What to Look For
- 1.Confirm your model. The Aquadyne kit lists the AO Smith Z7, Z8, Z9, X7, X8 and X9; check the model name on your purifier before ordering.
- 2.Compatible vs genuine. The Aquadyne kit is a compatible kit made in India by Aquadyne; its listing states it is neither manufactured nor endorsed by AO Smith.
- 3.Check cartridge sizes. The Aquadyne listing gives its sediment, sediment-carbon and UF cartridges as "DS 8.5" (no unit stated) and its mineral filter as 4-inch. The Konvio Neer mineraliser doesn't state a size, so compare it against the cartridge you are replacing.
- 4.What the Aquadyne kit includes: sediment, sediment-carbon 2-in-1, antiscalant, RO membrane, UF membrane, mineral filter and a silver spun outer pre-filter, plus 14 elbows, 2 m of pipe, a flow restrictor and a clamp, per the listing.
- 5.Installation support: Aquadyne offers tele and video support for self-service, per the listing. Switch off and unplug the purifier before changing cartridges.
- 6.Mineraliser check: the Konvio Neer cartridge comes with a pH tester kit, so you can check the water's acidity or alkalinity after fitting it.
Frequently Asked Questions
Are compatible AO Smith Z7 filters made by AO Smith?
No. The Aquadyne kit's listing states it is neither manufactured nor endorsed by AO Smith, and uses the AO Smith name only to identify the models it fits. For genuine parts, go through AO Smith's own service channel.
What does a complete AO Smith Z7 filter kit include?
The Aquadyne kit for the Z7 lists a sediment cartridge, a sediment-carbon 2-in-1, an antiscalant cartridge, a Trident RO membrane, a UF membrane, a 4-inch mineral filter and a silver spun outer pre-filter, plus 14 elbows, 2 m of pipe, a flow restrictor and a clamp.
What warranty do these replacement parts carry?
The Aquadyne kit's warranty covers manufacturing defects only, not normal depletion of the cartridges. The Vontron membrane and Konvio Neer mineraliser listings don't give clear warranty terms.
How many litres does a 75 GPD RO membrane handle before replacement?
The Vontron 75 GPD membrane listing states a capacity of 6,000 litres; actual life depends on your input water. The Aquadyne kit's Trident membrane has no capacity figure in its listing.
How long does Amazon India take to deliver filter replacements?
Delivery time depends on your pincode and the seller. Amazon shows the delivery date for your pincode on each product page before checkout, so check it there for the pick you choose.
Are these filter replacements available with No-Cost EMI on Amazon India?
EMI and No-Cost EMI options depend on the product, the seller and your card. Amazon lists the options available for your payment method on the product page and at checkout.
Can I return filter replacements on Amazon if they don't work as expected?
Return and replacement terms are set per product and seller on Amazon.in. Check the return policy shown on the product page before you order, and keep the invoice for any warranty claim.
Related Water Purifiers Guides
Gravity Water Purifiers
Best Gravity Water Purifier in India 2026 — Gravity Filters Compared
Filter Replacements
AO Smith X2 UV Filter Replacement: 2 Picks Compared
Filter Replacements
Kent Superb Filter Replacement: 4 Picks Compared
Filter Replacements
LG Puricare Filter Replacement: The Honest Guide (2026)
Filter Replacements
Livpure Pep Pro Filter Replacement: 2 Picks Compared
Top Pick
Aquadyne Compatible RO Filter Service Kit for AO Smith Z7, Z8, Z9, X7, X8, X9