Fans and ventilation systems for residential, industrial, commercial

KWL know-how for every project phase

By professionals, for professionals: the new Practical Guide for the Planning and Installation of centralised KWL Systems brings together our curated expertise, from design all the way to maintenance.

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KWL know-how for every project phase

Download here

Game on: Upgrade Air

Discover the new KWL EC 70 and its many installation options in our retro-vibe video game in a whole new way. Ready for your mission?

Start mission

Game on: KWL EC 70

Discover the new KWL EC 70 and its many installation options in our retro-vibe video game in a whole new way. Ready for your mission?

Start mission

One family. Fits in anywhere.

Four series, over 30 unit types – one powerful product family designed to master any challenge. Helios AIR1 offers the right ventilation solution with heat recovery for your project.

Learn more Configure AIR1 online

Back in black.

Our classics ultraSilence ELS, MiniVent M1/100 and DLV 125 are now also available in black.

learn more

Back in black.

Our classics ultraSilence ELS, MiniVent M1/100 and DLV 125 are now also available in black.

learn more

The new ELS NFC

A perfectly parameterised mono tube ventilation system in just a few seconds. You can configure the new ELS NFC via app - without electricity or the internet and even in the packaging.

Learn more

The new ELS NFC

A perfectly parameterised mono tube ventilation system in just a few seconds. You can configure the new ELS NFC via app - without electricity or the internet and even in the packaging.

Learn more

News

Planner at a desk in front of a monitor displaying the KWLeasyPlan planning software for residential ventilation.

From project to material list: KWLeasyPlan can now do even more

One building, many apartments, each with different requirements: with KWLeasyPlan, you can now handle all of this within a single project. We have fundamentally redesigned our free planning software.

More information

Two white Helios ventilation units for controlled residential ventilation, set against a white background.

2 control modes, 1 unit: Helios KWL units now featuring Constant Flow

We are equipping our KWL 170 W, KWL 250 W, KWL 360 W and KWL 470 W central ventilation units with Constant Flow technology – including versions with enthalpy heat exchangers.

The new Practical Guide for the Planning and Installation of Centralised KWL® Systems from Helios

Everything you need in one place: The new Helios Practical Guide for KWL Systems

With the new Practical Guide for the Planning and Installation of Centralised KWL Systems, we're providing a fully redeveloped reference guide that supports planners and installers throughout their...

A Helios service vehicle in front of the headquarters having just won the Plus X Award for best customer satisfaction.

Helios remains the customer favourite: eighth consecutive Plus X Award

Eight times in a row at the very top, and it still feels special. Helios has once again been awarded the Plus X Award "Best Customer Satisfaction 2026".

The Helios KWL EC 70 was awarded the Haustec Readers' Choice Award 2026.

Two in a row: KWL EC 70 wins the haustec.de Reader’s Choice 2026

Following the Best of SHK Award, our KWL EC 70 continues its award-winning streak: readers of the haustec.de online portal have chosen our decentralised ventilation unit as the winner of the...

Gunther Müller and Andreas Faißt receive the Best of SHK Award 2026

Best of SHK Award 2026 for KWL EC 70

Our new decentralized ventilation unit has been awarded the “Best of SHK Award 2026” in the ventilation sector. In the readers’ choice of the trade magazine Si, our new KWL EC 70 took first place.

Let's play! Interaktives Produktvideo zum KWL EC 70 erleben.

Upgrade Air: Experience KWL EC 70 in an interactive experience with Retro-Vibes

Discover how ventilation becomes a true gamechanger! In our brand-new retro-style interactive experience, you can explore our decentralised all-rounder, the KWL EC 70, and its range of installation...

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Helios Portfolio

Small room fans

Balanced domestic ventilation without heat recovery

Ventilation with heat recovery for apartments and single-family houses

Compact units with heat recovery for residential and non-residential buildings

Air purifiers and CO<sub>2</sub> monitors

Air purifiers and CO₂ monitors

Axial and VAR fans

Box fans

Round duct fans

Rectangular duct fans

Roof fans

Smoke extraction, smoke control and parking garage ventilation

Jet fans

Explosion-proof fans

Measure. Control. Regulate.

Air treatment

Mechanical accessories

Exhibition dates

We are on tour

Experience our latest innovations and highlights from our product range. Or get into conversation with our ventilation experts over a light refreshment. We are represented for you at all important industry meetings throughout the year and look forward to welcoming you at one of our trade fair stands.

The next events

GET Nord

19.11.2026 – 21.11.2026

Hamburg, DE

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