Ubbink Air Excellent Ventilation Ductwork
High-Performance Airtight Ductwork
Ubbink Air Excellent Ductwork
The Ubbink Air Excellent range is the benchmark for radial ventilation ductwork. It is the only system certified to ATC1 — the highest airtightness class — independently tested at ±1000 Pa, far beyond real-world HRV and ERV operating pressures.
Air Excellent is also uniquely TÜV SÜD and ISEGA certified and REACH compliant, verifying airtightness, material safety, hygiene, and long-term suitability for residential ventilation.
Manufactured with anti-static and antimicrobial properties and engineered for exceptionally low air resistance, the system delivers lower duct pressures than competing radial ductwork. Every component is designed to work as a complete system to minimise pressure loss.
Ubbink Air Excellent is available in four sizes:
- AE48C — 90 mm outer diameter.
- AE34C — 75 mm outer diameter.
- AE45SC — 50 x 140 mm outer diameter.
- AE35SC — 50 x 100 mm outer diameter.
Circular ducting (AE48C, AE34C) is the most cost-effective option, offering the lowest air resistance and is preferred wherever space allows. Semi-circular ducting (AE45SC, AE35SC) is used where height is limited, allowing ducts to be concealed in shallow cavities.
Good system design keeps air velocity below 3 m/s to reduce noise. Larger ducts (AE48C, AE45SC) carry higher airflow with lower resistance than smaller sizes (AE34C, AE35SC) and often allow one duct to replace two smaller ducts.
Ubbink Air Excellent AE48C Components
Air Excellent AE48C is the largest circular duct in the Air Excellent range.
- 90 mm outer diameter.
- 48 m³/h at 3 m/s.
- 30 m³/h at 1.9 m/s at 0.9 Pa/m.
Ubbink Air Excellent AE34C Components
Air Excellent AE34C is the smallest circular duct in our Air Excellent range.
- 75 mm outer diameter.
- 34 m³/h at 3 m/s.
- 30 m³/h at 2.7 m/s at 2.9 Pa/m.
Ubbink Air Excellent AE45SC Components
Air Excellent AE45SC is the largest semi-circular duct in our Air Excellent range.
- 50 x 140 mm outer diameter.
- 47 m³/h at 3 m/s.
- 30 m³/h at 1.9 m/s at 1.0 Pa/m.
Ubbink Air Excellent AE35SC Components
Air Excellent AE35SC is the smallest semi-circular duct in the Air Excellent range.
- 50 x 100 mm outer diameter.
- 33 m³/h at 3 m/s.
- 30 m³/h at 2.7 m/s at 3.0 Pa/m.
Ubbink Air Excellent Distribution Boxes
Distribution boxes connect the ventilation unit to supply and extract valves, with airflow balanced using restrictors at each connection. Distribution box selection depends on airflow, duct count, and system design, and Air Excellent distribution boxes uniquely accept all duct types, allowing different duct sizes to be used within the same system.
- The 200 Series is a modular system designed for smaller air volumes and space-constrained installations.
- The 800 Series offers a universal, high-capacity solution, and supports mass-flow duct connections from 125 to 200 mm using stepped adaptors.
Ubbink Air Excellent Valves and Grilles
The Haelix valve is a modern supply and extract valve for residential ventilation systems, available in round and square designs for DN125 valve adaptors. It uses the Coanda effect for even air distribution and includes a flange to reduce ceiling dust deposits. Haelix has a 9-step air flow restrictor, but when used with Air Excellent systems, airflow is set at the distribution box so the valve installs without the need for additional adjustment.
Ubbink floor/wall grilles combine elegant design with high functionality, ensuring smooth airflow and a clean finish in any interior. The rectangular air inlet ensures a smooth and efficient flow of fresh air into living spaces.
Ubbink Air Excellent Accessories
Air Excellent accessories are designed to complete, adapt, and fine-tune centralised HRV/ERV installations. The range includes stepped and inline adaptors for connecting mass-flow ducting, internal and external air restrictors for accurate airflow balancing, direct connection sleeves for AE48C 90° bends, acoustic insulation for noise reduction, protective covers, universal mounting brackets for semi-rigid ducts, and purpose-made cutting tools for clean, precise duct preparation. Together, these components ensure flexible installation, correct airflow distribution, low noise performance, and a professional finish.
Ubbink Wall Terminals
The Contego Wall Terminal is suitable for centralised mechanical ventilation, handling both supply and extract air via Aerfoam insulated ducts. It prevents water drips, minimizes dirt build-up, and has a bottom grille to block pests. Made of durable, UV-resistant PP, its black-grey matte finish blends with walls. Installation is quick, with a wall-mounted base for easy access and a cap that clips on top.
