Flexit Nordic S7 SW is the most powerful central air handling unit in the Norwegian Nordic series — engineered for large family homes, multi-storey apartments and small commercial buildings up to 450 m². The patented Stage Wheel rotary heat exchanger delivers a thermal efficiency of up to 86 %, airflow up to 700 m³/h and a built-in humidity sensor with full control via the Flexit GO app. The Ø200 mm duct connection enables coverage of extensive ductwork systems with minimal pressure losses. Available in right-hand (RER) and left-hand (REL) configurations. Energy class A+ with local demand control.
Key Benefits
Smart Control with Flexit GO
Control the unit from anywhere via the mobile app or web interface. Modbus support for smart home integration. Optional NordicPanel touchscreen for local control with speed, temperature and timed boost settings.
Flexible Installation — Wall or Floor
Cabinet unit with adjustable vibration-dampening feet. Can be wall-mounted or floor-standing in both cold and warm rooms. The Ø200 mm duct connection ensures minimal pressure losses even in long duct runs. Available in left-hand and right-hand configurations.
Homes up to 450 m² — one unit for the entire building
With airflow up to 700 m³/h, the Flexit Nordic S7 covers large family homes, multi-storey apartments and small commercial spaces. A single central unit replaces multiple smaller ventilation units — simpler maintenance and lower operating costs.
Healthier Air Throughout the Home
Dual F7 filtration (ePM1 70 %) captures up to 99 % of coarse particles and 70 % of fine PM1 dust. Heat recovery removes excess humidity and CO₂, reducing the risk of mould growth and allergic reactions.
Why Stage Wheel?
Stage Wheel is a patented 4th generation rotary heat exchanger developed by Flexit over more than 10 years. The combination of aluminium and polymers breaks the longitudinal heat conduction parallel to the airflow — resulting in up to 10 percentage points higher heat recovery efficiency compared to standard rotors.
The optimised internal surface roughness reduces airflow resistance while simultaneously improving heat transfer. The result: less noise, lower energy consumption and higher heat recovery.
Cooling recovery is a standard feature — the unit rejects heat from the supply air in summer and recovers it in winter. For sub-zero operation, a defrost function is available in the Flexit GO app, ensuring reliable year-round performance.
Annual Energy Savings
Flexit Nordic S7 significantly reduces heating costs thanks to the patented Stage Wheel exchanger and high airflow capacity. Estimated annual savings by climate zone (EPREL data):
(e.g. Scandinavia, mountain regions)
(e.g. Central Europe)
(e.g. Mediterranean region)
Technical Specifications
| Parameter | Value |
|---|---|
| Temperature efficiency | up to 86 % |
| Max. airflow | 700 m³/h (195 l/s at 200 Pa) |
| Heat exchanger type | Rotary Stage Wheel (enthalpy, 4th gen.) |
| Energy class | A+ (with local demand control) |
| Filter class | 2× ePM1 70 % (F7) |
| Filter dimensions | 300×269×96 mm |
| Sound power level | 41 dB(A) |
| Rated voltage | 230 V / 50 Hz |
| Rated power (total) | 1,855 W |
| Fan power | 2×170 W |
| Electric post-heater (optional) | max. 1,500 W |
| Rated current | 8.1 A |
| Duct connection | Ø200 mm (nipple) |
| Recommended floor area | up to 390–450 m² |
| Dimensions (W×H×D) | 1,000×839×589 mm |
| Weight | 82.5 kg |
| Colour | White |
| Carry-over | 5 % |
| Control | Flexit GO (LAN, cloud, app) |
| Compatibility | Modbus, Flexit GO, NordicPanel (optional) |
| Accessories | Humidity sensor (built-in), CO₂ sensor, NordicPanel |
| Configuration | Right-hand (RER, Art. 800140) / Left-hand (REL, Art. 800141) |
| EPREL | 2240765 |
Flexit Nordic S7 vs S4 vs S3 — which model to choose?
Nordic S7 is the most powerful model in the entire Nordic series — airflow up to 700 m³/h, Ø200 mm duct connection and coverage up to 450 m². Compared to the S2–S4 models, it features the patented Stage Wheel rotor with higher efficiency and energy class A+. Ideal for demanding projects where smaller units are not sufficient.
For mid-size homes, choose Flexit Nordic S4 (461 m³/h, Ø160 mm). For smaller apartments and homes, consider Flexit Nordic S3 (361 m³/h, Ø125 mm) or Flexit Nordic S2 (349 m³/h, Ø125 mm).
Maximum performance. Patented technology. Healthy air for the entire building.
Flexit Nordic S7 SW is the most powerful central air handling unit in the Nordic series with the patented Stage Wheel exchanger, airflow up to 700 m³/h and energy class A+ — available in right-hand (RER) and left-hand (REL) configurations.
| Model (Exterior side) | REL (Left) or RER (Right) |
| Brand | Flexit |
| Colour | White |
| Duct connection | Ø 200 mm |
| Weight | 82.5 kg |
| Rated voltage | 230 V |
| Width (mm) | 1000mm |
| Height (mm) | 857mm |
| Depth (mm) | 600mm |