Air supply valves for windows and doors
Fresh air without draughts or heat loss. We install air supply valves on PVC, wooden and aluminium windows — a thoughtful solution for modern living.
Book an installationSmart ventilation for your home
- AIR-BOX, BREVIS or AERECO valve
- Installation on a PVC, wooden or aluminium window
- Controlled air intake without draughts
- Humidity- and CO₂-sensitive options
- Acoustic valves with sound insulation
- Filter kit (optional)
- Warranty included
Why doesn’t a modern flat’s window “breathe”?
A modern window does not “breathe” not because something is wrong with it — on the contrary, because it is too airtight.
Before — in old wooden windows:
- ✓ There were gaps and micro-cracks
- ✓ Air came in naturally
- ✓ Spontaneous ventilation occurred
In modern PVC, wooden and aluminium windows:
- ✗ Complete airtightness
- ✗ Multi-chamber glass units
- ✗ Seals block the air intake
👉 As a result:
- • No natural air exchange
- • Humidity rises
- • Condensation appears on the glass
- • Mould can form
- • The air becomes “stuffy”
It’s important to understand: the window shouldn’t “breathe” — the ventilation system should.
The solution:
- → Regular airing
- → Micro-ventilation (if the function exists)
- → Installing air supply valves
- → Setting up proper ventilation in the flat
In short: the more modern the window, the more carefully planned ventilation it needs.
An air supply valve — simple and effective
An air supply valve is fitted in the upper window frame and provides a controlled intake of fresh air without opening the windows. It is almost invisible on the window and does not reduce insulation.
AIR-BOX COMFORT / ECO
A self-regulating air supply valve for PVC windows — installation without milling or drilling. COMFORT: max. 43 m³/h. ECO with a G3 filter: max. 32 m³/h. Noise reduction 35 dB. 3 colours.
from €17 Learn more ↓
BREVIS Ventair II TRDN
An automatic air supply valve with pressure-based adjustment and manual control. Max. air flow 26.1 m³/h, sound insulation 34 dB. An aluminium and ABS/ASA body for PVC and wooden windows.
from €30 Learn more ↓
AERECO EMM
A hygro-regulated acoustic valve — automatically adjusts the air flow to the humidity level in the room. Max. flow 30 m³/h, sound insulation 34 dB. E-EHA² acoustic base. Available in 5 colours.
from €83 Learn more ↓
How is an air supply valve installed?
Installation does not require removing the window — the technician mills the valve into the existing PVC or wooden window frame. The process takes 30–90 minutes per window and leaves no mess.
- Free consultation and a check of the window’s suitability
- Installation without removing the window — minimal disruption
- Precise milling — no cracks or heat loss
- We work with PVC, wooden and aluminium windows
- Instructions for adjusting the valve and a 2-year warranty
Installation prices
The price includes the valve, milling and installation. Free on-site quote (in Riga only*).
| Valve model | Description | Price (excl. install.) | Installation |
|---|---|---|---|
| AIR-BOX COMFORT | Without filter, self-regulating, installation without milling | €17 | €10 * |
| AIR-BOX ECO | With G3 filter (dust, pollen, spores) | €29 | €10 * |
| BREVIS Ventair II TRDN | Automatic + manual adjustment | €30 | €50 * |
| BREVIS Ventair II TRDN with filter | Automatic + manual adjustment, with filter | €44,50 | €50 * |
| AERECO EMM | Hygro-regulated, automatic adjustment by humidity | €83 | €50 * |
| AERECO EMM with acoustic base | Hygro-regulated + E-EHA² acoustic base | €118 | €50 * |
* The installation price applies to standard windows where the mounting point is no higher than 2.5 m from the floor. If the installation is complicated by additional factors — non-standard height, a hard-to-reach location or special structural requirements — the final price may differ. Please confirm the exact calculation with our manager.