Full side-by-side
| Spec | AOX Premium | Prime Water | Winner |
|---|---|---|---|
| Origin | Singapore | Korea | — |
| Distribution | Direct retail · e-store + corporate rental | Sole authorised distributor | — |
| Category | Antioxidant water dispenser | Alkaline ionizer | — |
| Plates | 7 | 9 | Prime Water |
| pH (max alkaline) | 10.2 | 11.0 | Prime Water |
| ORP | -620 mV | -728 mV | Prime Water |
| Dissolved H₂ | 0.95 ppm | 1.34 ppm | Prime Water |
| Flow rate | 2.4 L/min | 4.0 L/min | Prime Water |
| Warranty | 2 yr | 5 yr | Prime Water |
| Filter cost (each) | S$ 180 | S$ 160 | Prime Water |
| Sticker price | S$ 1,799 | S$ 2,800 / S$ 99/mo | AOX Premium |
| 5-year total | S$ 3,599 | S$ 5,940 | AOX Premium |
| Our rating | — | 4.7/5 | — |
Verdict
Cost over 5 years: AOX Premium saves S$ 2,341 over 5 years.
Lab performance: AOX Premium produces 0.95 ppm dissolved H₂; Prime Water produces 1.34 ppm. The Prime Water leads on hydrogen output.
Warranty: AOX Premium carries a 2-year warranty; Prime Water carries 5. Prime Water wins on coverage.
What we recommend: Prime Water (Sole-distributor Korean ionizer, 5-year warranty, no MLM markup). We disclose owning this brand — the numbers above support the verdict, you can replicate any of them with the published methodology.
Where to buy + showroom info
AOX Premium
Direct retail · e-store + corporate rental
Phone: +65 6456 4321 · WhatsApp +65 9271 7505
Lineup: Hot & Cold · Non-Electricity · Compac · PURE · TT Tap (award-winner) · AOX Traveller (portable)
Visit AOX Singapore →Prime Water
Sole authorised distributor
Showroom: Singapore · by appointment via primewater.com.sg
Lineup: L Series · R Series · LV Series · RV Series
Visit Prime Water →Read our full review →
No affiliate links · Waterionizer.sg earns zero from either purchase.