Is a window actuator faulty, discontinued or too expensive? The replacement table shows which Vent Systems actuator can serve as an alternative for common types from other manufacturers – with net price and a link to the detailed guide.
In brief: What matters for the replacement are thrust force, stroke, voltage (24 V or 230 V) and the mounting on the window. If these values match, the actuator can usually be replaced without modifying the window. All actuators are in stock in Hamburg.
Replacement table
| Previous manufacturer | Type | Possible alternative (net price) | Guide |
|---|---|---|---|
| GEZE | Slimchain | VS-KA (from €65), VS-KA-i (from €145) | Details |
| GEZE | Powerchain | VS-KA-i (from €145), VS-KA 2500 (from €290) | Details |
| GEZE | ECchain (230 V) | VS-KA (from €65) | Details |
| GEZE | E 212 (fanlight) | VS-KA (from €65), VS-DKA 800 (from €196) | Details |
| GEZE | other types | VS-KA (from €65), VS-KA-i (from €145), VS-KA 2500 (from €290), VS LA (from €110) | Details |
| D+H | KA 34, KA 54, CDC, VCD | VS-KA (from €65), VS-CKA 300 (from €155), VS-KA 2500 (from €290) | Details |
| Aumüller | KS2, KS4 | VS-KA (from €65), VS-KA-i (from €145) | Details |
| Aumüller | other types | VS-KA (from €65), VS LA (from €110), VS-KA 2500 (from €290) | Details |
| WindowMaster | WMX, WMU | VS-KA (from €65), VS-CKA 300 (from €155), VS-KA 2500 (from €290) | Details |
| WindowMaster | WML 825 (roof window) | VS-KA (from €65) | Details |
| HAUTAU | SKA, EKA | VS-KA (from €65), VS-KA 2500 (from €290) | Details |
| Kingspan STG / STG-Beikirch | rooflight actuators | VS LA (from €110) | Details |
| LAMILUX | rooflight motor | VS LA (from €110) | Details |
| SIMON RWA | PA-K-20, PA-K-50 | VS-KA (from €65), VS-CKA 300 (from €155), VS-KA-i (from €145) | Details |
| Nekos | KATO | VS-KA (from €65), VS-KA-i (from €145) | Details |
| Mingardi | Micro 02, Micro+ | VS-KA (from €65), VS-KA-i (from €145) | Details |
| Rooflight (any manufacturer) | linear, spindle or chain actuator | VS LA (from €110), VS-SA 2500 (from €170), VS-KA 2500 (from €290), VS-ZA 800 (from €105) | Details |
| Window actuator (any manufacturer) | chain or linear actuator | VS-KA (from €65), VS LA (from €110) | Details |
Prices are net prices from our shop (as of October 2026, plus shipping). For projects with many windows we prepare a quote with volume prices.
Replacement for your manufacturer: D+H · GEZE Powerchain · SIMON RWA · Nekos · Mingardi. In the glossary: thrust force · Stroke length
How to check whether the replacement fits
- Photograph the type plate: manufacturer, type, voltage, thrust force and stroke are usually stated on it.
- Measure the stroke: how far the window opens, in millimetres.
- Check the voltage: 24 V (with control unit) or 230 V (directly on the switch).
- Look at the mounting: surface-mounted on the frame or concealed in the profile.
- SHEV systems: If the actuator is part of a smoke ventilation system, it is only replaced in agreement with the installer; the system is operated with an approved smoke control panel, which is not part of the Vent Systems product range.
Send us a photo of the type plate via the measurement sheet – we will tell you the right replacement. You can also check force and stroke yourself with the Window actuator calculator .
Note: The brands and type designations mentioned belong to their respective owners. Vent Systems is not affiliated with these manufacturers; the information only serves to identify possible alternatives. Whether an actuator fits in an individual case depends on the window and installation situation.
Frequently asked questions
What information do I need for a replacement actuator?
Usually three values from the old actuator's rating plate are enough: thrust in newtons, stroke in millimetres and operating voltage (24 V or 230 V). Plus a photo of how it is mounted on the window.
Can I replace a 24 V actuator with a 230 V actuator?
Not without modifications. 24 V actuators run via a control unit or power supply, 230 V actuators directly from a switch. The easiest option is a replacement with the same voltage. If the voltage is to change, a qualified electrician must adapt the wiring.
Will the brackets of the old actuator fit?
Usually not, as every manufacturer uses its own brackets. Our chain, linear and rack-and-pinion actuators VS-KA, VS-LA and VS-ZA include a standard bracket set. Special brackets are available for special profiles.
Can I also use them to replace smoke ventilation (SHEV) actuators?
Our actuators are intended for daily ventilation and have no test certificate according to DIN EN 12101-2. If the old actuator is part of a smoke and heat exhaust system, the installer or specialist company decides on the replacement.
How quickly will the replacement actuator arrive?
Many actuators are in stock in our Hamburg warehouse. Stock items are shipped within Germany within 24 hours.
My manufacturer or type is missing from the table – what now?
Send us a photo of the rating plate – the easiest way is the “Send type plate” button below. We will then name a suitable replacement or tell you honestly if we don't have one.
Technically reviewed by Dietmar Heiken, Sales, Vent Systems HDI GmbH, Hamburg – around 20 years of industry experience. Questions? Phone +49 40 50694631 or info@ventsystems.de
Last updated: 30.10.2026
Questions? 040 50694631 · info@ventsystems.de
