JF
Jihad Falfoul
1 May 2025
"Je recommande fortement! Pose des fenêtres impeccable et garantie. Les employés sont respectueux et font attention au moindre détails. Petite mention au nettoyage après le service. Des vrais pro !"
- Free quotation
- Installation in 3–5 weeks
- 10-year manufacturer warranty
- Direct factory pricing
4.9
Google rating ⭐⭐⭐⭐⭐
500+
Projects completed
10 yr
Manufacturer warranty
No. 1
Salamander manufacturer CH
What Sets Us Apart
Direct Factory Sales
No middleman. You buy directly from the manufacturer – meaning better prices and direct contact with the people who build your windows.
30+ Years of Experience
Since 1996, we have been manufacturing high-quality windows and doors for private homes, residential developments, and commercial properties throughout Switzerland.
Full Quality Control
From raw material procurement to installation – every step is controlled in-house. No outsourcing, no quality compromises.
U-Wert ≤ 1.0 W/(m²K)
Wärmedämmung
RC2 / RC3 Sicherheit
Einbruchschutz
Salamander® Zertifiziert
Nr. 1 Schweiz
Our Products
Tailored solutions for every need – from the classic family home to architecturally demanding commercial buildings.
Flaggschiff
Windows
Precision & thermal insulation to Swiss standards
Discover Product
Entrance Doors
Security meets elegant design
Discover Product
Lift-Sliding Doors
Boundless transition between inside and outside
Discover Product
Conservatories
Live year-round in harmony with nature
Discover Product
Glass Railing Systems
Modern safety with unobstructed views
Discover Product
Glass Facade Systems
Architectural perfection for demanding projects
Discover ProductEnergy efficiency
Energy savings start with your windows
Eni Windows AG windows reduce your heat loss by up to 70% compared to old single glazing — significantly lowering your heating bills.
- U-value ≤ 0.7 W/(m²K) with triple glazing
- Meets Minergie® and CECB requirements
- Free on-site energy consultation included
U-value comparison (W/m²K)
0.7
Eni Windows — Triple glazing
1.0
Eni Windows — Standard
1.1
Market standard
1.5+
Old single glazing
Swiss standards
SIA 180
EN 14351-1
Minergie®
SN 565 340
Heating cost savings
up to –40%
Compared to old single glazing, depending on property
More light.
Less noise.
No draughts.
Swiss windows
RC2 Burglar Resistance
Safety for your
family.
Your family deserves the best protection. Our windows and doors are certified to resistance class RC2 — 3 minutes of resistance to break-in attempts with lever tools. Standard across all our products.
Certified Resistance Class RC2
Tested to DIN EN 1627 – withstands lever attacks for over 3 minutes
Trusted by over 500 families in the Biel–Bern region
Configure nowRC2 Resistance Class
Certified burglar protection to DIN EN 1627. Withstands lever tools for at least 3 minutes.
Multi-point locking
5-point locking secures the frame at multiple points simultaneously — no lever attack possible.
Safety glass P4A
Laminated safety glass stays in place after breakage, protecting against intrusion.
Swiss test certificate
All RC2/RC3 products are tested and certified by accredited testing institutes.
Our hardware system
Siegenia Titan — Security you can feel
Every Eni Windows AG window comes standard with the Siegenia Titan hardware system. This proven system combines maximum burglar resistance with precise, effortless operation — designed to last for decades.
01
Multi-point locking up to RC3
The Siegenia Titan system secures your window at multiple points simultaneously — frame, bolts and pins interlock precisely. Certified to EN 1627 for security classes RC2 and RC3.
02
Effortless daily comfort
Thanks to the optimised switching mechanism, windows open, tilt and close with minimal effort. Tested to over 100,000 operating cycles without any loss of performance.
03
Universal compatibility
The Titan system is compatible with PVC, aluminium and timber-aluminium profiles. Every Eni window — whatever the profile — comes with first-class hardware technology.
04
Long-term reliability
All Siegenia Titan hardware is made from high-quality electro-galvanised steel and corrosion-resistant to EN 1670 class 4 — no deterioration from weather or salt air.
