BSK Notus is a new generation of central heat recovery ventilation units with a modern EPP construction, a heat exchanger with up to 90% efficiency, and intelligent WiFi control. This version with a built-in preheater is optimised for cold winters — frost protection is integrated directly in the unit, with no need for external accessories.
Key Benefits
BSK Connect — Mobile App
WiFi is standard on all units. Via the BSK Connect app (iOS / Android), you can monitor and control the unit from anywhere — at home or remotely via BSK Cloud.
4" Touch Display (Optional)
The optional wall-mounted controller with a 4" touch display gives you full overview and control of all functions directly on the wall — including mode selection, temperature readouts, and alerts.
Defrost Mode
When the temperature drops below 0 °C and the built-in preheater is active, the unit automatically manages supply and exhaust airflow to prevent frost build-up in the heat exchanger.
Energy Class A — Low Consumption
EC fans with automatic power management, double-walled metal casing with 25 mm insulation. Maximum power draw (including preheater): 1,150 W; normal operation is a fraction of this.
Suitable for Homes up to 225 m²
Maximum airflow of 375 m³/h covers the ventilation needs of most family homes. The unit supports horizontal and vertical installation with an electronically switchable left/right configuration.
Air Filtration G4 (Optional F7)
Standard G4 filters capture dust and common particles. Optional F7 filtration is available for allergy sufferers — it captures pollen and fine microparticles.
BSK 4" Touch Display
The optional wall-mounted controller with a colour 4" display puts comfort right on your wall. At a glance, you can see the current temperature, humidity, and active mode — no need to reach for your phone.
What the display shows and controls:
- Temperature and humidity — indoor and outdoor
- Mode switching (Auto, Boost, Eco, Summer Bypass)
- Fan speed adjustment
- Weekly ventilation schedule
- Filter replacement and fault alerts
Smart Control in Your Hand
BSK Connect is a free app for iOS and Android that turns your smartphone into a full-featured ventilation controller. Monitor temperatures, adjust modes, and receive filter replacement alerts.
With BSK Cloud, you have access to the unit even when you're away from home — via mobile data or internet from anywhere in the world. Ideal for holiday properties or remote management of multiple installations.
Who Is BSK Notus with Preheater Ideal For?
This version is designed for new builds and renovation projects in areas with cold winters. The built-in preheater eliminates the need to purchase and install a separate external pre-heater.
The unit is also suitable for flats with central ventilation systems, office and commercial premises. Thanks to the ModBus protocol, it integrates easily into smart home systems (KNX, Loxone, and others).
How Much Will You Save? 10-Year Cost Comparison
Calculation for a 150 m² family home · gas heating · central European climate
Annual Ventilation Costs — 150 m² Home
Cumulative costs year by year — including ~€2,500 investment
* Calculation for a 150 m² family home, gas heating at €0.09/kWh, electricity at €0.21/kWh, central European climate (~80,000 Kh/year heating degree hours), air exchange rate 175 m³/h. Investment: BSK Notus €1,850 + installation ~€650. Actual savings depend on heating type, floor area, and usage patterns.
Technical Specifications
| Parameter | Value |
|---|---|
| Thermal efficiency | up to 90% |
| Max. airflow (@100 Pa) | 375 m³/h |
| Inlet / outlet diameter | 125 / 160 mm |
| Supply voltage | 230 VAC, 50 Hz |
| Maximum power draw (with preheater) | 1,150 W |
| Dimensions (W × D × H) | 500 × 500 × 800 mm |
| Weight | 19 kg |
| Noise level (at 1 m) | 50 dB(A) |
| Heat exchanger type | Hexagonal counter-flow plastic |
| Fan type | EC (energy-efficient) |
| Filtration (standard / optional) | G4 / F7 pollen |
| Humidity control | Yes — built-in sensor, Boost mode |
| Free Cooling (summer bypass) | Yes — 100% bypass damper |
| Defrosting | Yes — automatic at T < 0 °C |
| Built-in preheater | Yes — electric |
| Communication protocol | ModBus |
| Control | WiFi + BSK Connect app + Cloud |
| Installation | Horizontal / vertical, left / right |
| Floor area coverage | up to 225 m² |
| Manufacturer | BSK Havalandırma (Turkey) |
Heat Recovery That Handles Every Winter.
BSK Notus with built-in preheater is a complete central ventilation solution for cold-climate conditions — high efficiency, intelligent control, and frost protection without compromise.
| Brand | BSK |
| Max. air flow m³/h | 375m³/h |
| Thermal Effective | up to 90% |
| Output diameter | 125/160 mm |
| Input diameter | 125/160 mm |
| Supply Voltage | 230 VAC, 50 Hz |
| Max Power | 1150 W |
| Dimensions | 500x500x800 mm |
| Weight | 19 kg |