About Us

With 15 years of experience, we have gained invaluable expertise and established ourselves as professionals in our field. However, the most valuable thing we have acquired is a clear understanding of how important results are for our clients.

  • 17 years

    of experience in window adjustment and maintenance

  • 7000+

    satisfied customers trust us and recommend us to their friends

  • 15%

    average reduction in heat consumption for our clients after adjustment and heat loss elimination

What do we do?

We do everything to make you feel comfortable and cozy again. We eliminate drafts and cold in your home, apartment, or office. And your windows and doors will look as good as new!

  • Diagnostics

    Checking the functionality of mechanisms and the tightness of sash presses. Identifying all window and door defects.

  • Adjustment and Maintenance

    Adjustment and lubrication of window and balcony door mechanisms, replacement of sealing gaskets.

  • Sealing and Insulation

    Sealing of all joints and seams, external and internal insulation.

  • Thermal Audit

    Identifying all causes of heat loss in your home. Providing a report and recommendations for defect elimination.

  • Repair

    Repair and replacement of mechanisms, locks, handles; correction of misalignments; replacement of fittings and double-glazed units.

  • Soundproofing and Modernization

    Soundproofing, installation of additional options, window reinforcement with protective film, and installation of "triplex" double-glazed units.

If you're unsure which services you need, simply order a diagnosis.
After our recommendations, you'll know exactly what work needs to be done.

Request a diagnostics

Our Partners:

Request a diagnostics:

Leave your message here and we will reply to you shortly.

Frequently Asked Questions (FAQ)

Komfortmeister is a specialized division of Treeberg GmbH, established to provide professional window maintenance, energy audits, and building services.

What services do you offer?

We provide comprehensive maintenance and repair services for plastic (aluminum, wooden) windows, doors, roller shutters, and mosquito screens, as well as energy audits:

• Adjustment and maintenance of plastic windows
• Seal replacement
• Lubrication and cleaning of fittings
• Repair and replacement of window fittings
• Elimination of drafts and leaks
• Adjustment for winter-summer mode
• Replacement of double-glazed units
• Installation of fabric roller blinds
• Installation of door closers
• Replacement of locks and locking mechanisms
• Installation of ventilation valves
• Sealing of slopes and joints
• Thermal imaging inspection (energy audit)
• Energy efficiency recommendations
• One-time services and regular maintenance under contract

Do you work only with businesses or also with private clients?

Our primary focus is corporate clients (B2B): property management companies, commercial real estate, and architects.

However, we also accept requests from private clients if we can accommodate them within our current schedule.

Can I sign a contract for regular maintenance?

Yes, we offer service contracts for B2B clients, which include:

• Scheduled visits 1–2 times per year
• Fixed pricing
• Priority service times
• Detailed technical reports on window conditions

How does the maintenance process work?

  1. Submit a request via website, email, or WhatsApp
  2. Contact with the client and proposal of a convenient date
  3. On-site visit and inspection (the cost may be deducted if the work is carried out)
  4. Approval of the estimate and timeline
  5. Completion of work within 1–3 business days
  6. Handover of the service report, photo documentation (if needed), and recommendations

How quickly do you respond to inquiries?

We respond to all inquiries within one business day

(Monday to Saturday, from 08:00 to 18:00).

Do you work on weekends or handle urgent calls?

At the moment, we operate only during regular hours.

Urgent visits are possible by arrangement, depending on availability.

Which regions do you cover?

We serve clients within a 100 km radius of Nordhorn, including:

Germany:

Nordhorn, Osnabrück, Münster, Lingen, Meppen, Rheine, and more.

Netherlands:

Enschede, Hengelo, Almelo, Emmen, Doetinchem, and more.

For B2B clients and large-scale projects, we can travel beyond this area by agreement.

How can I pay for the services?

For B2B clients:

• Bank transfer upon invoice
• Payment term: 7 days
• Custom terms available by contract

For B2C clients:

• Bank transfer (on-site or within 1–2 days)
• Card payment via terminal (Visa, MasterCard, EC-Karte)
• Partial prepayment required when ordering materials

Minimum order amount: €150

Do you offer a warranty on your work?

Yes, we provide a 1-year warranty on all completed work and materials used.

If any issues arise during the warranty period, we’ll come and fix them free of charge.

What does the energy audit include?

After the inspection, you receive a PDF report containing:

• Key observations
• Photos (if necessary)
• Heat loss assessment
• Recommendations for improving energy efficiency

❗️ Please note: This is not an official certified audit according to DIN or BAFA standards, unless specifically agreed otherwise.

Who do you collaborate with?

We’re open to partnerships with:

• Property management companies
• Architectural and design firms
• Construction companies
• Suppliers and manufacturers of window systems

If you're interested in working together — feel free to contact us.