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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureInterior ConstructionMüllheim Dorfsmartwindows AG
smartwindows AG Logo
Verified· 4 sourcesTrust Score
Summary

About the company

smartwindows AG is a Swiss developer and manufacturer of window and door systems for renovation and new construction. The company offers PVC and wood (including wood–aluminium) windows, sliding doors, entrance doors and related accessories, and carries out product development and in‑house testing.

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Products & services

Industry:Interior Construction
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4.1/5

smartwindows AG

7
Windows
Windows made of plastic, plastic/aluminium, wood and wood/aluminium for renovation and new build; with options for high security, thermal insulation, sound insulation and individual design.
Sliding doors
Sliding doors for new build and renovation; parallel sliding door PS and lift-and-slide door HST in plastic, plastic/aluminium, wood or wood/aluminium for the terrace, garden or balcony.
Front doors
Front doors for renovation and new build; classic, elegant and representative designs with steel reinforcement, aluminium cladding, free colour design and security options.
Accessories for windows and sliding doors
Accessories for the individual configuration of windows and sliding doors; colour concept, handles, glazing, muntins, concealed fittings, insect protection, cleaning vents and ventilation.
Expertise
Planning, development and testing of window and door systems; consulting on building physics and structural engineering, own test rigs and research for individual solutions.
Production
Production of quality products in three Swiss production plants; manufacturing of windows and doors with Swiss-made, sustainability and energy efficiency.
Consulting for individual window and door solutions
Individual consulting for renovation, modernization and new build; aligning material, design, colour and equipment to the property and requirements.
Trust & reputation

ranQ Trust Score of smartwindows AG: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 100% · As of October 2026

smartwindows AG scores 63.8 out of 100 points in the Reputation area of the ranQ Trust Score. This area carries 42% of the weighting.
x
CriterionValueWeight
  • Review quality: The average rating across all connected sources, smoothed against the industry mean. So 5.0 stars from three reviews do not outrank 4.7 from three hundred.65.024%
  • Review volume: The number of reviews across all sources. The scale is logarithmic: the first reviews count the most, and the maximum is reached at 50 reviews.49.510%
  • Review recency: The age of the most recent review. Two-year-old reviews deliberately sit in the middle, because that is normal for Swiss SMEs. Only after three years without a new voice does the value drop markedly.78.08%
smartwindows AG scores 79.5 out of 100 points in the Substance area of the ranQ Trust Score. This area carries 28% of the weighting.
x
CriterionValueWeight
  • Establishment: Years since founding or brand launch, logarithmic. The maximum is reached at 15 years.70.212%
  • Company size: The headcount band, researched by ranQ or stated by the company. It is scored in steps rather than by head count, because the data only provides bands.82.07%
smartwindows AG scores 86.7 out of 100 points in the Identity area of the ranQ Trust Score. This area carries 22% of the weighting.
x
CriterionValueWeight
  • Verification: Official register entry (commercial register with UID or professional-body record, 55 points), confirmed domain (20 points) and confirmed ranQ profile (up to 25 points, depending on completeness).86.722%
smartwindows AG scores 59.3 out of 100 points in the Visibility area of the ranQ Trust Score. This area carries 8% of the weighting.
x
CriterionValueWeight
  • Website authority: Ahrefs' Domain Rating measures, on a scale of 0 to 100, how strongly a website is linked from other websites. For Swiss SMEs the range up to 40 is typical; the maximum is reached at 35.68.64%
  • Media authority: Quality and number of editorial mentions, weighted by the importance of the source, plus the recency of the latest high-quality mention.50.04%
Qualifications+0.00

smartwindows AG reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». The rating draws, among other things, on 4.3 out of 5 stars from 6 customer reviews. As of October 2026.

The Trust Score cannot be bought and is calculated from publicly verifiable data.

Reviews

Aggregated rating

Aggregated rating
4.3
of 5

Aggregated from 6 reviews across all connected sources

Sources
GGoogle4.36
★TrustpilotSoon
PProvenExpertSoon

Further sources are added continuously and factored into the ranQ Rating.

Press

Media

April 25, 2024Media
Gemeinsam zur ausgezeichneten Nachhaltigkeit
hochparterre.ch
November 30, 2023Media
Smartwindows in Müllheim baut nachhaltige Kunststoff-Fenster
tagblatt.ch
January 29, 2021Media
Smartwindows will nicht jeden Auftrag «auf Teufel komm raus» mitnehmen – Geschäftsführer Briano sagt: «Wir digitalisieren konsequent»
tagblatt.ch
January 28, 2021Media
«Es ist schön, dass eine Tradition weitergeht»: Gemeindepräsident Urs Forster freut sich über die Firmenrettung durch Smartwindows in Müllheim
thurgauerzeitung.ch
January 28, 2021Media
Sitz in Müllheim – Produktion in Mörschwil bleibt erhalten: Swisswindows kehrt als Smartwindows zurück
tagblatt.ch

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Location

Thurstrasse 18
8555 Müllheim Dorf
Opening hours
Mon
07:30 - 12:00, 13:00 - 17:00
Tue
07:30 - 12:00, 13:00 - 17:00
Wed
07:30 - 12:00, 13:00 - 17:00
Thu
07:30 - 12:00, 13:00 - 17:00
Fri
07:30 - 12:00, 13:00 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-338.678.672
Founded
2020 · 6 years
Last commercial register change
November 20, 2023
Employees
21 to 50
Legal form: Graded by liability and disclosure. The weight is kept small: a sole proprietorship is not a dubious company, it is just liable differently.
100.0
6%
  • Branch offices: Branch offices linked in the commercial register. Having none is normal and costs no points.70.03%
    • Full methodology

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