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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,887 companies indexed · Last updated: today
DirectoryCrafts & TradesPlumbing & Building ServicesSchwarzenbach SgAqua - Therm Haustechnik GmbH
Aqua - Therm Haustechnik GmbH Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of Aqua-Therm Haustechnik GmbH is the execution of heating systems of all kinds as well as the execution of sanitary facilities, including boiler renovations, bathroom conversions, installation of heat pumps, solar systems, water softening systems and water treatment systems. The company also offers a 24-hour emergency service.

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Products & services

Industry:Plumbing & Building Services
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4.3/5

Aqua - Therm Haustechnik GmbH

4
Heating
Heating systems for new builds, conversions and repairs; oil and gas boiler refurbishment, heat pumps, solar systems, wood heating and combinations of several heating types.
Sanitary installations
Sanitary facilities for new builds, conversions and repairs; sanitary installations in the house, descaling systems, water treatment systems and 24h service for emergencies.
Bathroom renovation
Bathroom renovation from one source with expert advice, on-site measurements, 3-D planning, appointment scheduling, coordination of the tradespeople and professional installation.
24h emergency service
24h on-call duty for help in emergencies, including rapid support with problems on heating and sanitary installations.
Trust & reputation

ranQ Trust Score of Aqua - Therm Haustechnik GmbH: 4.3 out of 5.0

Trust Score4.3/ 5.0

Very high

x

Data basis 96% · As of October 2026

Aqua - Therm Haustechnik GmbH scores 84.0 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.82.224%
  • 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.79.710%
  • 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%
Aqua - Therm Haustechnik GmbH scores 80.9 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.95.212%
  • 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.55.07%
Aqua - Therm Haustechnik GmbH 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%
Aqua - Therm Haustechnik GmbH scores 28.6 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 35.28.64%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Aqua - Therm Haustechnik GmbH reaches a ranQ Trust Score of 4.3 out of 5.0 — rated «Very high». The rating draws, among other things, on 4.8 out of 5 stars from 22 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
4.8
of 5

Aggregated from 22 reviews across all connected sources

Sources
GGoogle4.822
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Apollostrasse 2
9536 Schwarzenbach Sg
Opening hours
Mon
07:00 - 18:00
Tue
07:00 - 18:00
Wed
07:00 - 18:00
Thu
07:00 - 18:00
Fri
07:00 - 18:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Limited Liability Company
UID
CHE-479.529.656
Founded
2013 · 13 years
Last commercial register change
February 17, 2015
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.
88.0
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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