BSK Notus HV — residential heat recovery unit with counter-flow plate exchanger, up to 90% efficiency, 375 m³/h airflow, EPP body, G4 filters, WiFi + BSK Connect app. Vertical and horizontal installation in one unit.

High-performance decentralized heat recovery unit for a single room. Offers up to 90% heat recovery efficiency, low energy consumption, and ultra-quiet operation. Features WiFi control, remote control, 4 fan speeds, and automatic humidity regulation.

PRANA Extension 25 cm is a practical accessory that allows the installation of the heat recovery unit into thicker walls.

Flexit Nordic S2 — compact central ventilation with rotary heat exchanger, up to 85% efficiency, 349 m³/h, 2×F7 filters and Flexit GO app control. For homes up to 130 m².

Lightweight, durable, and energy-efficient EPP duct ideal for modern, silent, ecological and easy-to-install ventilation systems.

Transition box AST 2xDN75/125, 400 mm. DN75 refers to the 75 mm outside duct diameter; the inside diameter is 63 mm.

Transition box AST DN90/125, 400 mm. DN90 refers to the 90 mm outside duct diameter; the inside diameter is 75 mm.

BSK Notus – ceiling-mounted heat recovery unit with smart control for modern living.

Spiro duct 100 mm, 3m – Rigid spiral ducting for optimal airflow in HRV/ERV and HVAC systems. Minimal pressure drop and high durability.

ProNordic S100R — commercial AHU, rotary heat exchanger, 1 275 m³/h, Ø250 mm connection, ePM1 55% filters, Siemens Climatix CS2500, Modbus. Fits 70 cm door.

Spiro duct 125 mm, 1.5m – Rigid spiral ducting for optimal airflow in HRV/ERV and HVAC systems. Minimal pressure drop and high durability.

Spiro duct 125 mm, 3m – Rigid spiral ducting for optimal airflow in HRV/ERV and HVAC systems. Minimal pressure drop and high durability.

Spiro duct 160 mm, 1.5m – Rigid spiral ducting for optimal airflow in HRV/ERV and HVAC systems. Minimal pressure drop and high durability.

Spiro duct 160 mm, 3m – Rigid spiral ducting for optimal airflow in HRV/ERV and HVAC systems. Minimal pressure drop and high durability.

Flexit EcoNordic WH4 — ventilation, heating and hot water in one unit. Rotary exchanger >90%, CO₂ heat pump, 197 l hot water tank, Flexit GO app control. For homes up to 220 m².

Flexit Nordic S3 — central air handling unit with rotary exchanger, up to 85% efficiency, 361 m³/h, 2×F7 filters, humidity sensor and Flexit GO. For homes up to 160 m².

Lightweight, durable, and energy-efficient EPP duct ideal for modern, silent, ecological and easy-to-install ventilation systems.

Transition box AST 2xDN90/125, 400 mm. DN90 refers to the 90 mm outside duct diameter; the inside diameter is 75 mm.

Transition box AST Classic 2xDN75/125, 300 mm. DN75 refers to the 75 mm outside duct diameter; the inside diameter is 63 mm.