Filter Replacements · ₹1,400 – ₹3,500 per set
AO Smith X2 UV Filter Replacement: Every Stage Explained (2026)
By Bikram Nath · Updated 2026-04-23 · How we pick · Affiliate disclosure: links earn a small commission
Quick Answer
Our top pick is AO Smith Genuine MIN-TECH Cartridge for X2 UV — Best OEM — and the safest choice given the proprietary cartridge format.
Buying the cartridges, not doing the replacement?
This guide lists which cartridges to buy. The step-by-step replacement procedure is on a separate page — How to Replace RO Water Purifier Filters — 6 steps, ~60 minutes, no plumber needed.
The AO Smith X2 UV is a non-RO UV+UF purifier aimed at municipal-supply households with TDS below 500. It has a 5-stage treatment: sediment, pre-carbon, carbon block, UV, and UF. Because there's no RO membrane, consumables are fewer but AO Smith uses a proprietary cartridge format that limits aftermarket compatibility. Replaceables: MIN-TECH cartridge pack (sediment + carbon, ~12 months / 6000 L), UV lamp (~12 months), UF (~24 months). AO Smith genuine full cycle ₹2,400–₹3,500 through authorised dealers. Compatibles are limited to a handful of brands because of the proprietary cartridge snap-fit. DIY with compatibles ₹1,400–₹2,200 — but you need to verify fit carefully. Honest red flag: the X2 UV is not suited for borewell input. If your input TDS is above 500, you've bought the wrong unit — no cartridge change fixes that. Check TDS at the tap before ordering anything.
How we picked these filter replacements
Every pick on this page started from real shopper questions, not Amazon's bestseller rankings. We exclude listings where reviews look incentivised — the patterns we screen for are sudden review spikes timed with coupon launches, brand-comparison templates copy-pasted across multiple variants, and listings under a year old with fewer than 50 organic reviews. Bestseller-tag products in narrow subcategories often game a small basket; we prefer products with deep, stable review history that survived seasonal surges.
Pricing on this page reflects realistic Amazon India retail. We ignore one-day flash deals, Prime-Day-only discounts, and stabilised retailer-only coupons that don't hold for someone shopping on a normal Tuesday. The ₹1,400 – ₹3,500 per setband is what you'll actually pay if you walk into this listing today, not the cherry-picked best-discount value.
Our editorial process is one person — Bikram, based in Pune — researching water purifiers products against Indian use-case constraints (voltage variability, hard water in many cities, monsoon humidity, smaller flat sizes than Western default). The order of products on this page reflects our editorial ranking only. We do not accept paid placements, sponsored slots, or PR-pitched products. Our only commercial relationship is the Amazon affiliate link — clicking through earns a small commission, your price stays identical.
Buying filter replacements in India — what to know
- Indian retail vs imported products: Most filter replacements listed here have official Indian distributor warranty. Imported (grey market / parallel import) units are sometimes cheaper but carry no Indian service-centre warranty — for water purifiers, that gap is meaningful since service infrastructure varies sharply between metros and tier-2 cities.
- Voltage and electrical compatibility: Indian mains is 230V at 50Hz with notable fluctuation outside metros. Most filter replacements in this category aren't voltage-sensitive, but verify the product page mentions Indian voltage compatibility before importing or buying grey-market units.
- Delivery realities: Amazon India Prime delivery in metros lands in 1-2 days; tier-2 cities 3-5 days; remote pincodes 5-7. For festive periods (Diwali week, Raksha Bandhan, year-end), even Prime delivery slips by 1-2 days due to demand surges. Build that buffer into your purchase timing if the filter replacements is for a specific date.
- Return window math: Standard Amazon India return window is 7-10 days from delivery, not from purchase or unboxing. For gifts and items received before the actual occasion, the return clock starts on delivery — order closer to your need-by date so the return option remains live if the product disappoints.
- Warranty registration: Most water purifiersbrands require online warranty registration within 7-15 days of delivery. Skipping this step often means the warranty period defaults to the manufacturing date (which can be months earlier) instead of your delivery date. Register on the brand's website with your invoice number — takes 2 minutes, saves a potential 1-3 month warranty gap.
- Stabiliser / surge protection: India's grid sees more voltage events than most product engineering tolerances assume. For filter replacements with electronic components, the 7002–14004 additional spend on a quality stabiliser pays for itself the first time it saves you from a power-surge replacement.