Schematic view of locking points
Our glazing partner
Glaströsch Glazing — Warmth in, cold out
As a long-standing partner of Glaströsch, Eni Windows AG uses only certified Swiss quality glass. From UV protection coating to triple-glazed passive house windows — every unit is made to measure.
UV protection & light comfort
Special UV protection coatings on Glaströsch glass reflect up to 98% of harmful UV radiation — without restricting visibility. Your furniture, floors and fabrics retain their colour long-term. At the same time, natural daylight is optimally guided into the room.
Thermal performance — what do the numbers mean?
The Ug value describes how much heat a pane of glass loses per second. The smaller the value, the better the insulation.
A window with Ug 0.7 W/m²K loses 60% less heat than a conventional double-glazed window (Ug 1.1). For an average facade area of 12 m² of glass, this equates to a heating cost saving of CHF 150–250 per heating season.
| Glazing | Ug value | Sound insulation | UV protection | Recommendation |
|---|---|---|---|---|
| Standard double glazing | 1.0–1.1 W/m²K | 30 dB | 50% | Renovation with minimum requirements |
| Triple glazing Comfort | 0.7–0.8 W/m²K | 38 dB | 70% | New build and energy renovation |
| Triple glazing Premium | 0.5–0.6 W/m²K | 42 dB | 85% | Passive house and Minergie |
| Acoustic glass | 1.0 W/m²K | 52 dB | 60% | Roadside and high-noise areas |
All Glaströsch units are certified to SN EN 1279 and installed at our production facility in Orpund.
Request quote with glazingEni Windows AG
Why Eni Windows AG?
We produce what we sell – with full commitment.
Direct from the factory
No middleman. You buy directly from the manufacturer – meaning better prices, full transparency and direct contact with the people who build your windows.
Energy efficiency & glazing
Triple glazing with Glaströsch quality glass and Uw values down to 0.8 W/m²K. Your heating costs drop, your comfort rises – noticeable from day one.
Siegenia Titan security
Our windows come standard with the Siegenia Titan hardware system – multi-point locking, burglar-resistant and built to last for decades.
Swiss Quality – 30 years experience
Since 1996, we have produced in Orpund to Swiss standards. As Switzerland's #1 certified Salamander fabricator, every window stands for uncompromising quality control.
30+
years experience
- Over 30 years of experience in production and installation
- Direct factory sales – no middleman
- #1 certified Salamander manufacturer in Switzerland
- Self-financed and fully independent
Our References
Projects we are proud of – from single-family homes to office buildings.
2023
Single Family Home Biel
Biel/Bienne, BE
Windows & Entrance Door
Complete renovation of a single-family home with 14 window units and a representative entrance door.
2023
Office Building Bern
Bern, BE
Glass Facade System
Post-and-rail facade for a modern office building in the city of Bern. 450 m² glass facade, triple glazed.
2022
Apartment Building Orpund
Orpund, BE
Lift-Sliding Doors & Windows
12 apartments each fitted with a flush-to-floor lift-sliding door and new windows.
Google Reviews
What our customers say
4.9
48 reviews · Google
TT
Tigana Tigana
1 June 2025
"Je recommande vivement ENI Windows. L'équipe a été très professionnelle, ponctuelle et engagée du début à la fin. Les travaux ont été réalisés dans les délais avec un excellent souci du détail. Je suis très satisfait du résultat et n'hésiterais pas à faire appel à leurs services à nouveau. Merci à toute l'équipe !"
SA
Senjur Avdulahu
10 June 2025
"J'ai mandaté ENI Windows pour poser un film sur mes vitres et je suis très satisfait du résultat. Le travail a été réalisé rapidement, avec soin et professionnalisme. La pose est impeccable et le rendu est excellent. Je recommande cette entreprise pour la qualité de son travail et son efficacité."
Nouveau
BB
Burim Bujari
15 March 2025
"Production très moderne en Suisse. Processus extrêmement structuré, de la première rencontre avec le client sur site jusqu'à la finalisation du projet."
