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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryFinance & InsuranceHolding CompaniesLenzburgH. Iseli AG
H. Iseli AG Logo
Verified· 2 sourcesTrust Score
Summary

About the company

H. Iseli AG provides building services in the fields of heating, sanitary installations, solar systems and chimney construction. The company installs, maintains and renovates related systems and also offers emergency service for building technology issues.

AI-generated
Offering

Products & services

Industry:Holding Companies
✓ Offered4
Heating
Heating installation and maintenance, heating systems for new builds and renovation, classic heating systems with oil, gas, wood or heat pumps, underfloor heating and radiators.
Plumbing
Sanitary installations, new installations, bathroom refurbishments, pipework, water softening systems, installation of taps and appliances, boiler descaling as well as repairs and maintenance.
Solar
Solar systems for domestic hot water, heating support and power generation, photovoltaic systems, thermal solar installations, and service and maintenance, including consultation, building submissions, installation and commissioning.
Chimney construction
Fireplaces, flue gas systems and chimney construction with installation, assembly, commissioning and maintenance, including heating chimneys, ventilation chimneys, chimney flues and chimney refurbishments.
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4.1/5

H. Iseli AG

Trust & reputation

ranQ Trust Score of H. Iseli AG: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 54% · As of October 2026

Without public customer reviews the score stays capped.

H. Iseli AG has no value in the Reputation area of the ranQ Trust Score because no data is available. The area carries 42% of the weighting and drops out of the calculation for this profile; it does not lower the score, only the reported data basis.
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CriterionValueWeight
  • Review quality: No data point — the criterion is taken out of the weighting and does not lower the score.—24%
  • Review volume: No data point — the criterion is taken out of the weighting and does not lower the score.—10%
  • Review recency: No data point — the criterion is taken out of the weighting and does not lower the score.—8%
H. Iseli AG scores 85.5 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.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.55.07%
H. Iseli AG scores 83.3 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).83.322%
H. Iseli AG scores 4.3 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 35.4.34%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

H. Iseli AG reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». No public customer reviews are available for this provider; the rating is based on the remaining criteria. The data basis is 54%, 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.

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Location

Zeughausstrasse 46
5600 Lenzburg

At a glance

Legal form
Corporation
UID
CHE-101.044.650
Founded
1998 · 28 years
Last commercial register change
July 3, 2020
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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