HRH AERHigh-efficiency air-to-air heat recovery ventilation unit
Quiet, efficient and ideal for non-residential buildings.
A complete solution for schools, offices and public buildings: high-efficiency heat recovery, advanced filtration and low-consumption EC fans. Stable performance, integrated free-cooling and maximum energy savings.
High-efficiency heat recovery
The aluminium counterflow heat exchanger exceeds the requirements of EU Regulation 1253/2014, achieving recovery efficiencies above 80% in real-world conditions and up to 86.5% in the smaller sizes.
Motorised bypass for free-cooling
All versions include a motorised bypass system that automatically activates free-cooling when outdoor air temperature is favourable, reducing energy consumption and ensuring optimal comfort.
25 mm insulated double-skin panels
The structure is made of double-skin panels with:
- external pre-painted steel,
- internal galvanized steel,
- intermediate mineral wool insulation 25 mm (class A2-s1,d0).
This configuration ensures high rigidity, excellent thermal-acoustic insulation and vibration reduction.
EC fans with backward-curved impellers
High-efficiency EC motor fans with backward-curved blades ensure:
- specific consumption far below regulatory limits,
- 0–10 V control,
- low noise levels (53 to 64 dB(A) at 1 m).
All data certified in the technical table.
Integrated electronic control
The onboard electrical panel manages:
- ventilation and temperature,
- filter monitoring,
- weekly scheduling,
- anti-frost and defrost cycles,
- fire alarm,
- Modbus interface for BMS supervision.
Wide airflow range
Six sizes, available in horizontal and vertical versions, cover airflows from 450 to 3800 m³/h.
Size 50 reaches up to 4500 m³/h.
HRH AER maintains optimal indoor conditions all year round thanks to high-efficiency recovery, automatic free-cooling and modulating ventilation. Stable temperature, continuous air renewal and reduced consumption with consistent comfort.
Summer
Free-cooling, combined with low filter pressure drops, ensures major energy savings when outdoor air is cooler.
Winter
The counterflow heat exchanger provides supply temperatures of 15–16°C even with very cold outdoor air.
Mid-season
Modulating EC fan control maintains constant airflow and pressure with minimized energy use.
Gallery
Choose the configuration that best suits your needs
Orientation
- Horizontal
- Vertical
Both available with 4 airflow configurations: types A, B, C, D.
Sizes
05 – 10 – 15 – 20 – 30 – 40 – 50
| Heat recovery efficiency |
- | 83–86.5% in humid conditions 75.8–79% in dry conditions (EU 1253/2014 compliant) |
| Available static pressure |
Pa | 160 – 510 |
| Power input |
m³/h | 330–3010 W (nominal) Up to 4850 W (max size 50) |
| Power supply |
W | 230V-1ph-50/60 Hz (sizes 05–20) 400V-3ph+N-50/60 Hz (sizes 30–50) |
| Sound levels |
dB(A) | 53–64 dB(A) at 1 metre |
Download the full 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 HRH AER is made
Every HRH AER unit is designed, assembled and tested entirely in our facilities in Italy.
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 are carried out in Italy with European certifications.
Individual testing
Each unit is individually tested before shipment.
Answers to the most common questions about HRH AER
Between 83% and 86.5% depending on size, in humid conditions at nominal airflow.
Yes. The unit meets all requirements for efficiency, SFP and filters.
Yes, a motorised bypass is included for free-cooling operation.
F7 for outdoor air and M5 for return air, according to EN 779:2012.
In technical rooms, false ceilings or dedicated spaces, in horizontal or vertical orientation.
Access to fans and filters via hinged panels; additional filters are reachable from a removable panel.
From 450 to 4300 m³/h, with EC fans and backward-curved impellers.
