Compact
350 × 21 × 9 mm
Slim profile sits flat on top of the sash — almost invisible from across the room.
No drilling · Installs in 10 minutes
Fresh air through your windows.Even when they're closed.
Air-Vent Comfort is a discreet trickle vent that fits onto any PVC window. It ends condensation, stuffy rooms and mould — without draughts and without compromising security.
- Fresh air with windows closed
- Easy mount — no window frame milling
- No draught · no temperature drops
- Reduces noise vs an open window
Why ventilation matters
Stuffy rooms?
Modern PVC windows seal tight. Without ventilation, CO₂, humidity and odours build up overnight.
Condensation & mould?
Trapped moisture creates the perfect environment for mould on frames and walls.
Don't want to open the window?
An open window brings cold, dust, noise and security risks. Air-Vent Comfort solves all of it.
How it works
Two steps. Continuous fresh air.
Air-Vent replaces a small section of the window seal so outdoor air can enter the channel between frame and sash, then flow gently through the vent into the room.
01
Air enters the seal channel
A small fragment of the standard window seal is replaced with a special perforated seal.
02
Vent diffuses it into the room
The vent on top of the sash gently spreads the fresh air upwards — no draught at face level.
03
Adjust with a finger
A simple slider lets you regulate airflow steplessly, or close it completely.
Benefits of the Air-Vent Comfort trickle vent
Discreet
Blends with white PVC frames
Matt-white finish matches standard PVC windows — no industrial look.
Complete kit
Everything in the box
Air-Vent valve, two special perforated seals, and 3 mounting screws.
Mount it your way
Horizontal or vertical installation
Place it on the top of the sash for classic ventilation, or vertically on the side for extra acoustic shielding. Either way, fits in minutes.
- Better sound insulation than an open window
- Compact footprint, barely noticeable
- Stepless manual airflow regulation
Engineered for PVC windows
Inside the seal channel
Cross-section of a tilt-and-turn PVC window. Outdoor air enters at the side of the sash where a small piece of standard seal is replaced with the perforated Air-Vent seal, then rises through the vent into your room.
One vent. €12. Fresh air all year.
Free yourself from the choice between stuffy air and an open window. Ships across Europe within 2–5 business days.