Thero 90

Thero 90

Space is a luxury in modern Perth kitchens. The BWT Thero 90 was designed to solve the “crowded cupboard” problem without sacrificing water quality. This sleek, aluminium-housed system is one of the most compact Reverse Osmosis units on the planet. It operates silently to strip away 98% of dissolved solids, delivering crisp, refreshing water directly to your glass at the touch of a button. It’s the perfect blend of European minimalism and world-class filtration.

Industry Leading BWT Technology

Our  whole home system utilises sub-micron filtration to strip away 99.9% of contaminants before they ever reach your tap

Cartridgeless System

The Premium Purezone was selected by Osmosis Water Filters because it thrives in WA conditions.

Ultra-Compact Footprint

Designed for minimalists. The Thero 90 takes up significantly less space than a standard RO system, leaving plenty of room in your cupboard for bins and storage.

Whisper-Quiet Operation

Housed in a vibration-dampening aluminium casing, the Thero 90 is engineered to be seen, not heard. It’s the quietest tankless RO system in its class.

Smart Hygiene Monitoring

Safety is automated. The system performs a self-flush every 3 hours and after every use, ensuring that the water you drink is never stagnant and always fresh.

Easy-Click Maintenance

No tools, no mess. The “Easy-Click” cartridge system allows for a 30-second filter change once a year, making it the most user-friendly system for busy Perth households.

How it Works

Stage 1: The Carbon Pre-Filter

Water enters the Thero 90 and passes through a high-performance carbon stage to neutralise chlorine and protect the delicate RO membrane from chemical damage.

Stage 2: Precision Osmosis

The water is forced through the Thero 90’s high-flow membrane, removing fluoride, heavy metals, and micro-contaminants. Because it is a tankless system, the water is purified the moment you turn the tap, not sitting in a storage tank for days.

Technical Specifications: BWT Thero 90
Model Thero 90 (Tankless Direct Flow)
Flow Rate ~1.5 Litres Per Minute
Salt Rejection > 98% Rejection Rate
Casing Material Vibration-Dampening Aluminium
Protection Class IP 54 (Splashed Water Resistant)
Dimensions 120mm (W) x 415mm (H) x 400mm (D)
Hygiene Control Automated Interval Flushing

Whats Included

  • BWT Thero 90 Main Engine – Featuring a sleek aluminium exterior.

  • Designer Drinking Tap – High-quality faucet in Chrome, Matte Black, or Brushed Nickel.

  • Precision Under-Sink Fitment – Installed by our licensed Osmosis plumbing team.

  • Power & Waste Integration – Safe, compliant electrical and drainage connections.

  • Post-Install Water Purity Test – Digital TDS reading to verify your system’s performance.