DomoSerwis · Hardware repair · Warsaw and nearby areas
SIEGENIA window hardware repair in Warsaw
SIEGENIA or AUBI markings help identify the hardware. We investigate windows that will not lock, open with difficulty or fail to operate in tilt mode.
Independent repair service. The installed assembly is identified before scope and price are agreed.

TITAN, FAVORIT and AUBI require different part checks
The official SIEGENIA catalogue distinguishes TITAN, FAVORIT and AUBI repair components. AUBI and FAVORIT gearbox repair kits are different. A manufacturer name alone is insufficient to order the right part.
We check markings on the gearbox strip, stay and hinges. Opening direction, hardware axis and sash size range affect selection. A full-strip photograph helps establish connections with the remaining mechanism.
Drive failure or a sash that has moved?
The handle may turn without moving the locking points. Alternatively, it may stop because an otherwise sound cam meets a misaligned keep. We distinguish these situations during inspection, checking perimeter connections, stay operation and the condition and fixing of the hinge side.
- Incorrect opening movement: examine the mishandling device and stay engagement.
- Handle turns without locking: check spindle, gearbox and connected components.
- Sash drops or rubs: inspect supports, fixings and overall geometry.
A repair must work with the remaining hardware
Options include adjustment of sound components, maintenance or replacement of an identified damaged part. A manufacturer catalogue listing does not mean that the part fits every window or is immediately available. Compatibility and supply are checked before the final repair proposal.
For older windows we also assess adjoining connections. A gearbox replacement must work with the remaining components. If a wider repair is required, we explain why and agree it first. Finally, we check locking and all available opening modes.
Prepare for an inspection
Photograph the markings, top corner and bottom hinge where they are safely accessible. Do not dismantle the hardware. Let us know whether the fault appeared suddenly or operation gradually became worse.
- 1. Call +48 786 510 832 and tell us where the window is located.
- 2. Inspection identifies the system and the damaged component or incorrect setting.
- 3. Agree price and scope, complete the selected work and check sash operation.
Construction and mechanism details
The images show different component types. We select parts using the construction and markings of your own window or door.


From a photo to an agreed repair
Show the problem
An overall view, component close-up and accessible markings.
Identify the cause
We inspect the construction and explain the required work.
Agree the repair
Cost agreed first, suitable parts and an operation check.
Questions before booking
Can older AUBI hardware still be repaired?
Repair components are catalogued for certain AUBI mechanisms. Whether one can be used depends on the exact part, window condition and availability.
Do TITAN and FAVORIT use identical replacements?
We do not select them interchangeably on the manufacturer name alone. The family, part identification, dimensions and connections must be checked.
Does a freely turning handle mean a failed gearbox?
That is one possible cause. We also check the handle fixing, spindle and movement transmitted to the other hardware components.
Is a photograph of the bottom hinge enough?
It is useful, but the strip markings and upper components are usually also needed. The full identification is confirmed during inspection.
Related topics
Gearboxes and locking strips
Handle moving without operating the locking points, or window stopping between modes? DomoSerwis checks the gearbox, espagnolette and connected fittings to identify an appropriate repair.
View inspection and part selection →Service by componentWindow hinges
Window rubbing, movement at a hinge or a cracked component? DomoSerwis checks hinges, fixings and sash position, distinguishing adjustment needs from damage before recommending work.
View inspection and part selection →Service by componentWindow handles, balcony catches and mechanisms
Is the handle loose, stiff or failing to move the locking mechanism? Does the balcony door spring away from the frame? Choose the relevant component below. We check its mounting and the complete system before proposing replacement.
View inspection and part selection →Service by componentWindow hardware and profile brands
A name on the frame, handle and hardware strip may refer to different manufacturers. We help distinguish the profile from the operating mechanism and establish which component needs attention.
View inspection and part selection →Tell us about your SIEGENIA or AUBI fault
Describe the symptom and arrange an inspection in Warsaw or nearby. No part number needed.
+48 786 510 832 · Warszawa
DomoSerwis is an independent window and door service. Manufacturer names identify systems and do not imply authorisation or representation.
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