SK
Sammie Keller
10 June 2025
"Entreprise compétente et réactive ! Je recommande à 100%"
Local Guide
JF
Jihad Falfoul
1 May 2025
"Je recommande fortement! Pose des fenêtres impeccable et garantie. Les employés sont respectueux et font attention au moindre détails. Petite mention au nettoyage après le service. Des vrais pro !"
TT
Tigana Tigana
1 June 2025
"Je recommande vivement ENI Windows. L'équipe a été très professionnelle, ponctuelle et engagée du début à la fin. Les travaux ont été réalisés dans les délais avec un excellent souci du détail. Je suis très satisfait du résultat et n'hésiterais pas à faire appel à leurs services à nouveau. Merci à toute l'équipe !"
SA
Senjur Avdulahu
10 June 2025
"J'ai mandaté ENI Windows pour poser un film sur mes vitres et je suis très satisfait du résultat. Le travail a été réalisé rapidement, avec soin et professionnalisme. La pose est impeccable et le rendu est excellent. Je recommande cette entreprise pour la qualité de son travail et son efficacité."
Nouveau
BB
Burim Bujari
15 March 2025
"Production très moderne en Suisse. Processus extrêmement structuré, de la première rencontre avec le client sur site jusqu'à la finalisation du projet."
SK
Sammie Keller
10 June 2025
"Entreprise compétente et réactive ! Je recommande à 100%"
Local Guide
Your Path to New Windows
Simple, transparent, and professional – to your new windows in three steps.
Contact & Consultation
Get in touch with us – by phone, email, or via our contact form. We advise you free of charge and without obligation on your project.
Free Measurement
Our specialist team visits you and precisely measures all openings. This ensures every element fits perfectly.
Production & Installation
We manufacture your windows and doors in our factory in Orpund and carefully install them with our own team.
For professionals
Architects & General Contractors
Reliable production partner for residential developments, commercial buildings and renovation projects. Precision-made, on schedule, and scalable.
Request a professional quoteWe respond within 24 hours
High-volume capacity
Production of 10 to 500+ units from one factory — consistent quality, plannable delivery windows.
CAD & Technical documents
Dimensioned drawings, DXF files and product data sheets for your execution planning, on request.
Project support
Dedicated contact from initial consultation to final acceptance — including coordination with GC.
Preferential pricing
Special rates for framework contracts and repeat orders. Progress billing available.
Frequently Asked Questions
Everything you want to know about our products and services
Production time is typically 4–6 weeks. After that, an installation date is arranged to suit your schedule. For large projects, we are happy to create an individual project plan.
Yes, we offer free on-site measurements and consultations. Our specialist staff will visit you and advise on the optimal solutions for your property.
We provide a statutory warranty of 2 years plus a manufacturer's guarantee of 10 years on profile systems and 5 years on hardware – well above the market average.
Yes. Since we are both manufacturer and retailer, middleman margins are completely eliminated. You get premium quality at significantly lower prices than specialist retailers.
RC2 (Resistance Class 2) protects against burglary attempts of at least 3 minutes with simple tools. RC3 increases protection to 5 minutes with lever tools. We recommend RC2 or RC3 for all entry areas.
Yes, we operate throughout Switzerland – from Biel/Bienne and Bern to Geneva and Zurich. Contact us for a no-obligation quote in your region.
Unsere Partnerunternehmen
Our subsidiary
ENI Vitrage — Glass repair & emergency glazing
Broken glass? Condensation between panes? ENI Vitrage is our subsidiary specialised in glazing work. We offer rapid emergency response, insulating glass replacement, glass balustrades and mirror repair — across Switzerland.
- 24/7 emergency response
- Insulating glass replacement
- Balustrades & mirrors
- Certified glaziers
or call us
Ready for Your New Windows?
Request your free quote now. We will respond within 24 hours.
Kontaktinformationen
Adresse
Lerchenweg 22552 Orpund
Öffnungszeiten
Mo–Fr 08:00–17:00
Sa 08:00–12:00
Geschlossen