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

About the company

The core activity of HESAB AG is the planning, installation, maintenance and servicing of energy-related systems for heat and cold generation, particularly in the field of building technology. This includes consulting, planning, installation, maintenance and servicing of heating systems, alternative systems, process, steam and cooling systems, wood chip and pellet systems, ventilation systems for Minergie buildings, as well as refrigeration systems.

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Products & services

Industry:Plumbing & Building Services
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4.3/5

Hesab AG

Sheet Metal Work
✓ Offered9
Advisory, planning, installation, maintenance and service for heating and energy technology
Advice, planning, installation, maintenance and service for energy systems for heat and cold generation, from small to large projects.
Heating service and maintenance
Service and maintenance of heating systems with regular checks, maintenance contracts, repairs and 24-hour emergency readiness.
Heating installations
Heating installations for new builds and renovations, including complete heating systems and replacement of existing heating systems.
Heat pump solutions
Heat pumps for heat recovery, in particular air-water heat pumps and ground-source solutions for new builds and replacement installations.
Pellet heating systems
Pellet boiler systems and wood chip/pellet systems for renewable heat supply for buildings.
Refrigeration systems and cooling
Refrigeration systems, cooling solutions and systems for process, steam and cooling applications.
Ventilation for Minergie
Ventilation systems for Minergie projects with heat recovery and energy-efficient design.
Heat recovery
Heat recovery as part of energy-efficient heating and ventilation systems.
Alternative heating systems
Alternative heating systems and renewable energy plants for heating supply in existing and new buildings.
Trust & reputation

ranQ Trust Score of Hesab AG: 4.3 out of 5.0

Trust Score4.3/ 5.0

Very high

x

Data basis 96% · As of October 2026

Hesab AG scores 75.4 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.81.624%
  • 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.58.610%
  • 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%
Hesab AG scores 89.3 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.70.07%
Hesab 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%
Hesab AG 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

Hesab AG reaches a ranQ Trust Score of 4.3 out of 5.0 — rated «Very high». The rating draws, among other things, on 5.0 out of 5 stars from 9 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 9 reviews across all connected sources

Sources
GGoogle59
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Location

Dennliweg 35C
4900 Langenthal
Opening hours
Mon
07:15 - 12:00, 13:15 - 17:00
Tue
07:15 - 12:00, 13:15 - 17:00
Wed
07:15 - 12:00, 13:15 - 17:00
Thu
07:15 - 12:00, 13:15 - 17:00
Fri
07:15 - 12:00, 13:15 - 16:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-106.108.783
Founded
1994 · 32 years
Last commercial register change
July 28, 2025
Employees
11 to 20
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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