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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,937 companies indexed · Last updated: today
DirectoryCrafts & TradesSpecialized Construction InstallationsHunzenschwilESTA Swiss AG
ESTA Swiss AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The company ESTA Swiss AG specializes in the development, manufacture and distribution of ventilation and heat exchanger systems for use in buildings. The core activities include the production of: layered storage systems for heat and cold storage, roof ventilation boxes for building ventilation, apartment ventilation boxes for apartment ventilation, and spiral ribbed tubes for heat transfer and transmission. The company also offers individual solutions for special installation situations and applications, such as facade heating, high-bay warehouses, greenhouses and glass domes.

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Products & services

Industry:Specialized Construction Installations
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3.8/5

ESTA Swiss AG

✓ Offered4
Stratified storage tank
Cubic stratified storage tanks for heat and cold storage, individually designed with different heat exchangers; models 5K and 200K, suitable for domestic hot-water production and other heat sources.
Roof ventilation box
Roof-integrated ventilation unit for controlled apartment ventilation with models DB 600, 1'200 and 2'000; roof mounting, integrated control, connectable to up to 18 apartments.
Apartment ventilation box
Compact apartment ventilation boxes as either recessed or surface-mounted solutions, with integrated sound attenuation, prewired controls and optional VOC sensor for supply and extract air.
Spiral-rib pipe
Round radiators with spiral-rib pipe, variable lengths and diameters, selectable connections and different designs for special installation conditions.
Trust & reputation

ranQ Trust Score of ESTA Swiss AG: 3.8 out of 5.0

Trust Score3.8/ 5.0

High

x

Data basis 96% · As of October 2026

ESTA Swiss AG scores 50.4 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.41.924%
  • 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.35.310%
  • 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.95.08%
ESTA Swiss AG scores 82.3 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.92.512%
  • 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.55.07%
ESTA Swiss AG scores 85.0 out of 100 points in the Identity area of the ranQ Trust Score. This area carries 22% of the weighting.
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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).85.022%
ESTA Swiss AG scores 8.3 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 35.8.34%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

ESTA Swiss AG reaches a ranQ Trust Score of 3.8 out of 5.0 — rated «High». The rating draws, among other things, on 2.3 out of 5 stars from 3 customer reviews. The data basis is 96%, so the score is backed by part of the criteria. As of October 2026.

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

Reviews

Aggregated rating

Aggregated rating
2.3
of 5

Aggregated from 3 reviews across all connected sources

Sources
GGoogle2.33
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Fabrikweg 1
5502 Hunzenschwil
Opening hours
Mon
07:30 - 11:30, 13:30 - 17:00
Tue
07:30 - 11:30, 13:30 - 17:00
Wed
07:30 - 11:30, 13:30 - 17:00
Thu
07:30 - 11:30, 13:30 - 17:00
Fri
07:30 - 11:30, 13:30 - 16:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-353.533.555
Founded
2014 · 12 years
Last commercial register change
August 2, 2024
Employees
1 to 10
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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