Quick Comparison
| # | Product | Brand | Link |
|---|---|---|---|
| 1 | AO Smith Genuine MIN-TECH Cartridge for X2 UV OEM Choice | AO Smith | Check on Amazon → |
| 2 | AO Smith Genuine UV Lamp for X2 UV Most Trusted | AO Smith | Check on Amazon → |
| 3 | Aquadart Compatible Cartridge for AO Smith X2 UV Best Value | Aquadart | Check on Amazon → |
| 4 | AO Smith Genuine UF Cartridge for X2 UV | AO Smith | Check on Amazon → |
| 5 | Konvio Neer Compatible All-in-One for AO Smith X2 UV | Konvio Neer | Check on Amazon → |
Our Top Picks
AO Smith Genuine MIN-TECH Cartridge for X2 UV
AO Smith
Cartridges included
1 (MIN-TECH all-in-one cartridge)
Service life
~6000 L / 12 months
Compatibility
AO Smith X2 UV
OEM
Yes
Pros
- ✓AO Smith-genuine, correct MIN-TECH snap-fit
- ✓Consistent carbon grade
- ✓Preserves warranty
- ✓Bundles sediment + carbon in one cartridge
Cons
- ✗UV lamp, UF sold separately
- ✗Premium over the few compatible options
- ✗Proprietary format — only AO Smith fit
“Best OEM — and the safest choice given the proprietary cartridge format.”
Check Latest Price on Amazon →AO Smith Genuine UV Lamp for X2 UV
AO Smith
Cartridges included
1 (UV lamp 11W)
Service life
~6,000 hours / 12 months
Compatibility
AO Smith X2 UV
OEM
Yes
Pros
- ✓Correct 254 nm spectrum for microbial kill
- ✓Matches X2 UV chamber wattage exactly
- ✓12-month replacement warranty
- ✓Drop-in install
Cons
- ✗Premium over generic lamps (limited compatibles anyway)
- ✗Quartz sleeve sold separately
- ✗Run on stabiliser for full rated life
“UV is safety-critical — OEM only. Not the stage to economise.”
Check Latest Price on Amazon →Aquadart Compatible Cartridge for AO Smith X2 UV
Aquadart
Cartridges included
1 (Compatible all-in-one)
Service life
12 months
Compatibility
AO Smith X2 UV (verify sub-variant before order)
OEM
No (Compatible)
Pros
- ✓One of the few compatibles for the proprietary format
- ✓Roughly 45% cheaper than OEM
- ✓Adequate for clean municipal water
- ✓Wider seller inventory than Konvio on this fit
Cons
- ✗Snap-fit tolerance varies — some listings don't click cleanly
- ✗Voids AMC
- ✗Carbon grade below OEM
“Cheapest compatible cartridge. Check return policy before buying — fit-check on arrival is essential.”
Check Latest Price on Amazon →AO Smith Genuine UF Cartridge for X2 UV
AO Smith
Cartridges included
1 (UF cartridge)
Service life
~24 months
Compatibility
AO Smith X2 UV
OEM
Yes
Pros
- ✓Genuine UF hollow-fibre for final microbial polish
- ✓Proprietary fit — no compatible alternative recommended
- ✓2-year service life fits annual refresh cycles
- ✓AO Smith 12-month replacement warranty
Cons
- ✗Often skipped by DIYers — buried stage
- ✗Higher cost per month than main cartridge
- ✗No generic alternatives
“Essential long-life stage. Don't skip at 24-month mark.”
Check Latest Price on Amazon →Konvio Neer Compatible All-in-One for AO Smith X2 UV
Konvio Neer
Cartridges included
1 (Compatible all-in-one)
Service life
12 months
Compatibility
AO Smith X2 UV
OEM
No (Compatible)
Pros
- ✓Cheapest compatible for X2 UV
- ✓Available across India
- ✓Adequate on clean municipal TDS < 400
- ✓Easy reorder
Cons
- ✗Snap-fit can be loose — some batch reports of leaks
- ✗Carbon grade lower than OEM
- ✗Voids AMC
“Cheapest option but verify fit on arrival. Use only on low-TDS municipal supply.”
Check Latest Price on Amazon →What to Look For
- 1.Verify the variant. AO Smith sells X2 UV, X2 UV+, X7, Z2, Z7 — cartridge formats differ substantially. X2 UV specifically uses the MIN-TECH snap-in format. Order only X2-UV-specific parts; cross-buying from other AO Smith models won't fit.
