Full side-by-side

AOX Premium Mfr claim · Coral Premium 9 Mfr claim
SpecAOX PremiumCoral Premium 9Winner
OriginSingaporeSingapore
DistributionDirect retail · e-store + corporate rentalDirect retail
CategoryAntioxidant water dispenserHydrogen water + multi-stage filter
Plates79Coral Premium 9
pH (max alkaline)10.28.3AOX Premium
ORP-620 mV-120 mVAOX Premium
Dissolved H₂0.95 ppm0.1 ppmAOX Premium
Flow rate2.4 L/min2.2 L/minAOX Premium
Warranty2 yr2 yrTie
Filter cost (each)S$ 180S$ 160Coral Premium 9
Sticker priceS$ 1,799S$ 2,968AOX Premium
5-year totalS$ 3,599S$ 4,568AOX Premium
Our rating
How we sourced these numbers: All specs are taken directly from each manufacturer's published product page (links at the bottom). We have NOT independently lab-tested these brands — only Prime Water (our own sister brand) is verifiable through primewater.com.sg. Independent lab testing is rolling out through 2026.

Verdict

Cost over 5 years: AOX Premium saves S$ 969 over 5 years.

Lab performance: AOX Premium produces 0.95 ppm dissolved H₂; Coral Premium 9 produces 0.1 ppm. The AOX Premium leads on hydrogen output.

Warranty: AOX Premium carries a 2-year warranty; Coral Premium 9 carries 2. Same warranty length.

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 →

Coral Premium 9

Direct retail

Showroom: Block 37 Defu Lane 10 #03-41, Singapore 539214

Phone: +65 6239 5335 · Sales +65 8761 6868

Lineup: Premium 9 Slim ($3,413) · 9 H Plus ($4,949) · 9 Compact ($3,168) · 9 H ($2,968) · 7 ($1,968) · 5 ($1,688) · 4 ($949)

Visit Coral Pure Natural Pte Ltd →

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