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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryCrafts & TradesPlumbing & Building ServicesWaldkirchTh. Inauen AG
Th. Inauen AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of Inauen Heizung is the planning, installation, maintenance and repair of heating systems, including heat pumps, wood heating systems, gas and oil heating systems, comfort ventilation and energy consulting. The company also offers services such as heating system renovation, earth drilling and heat pump servicing.

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Products & services

Industry:Plumbing & Building Services
✓ Offered10
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Th. Inauen AG

Heating system refurbishment
Heating system refurbishment for greater efficiency and climate protection, including planning, implementation, heating system installation, maintenance, grant applications and coordinated modernisation solutions.
Energy consulting
Energy consulting for building, modernising, renewing and refurbishing, including a free initial consultation for single-family (EFH) and multi-family (MFH) homes, GEAK, building modernisation concepts and funding support.
Heat pump heating systems
Heat pump heating systems with ground probes and air-to-water systems for space heating and domestic hot water preparation, including advice, planning and installation.
Bivalent heating system
Bivalent heating systems with two energy sources for domestic hot water and heat generation, to reduce operating costs and use renewable energies.
Wood heating
Wood heating systems with pellet, woodchip or log systems as a CO2-neutral fuel for renewable heat.
Gas and oil heating
Gas and oil heating systems with modern condensing technology, space-saving installations and combinations with solar systems.
Comfort ventilation
Comfort ventilation for continuous fresh air, heat recovery, filtration of dust and pollen, as well as reduced draughts and noise.
Maintenance and repairs
Maintenance and repairs for heating systems, with a 24-hour on-call (piquet) service for emergencies outside business hours.
Heat pump service
Heat pump service for support, service call-outs and assistance related to heat pump systems.
Boiler service
Boiler service for maintenance and service work on boiler systems.
Trust & reputation

ranQ Trust Score of Th. Inauen AG: 4.7 out of 5.0

Trust Score4.7/ 5.0

Excellent

x

Data basis 96% · As of October 2026

Th. Inauen AG scores 98.0 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.96.524%
  • 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.100.010%
  • 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.100.08%
Th. Inauen AG scores 92.3 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.100.012%
  • 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%
Th. Inauen AG scores 85.0 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).85.022%
Th. Inauen AG scores 31.4 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 35.31.44%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Th. Inauen AG reaches a ranQ Trust Score of 4.7 out of 5.0 — rated «Excellent». The rating draws, among other things, on 5.0 out of 5 stars from 89 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
5
of 5

Aggregated from 89 reviews across all connected sources

Sources
GGoogle589
★TrustpilotSoon
PProvenExpertSoon

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

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Comparisons

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Location

Neubrunnstrasse 2a
9205 Waldkirch
Opening hours
Mon
07:00 - 12:00, 13:00 - 17:00
Tue
07:00 - 12:00, 13:00 - 17:00
Wed
07:00 - 12:00, 13:00 - 17:00
Thu
07:00 - 12:00, 13:00 - 17:00
Fri
07:00 - 12:00, 13:00 - 16:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-107.493.992
Founded
1993 · 33 years
Last commercial register change
November 25, 2021
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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