- 2.Genuine vs compatible — narrower choice than other brands. AO Smith's proprietary cartridge format means only 2–3 compatible brands exist (Aquadart, Konvio Neer) and their fit quality varies. If the unit is under warranty, stick with AO Smith genuine. Out of warranty, compatibles work but expect more install friction.
- 3.Installation. X2 UV is a top-access unit — lift the top cover (two release tabs at the rear). The MIN-TECH cartridge snaps vertically in/out; no threaded housing, which is a blessing and a curse. Unplug and drain tank before touching anything. The UV chamber is behind the cartridge column, accessed from the side panel.
- 4.Warranty. AO Smith offers 1-year comprehensive + 3-year warranty on the storage tank. Optional AMC ₹3,000–₹4,500/year. DIY cartridge swap with genuine parts doesn't void warranty; compatibles do void parts warranty. Tank warranty is unaffected by cartridge choice.
- 5.Check input TDS before buying any cartridge. If your tap TDS is above 500, the X2 UV's non-RO design cannot handle your water and no cartridge change fixes it. This is a use-case mismatch, not a part failure. Switch to a Z-series RO-based AO Smith or a different brand's RO unit.
- 6.When to stop DIY. If the MIN-TECH cartridge doesn't click cleanly into place, it's the wrong variant — do not force it. Electronics damage from forcing cartridges is the most common DIY failure on X2 UV. If the UV indicator stays red after lamp swap, the lamp may be correctly replaced but the counter needs service-visit reset.
Frequently Asked Questions
What is the best Filter Replacements in India?
The best Filter Replacements in India is the AO Smith Genuine MIN-TECH Cartridge for X2 UV. Best OEM — and the safest choice given the proprietary cartridge format.
How much does a Filter Replacements cost in India?
Filter Replacements prices in India typically range from ₹1,400 – ₹3,500 per set. Check current prices on Amazon for each pick listed above.
What should I look for when buying a Filter Replacements?
Key factors: Verify the variant. AO Smith sells X2 UV, X2 UV+, X7, Z2, Z7 — cartridge formats differ substantially. X2 UV specifically uses the MIN-TECH snap-in format. Order only X2-UV-specific parts; cross-buying from other AO Smith models won't fit. | Genuine vs compatible — narrower choice than other brands. AO Smith's proprietary cartridge format means only 2–3 compatible brands exist (Aquadart, Konvio Neer) and their fit quality varies. If the unit is under warranty, stick with AO Smith genuine. Out of warranty, compatibles work but expect more install friction. | Installation. X2 UV is a top-access unit — lift the top cover (two release tabs at the rear). The MIN-TECH cartridge snaps vertically in/out; no threaded housing, which is a blessing and a curse. Unplug and drain tank before touching anything. The UV chamber is behind the cartridge column, accessed from the side panel.
What is a good budget option for Filter Replacements?
Konvio Neer Compatible All-in-One for AO Smith X2 UV is a solid budget choice within this range. Cheapest option but verify fit on arrival. Use only on low-TDS municipal supply.
How long does Amazon India take to deliver filter replacements?
Amazon Prime members in metros (Mumbai, Delhi, Bangalore, Pune, Chennai, Hyderabad, Kolkata, Ahmedabad) typically get 1-2 day delivery. Tier-2 cities take 3-5 days. Remote pincodes (parts of North-East, interior Himachal, smaller towns in MP and Odisha) take 5-7 days. For filter replacements, we recommend verifying delivery date on the Amazon listing before checkout — bulkier water purifiers items occasionally take longer than the displayed Prime estimate.
Is the Filter Replacements listed here available with EMI on Amazon India?
Most products in the ₹1,400 – ₹3,500 per set range qualify for No-Cost EMI on Amazon India when you check out with a credit card from HDFC, ICICI, Axis, SBI, or Kotak Mahindra. Some debit cards from these banks also work. The exact EMI options appear on the product page after you select a payment method — typically 3, 6, 9 month no-cost terms for ₹1,400 – ₹3,500 per set, with longer 12-24 month terms available at small interest. Amazon Pay Later is also an option for orders under ₹60,000.
Can I return Filter Replacements on Amazon if it doesn't work as expected?
Most water purifiers products on Amazon.in have a 7-10 day return window from delivery date for replacement or refund, provided the item is unused and in original packaging with all accessories. Personal-care and consumable items are typically non-returnable once the seal is broken. For appliances and electronics, the manufacturer warranty (usually 1-2 years) covers defects beyond Amazon's return window — register the product with the brand within 7 days of delivery to lock in the warranty start date.
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