ZEFIROHydronic fan coil unit
Quiet, efficient and available in multiple configurations.
The most flexible range by Aertesi, designed to adapt to any installation with high performance and smart comfort management. Modulating power, reduced energy consumption and consistent quietness throughout all seasons.
Absolute versatility
Available in many variants: with casing, without casing, horizontal and vertical versions, low-profile (LOW Zefiro) and recessed models.
One of Aertesi’s most complete ranges.
Simplified installation
Interlocking side panels ensure quick and precise assembly, making installation easier on site.
Quiet operation
EC brushless motors with continuous 0–10 VDC control: reduced sound emissions and comfortable operation.
IAQ – Integrated air purification and sanitization
Possible integration with:
- SANI FAN (internal surface sanitization)
- BIOXAIR (air duct sanitization)
- FILTRASAN (antimicrobial filtering media)
Wide range of accessories
Counter frames, panels, plenums, supervision accessories, and horizontal reversibility kits (HDP).
Energy efficiency
Up to 67% lower power consumption compared to traditional AC motors.
Zefiro provides immediate well-being throughout the year, intelligently regulating power and sound levels. Constant performance, low energy consumption and precise comfort.
Summer
Cooling capacity up to 10.7 kW (larger models).
Winter
Heating capacity up to 11.7 kW.
Mid-seasons
Modulated regulation via EC motor; precise comfort control.
Gallery
Choose the configuration that best suits your needs
Versions with casing
VA, HA, VB, HB, VL, HL
Versions without casing
VC, VD, VE, HC, HD, VF
Low-profile versions
LOW Zefiro (VL, HL)
| Cooling capacity |
kW | 0.6–10.7 |
| Heating capacity |
kW | 0.6–11.7 |
| Air flow rate |
m³/h | 81–2211 |
| Available motors |
- | EC brushless (0–10 V) AC (up to 4-pipe configuration) |
| Sound data |
dB(A) |
Sound power: 34–64 dB(A) |
Designed to guarantee high performance with low consumption and materials built to last over time.
Energy savings
Up to 67% lower consumption thanks to continuously variable EC brushless motors.
Improved air quality
Compatible with integrated IAQ systems for advanced sanitization and filtration.
Robust and durable structure
Resistant materials and solid construction ensure long-term reliability.
Download the brochure
All detailed technical information, available models, possible configurations, and installation diagrams in a single PDF document.
• Complete electrical and hydraulic diagrams • Dimensions and weights of all models • Available accessories and compatibility • Detailed performance curves
Area reserved for designers and installers
Access the complete technical documentation reserved for professionals
How Zefiro is made
Each Zefiro unit is designed, assembled and tested entirely in our Italian facilities.
We do not market third-party products: we have been manufacturers since 1986, with over 30 years of experience in dehumidifiers for radiant systems.
In-house design
Every component is designed by specialized technicians.
Made-in-Italy assembly
Assembly and testing carried out in Italy with European certifications.
Individual testing
Each unit is individually tested before shipment.
Answers to the most common questions about ZEFIRO
Yes. The VC, VD, VE, VF, HC and HD versions are designed for recessed installation.
For Zefiro VF and HD, dedicated kits (CCM + MPK, MPK-HD) are also available to complete the aesthetic look and simplify site preparation.
Yes. Zefiro can integrate advanced IAQ technologies such as:
- SANI FAN, for sanitizing the internal surfaces of the fan coil
- BIOXAIR, for sanitizing air ducts
- FILTRASAN, a filtering media with antibacterial treatment
These systems help reduce microbial load and are also effective against viruses.
Yes. Zefiro can be managed through:
- TOP3-BMS (Modbus protocol)
- AERLINK, for browser-based supervision of up to 32 units per device
- BACnet/IP and BACnet MS/TP protocols
This makes it easily integrable into building automation systems, hotels and offices.
Yes. Thanks to continuously variable EC brushless motors (0–10 VDC), Zefiro ensures very low sound power levels (from 34 dB(A) in the smallest models).
This makes it ideal for bedrooms, hotels and environments where acoustic comfort is essential.
Yes. Depending on the version, Zefiro is available in both 2-pipe and 4-pipe configurations, with Eurovent-certified performance.
Yes. With the optional HDP accessory, a vertical unit can be converted into a horizontal one.
This feature increases on-site flexibility and simplifies project adaptations.
