Air Handling Units
SKW Ruar
Air recirculation and heat recovery built around a runaround coil — keeping supply and extract airstreams physically separate for demanding indoor air quality requirements.
No Air Cross-Contamination
Runaround design
ErP Compliant
Regulation
Hospitals & Labs
Built for
Constant
Air volume control
Heat Recovery Without
Mixing the Airstreams
Built for demanding projects
SKW Ruar recovers heat between supply and extract air using two coils connected by a pumped glycol loop — a runaround system with no shared rotor or plate, so the two airstreams never mix. It improves indoor air quality and meets ErP regulations, making it well suited to hospitals and laboratories where cross-contamination between supply and extract air is not acceptable.
- Runaround coil heater and chiller
Two independent coils transfer heat without connecting the airstreams. - Optional chilled water coil
Adds cooling capacity where the project needs it. - ErP-compliant design
Meets current European ecodesign requirements for ventilation units.
Inside SKW Ruar
How it works
A pumped water loop carries heat from the extract-air coil to the supply-air coil — hover the markers on the diagram for the individual components.
Built Around Your Project
Configuration
Key Features
- Recirculation of exhaust and supply air with simultaneous constant mixing of outdoor air
- Controllable heat pump for energy recovery from the exhaust air
- Variable outside air volume flow for dehumidification with constant exhaust and supply air flow
- Heating register for reheating the supply air with low flow and return temperatures
- Temperature and humidity control
- Control cabinet mounted on the device or remotely on the wall
- Option: plastic heat exchanger
High-Quality Housing
- Acoustically insulated panels for low acoustic levels
- Casing classification TB2, T2, L1 [M], D1 [M]
- Robust design with up to 30% lighter weight
- Duct connections on the side or on top, adjustable on site
Typical Applications
- Large offices — efficient ventilation with ErP-compliant recovery.
- Standard hospitals — controlled indoor climate without airstream mixing.
- High-hygiene hospitals & labs — where cross-contamination between supply and extract air is not acceptable.
Frequently Asked Questions
Common questions
