Grilles are the only visible part of a ventilation system, so we believe they should do more than function well. They should fit beautifully into your home. That’s exactly what this new portfolio was designed to do.
It consists of two distinct lines: the Classic Line, with familiar forms, clean geometry and timeless finishes, and the Design Line, which adds a more expressive look with like high-gloss glass-look. Each grille is carefully developed to perform quietly, install seamlessly and enhance the space it lives in.
Along the way, we involved potential users: homeowners, installers, planners and architects. Their input did more than confirm which styles people liked most. It helped us spot the designs with real potential.
This page invites you to discover the story behind the grilles; how they were developed, what sets them apart and why airflow has never looked this good.
Gabriel Pistorius, product designer
The Classic Line is our response to a portfolio that had become too fragmented, full of inconsistencies and legacy designs. Project Forest gave us the chance to rebuild, with a cleaner, more logical range that works across markets.
We kept the Italian city names for familiarity, but new designs like Milano and Bologna now raise the bar for the entire Classic Line assortment. They set a new standard in both appearance and performance; combining familiar forms with smarter detailing and lower pressure drop.
Inspired by timeless Italian design, the Milano blends soft curves with clean round perforations. Designed with a subtle 3D pattern and a dot/line line signature, it’s the modern evolution of our best-seller, Venezia. Just like its namesake city, Milano mixes classic taste with bold functionality.
Avaliable in shapes:
Meet Bologna. The floral hole pattern echoes classic architecture. Think countryside villas or high-ceilinged townhouses. Designed with renovation projects in mind, it offers standout airflow performance. It’s the quietest grille in the line, thanks to its generous open surface.
Avaliable in shapes:
With balanced proportions, Venezia is a quiet classic. Its straightforward design with evenly spaced round perforations offers reliable performance. ComfoGrid Venezia proofs that good design stands the test of time: it has been a favourite among professionals for years.
Avaliable in shapes:
This range is ideal for installers and contractors working on new-build single-family homes, where ventilation grilles play a significant role in ensuring balanced, efficient airflow throughout the living space. The Classic line offers a reliable, familiar solution that integrates seamlessly into a wide variety of interior styles and building concepts.
It’s designed for professionals who not only appreciate a clean, timeless appearance, but also value the practical advantages that make everyday work easier. The Classic line delivers what matters most on-site: products that install quickly, fit accurately, and perform consistently over time. With dependable quality and thoughtful design, these grilles provide a solid, trusted choice for modern residential projects.

The Design Line gave us space to try something bolder. We explored new shapes, materials and ways to let the grille stand out instead of blend in.
Not every idea made it, but one unexpected success was the glass-edge frame, originally a workaround from a supplier. It ended up being the perfect way to visually separate this line from the rest. The names are different too. They are drawn from gemstones to match the more refined, elegant feel.
Rubino makes a statement. Its hexagonal hole pattern and high-gloss glass-look finish give it a jewel-like presence. It’s inspired by the ruby: bold, angular and unforgettable. A true conversation starter for interiors that don’t play it safe.
Avaliable in shapes:
Topazio brings balance to your interior. Its minimalist lines and translucent frame evoke the clarity of topaz, elegant but grounded. Topazio’s beauty lies in its symmetry, simplicity and ability to fit effortlessly into modern living.
Avaliable in shapes:
Zaffiro, Italian for sapphire, reflects depth, calm and clarity. It’s a cool grille with a warm soul. Its rectangular shape and smooth glass-look edges offer a subtle contrast that lifts any room. Like the gem it’s named after, Zaffiro feels timeless and precious.
Avaliable in shapes:
The Design Line is perfect for spaces where visual impact matters just as much as airflow. It’s ideal for architects, interior designers, premium renovation projects, or homeowners who want to upgrade not only performance but also the overall look of their living space.
While the Design Line is used in smaller quantities, expectations are higher. Its distinctive glass-look edge frame brings elegance and refinement — but it also has one limitation: these grilles are not suitable for floor installation, which is why a CLF version is not available.
Because of the raised glass-look edge, there’s a risk of tripping or bumping into sharper corners if installed at floor level. The surface may also be more prone to scratches or marks from shoes, furniture, or cleaning equipment.



Each grille includes a discreet QR code for quick filter tracking and easy reordering. Maintenance reminders are now just a scan away.
Every product comes with an ownership card — a handy place to record filter changes and installer details for future service needs.
Our new square-shaped filters reduce material waste and feature a larger surface area, capturing more dust and lasting longer.
We’re developing an accordion-style filter design for even better dust retention and extended filter life — ensuring lasting performance.
Every detail matters. Our updated TVA frame now uses a single central pin — no glue, no hassle — for faster installation and a secure, sustainable fit.
Made from durable recycled polymer, it replaces older materials to reduce environmental impact while improving performance and longevity.
Because with Zehnder, even the smallest parts are designed to make a big difference.

Design grilles must always be used in combination
with a Zehnder ComfoSet. This module is used to
commission a ventilation system that includes nonadjustable valves or decorative grilles.
It can be installed either centrally at the distribution
unit or locally at the end of a Zehnder ComfoTube 90,
just before the plenum or grille. The ComfoSet enables
silent airflow reduction, with interchangeable discs that
allow resistance to be adjusted between 20% and 75%

General Request
Contact FormOffer Request
Contact FormService & Spare Parts Request
Contact FormGeneral request
+49 (0) 123 45 67Offer Request
+49 (0) 123 45 68