Precision Zone Control
Individual temperature control for every space — personalised comfort throughout your building.
30% More Efficient
Water transfers thermal energy 4x better than refrigerant — dramatically lower operating costs.
PFAS-Free Future
Minimal refrigerant confined to outdoor units — aligns with Karnot's natural refrigerant philosophy.
Complete Product Range
From concealed ceiling cassettes to freestanding towers — find the perfect hydronic solution for any application.
Cassette Fan Coil Units
Ceiling-integrated with 4-way air distribution — the professional's choice for commercial and upscale residential.
- Air Flow: 340–2,380 m³/h
- Capacity: 1.8–12.6 kW cooling
- Installation: Flush ceiling mount
- Applications: Offices, hotels, retail, luxury homes
4-Pipe Cassette Units
Simultaneous heating and cooling — perfect for buildings with diverse thermal loads in different zones.
- Air Flow: 340–2,380 m³/h
- Dual Coils: Independent heating & cooling
- Applications: Mixed-use, hospitals, hotels
- Benefit: No seasonal changeover required
Split Fan Coil Units
Wall-mounted with hydronic efficiency — familiar aesthetics with superior performance over split ACs.
- Air Flow: 510–1,020 m³/h
- Capacity: 2.8–5.6 kW cooling
- Installation: High-wall mount
- Applications: Apartments, condos, small offices
Horizontal Concealed Units
Fully ducted ceiling units — completely invisible with customisable air distribution to multiple zones.
- Air Flow: 340–2,380 m³/h
- Capacity: 2.2–14.0 kW cooling
- Static Pressure: Up to 50 Pa
- Applications: Offices, restaurants, retail
Horizontal Exposed Units
High-wall or exposed ceiling mount — concealed unit benefits with easier installation and maintenance.
- Air Flow: 340–2,380 m³/h
- Capacity: 1.8–12.6 kW cooling
- Installation: Exposed or semi-concealed
- Applications: Industrial, warehouses, workshops
Vertical Exposed Units
Freestanding tower design — ideal for retrofit, warehouses, and industrial. Standard and high-capacity models.
- Air Flow: 340–2,380 m³/h (std) | 880–2,000 m³/h (HC)
- Capacity: Up to 10 kW cooling / 15 kW heating
- Footprint: Compact 270–600 mm wide
- Applications: Retrofit, industrial, agriculture
Ultra Thin Units
Exceptionally slim at only 130 mm wide — perfect for space-constrained applications.
- Air Flow: 80–600 m³/h
- Capacity: 1.0–4.0 kW cool / 1.5–6.0 kW heat
- Depth: Only 130 mm (5.1 inches)
- Applications: Apartments, boutique hotels, tight retrofits
Complete System Integration
iZONE fan coils are designed to work seamlessly with iHEAT heat pumps, creating a complete, efficient, and future-proof hydronic HVAC solution.
Pair with iHEAT Heat Pumps
- R290 natural refrigerant technology
- Optimal performance at 30–50 °C water
- COP ratings up to 4.5 in heating mode
- Seamless BMS integration
- Single-source warranty and support
Hydronic System Benefits
- Centralised heat pump with distributed fan coils
- 95% reduction in building refrigerant
- Easy solar thermal integration
- Compatible with existing boiler/chiller
- Future-ready for renewables
Advanced Control Options
- Wireless remote control standard
- Wired wall controllers available
- RS485 ModBus network capability
- Room and coil temperature sensors
- Weekly programmable timers
- BMS integration ready
Installation & Support
- BOI-SIPP registered manufacturer
- CE certified for international markets
- Comprehensive technical documentation
- Philippines-based engineering support
- Quick delivery across ASEAN
Why Choose Hydronic?
See how iZONE outperforms traditional climate control technologies.
| Feature | iZONE Hydronic | VRF / Split AC | Radiators |
|---|---|---|---|
| Heating & Cooling | Both from one unit | Both (separate units) | Heating only |
| Energy Efficiency | 30% better than split | Good (COP 3-4) | Medium |
| Refrigerant in Building | Minimal (outdoor only) | High (pipes throughout) | None (water) |
| Response Time | Fast (3x radiator) | Fast | Slow |
| Zone Control | Individual room | Individual room | Limited |
| Operating Cost | Lowest | Medium | High |
| Maintenance | Low (sealed system) | Medium (refrigerant) | Low |
| Flexibility | 7 configurations | Good | Limited |
Future: iSAVE Smart Home Integration
Coming Q4 2026: Transform your iZONE system into a fully integrated smart home ecosystem with voice control, automation, and energy optimisation.
Smart Home Compatibility
- Matter protocol certified — universal
- Apple Home, Google Home, Alexa, SmartThings
- Thread mesh networking for reliable wireless
- Voice control for every zone
- Single controller for all fan coils
Energy Intelligence
- Real-time energy monitoring per zone
- AI-powered occupancy-based scheduling
- Solar integration — prioritise solar power
- Off-peak load shifting
- Blockchain-verified carbon credits
Predictive Maintenance
- 24/7 system health monitoring
- Early warning alerts before failures
- Automatic service ticket generation
- Performance trending and tracking
- 60% reduction in unplanned downtime
Revenue Generation
- Virtual Power Plant (VPP) participation
- Demand response payments
- Carbon credit monetisation (8-15% return)
- Energy cost reduction: 15-25%
- Total value: 30-45% beyond baseline
The Complete Karnot Ecosystem
iHEAT heat pumps + iZONE fan coils + iSAVE smart controller = The first PFAS-free hydronic HVAC system with native Matter integration, energy optimisation, and carbon credit generation.
Learn More About iSAVE