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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint746,952 companies indexed · Last updated: today
DirectoryCrafts & TradesPlumberLausenLanz + Stilli AG
Lanz + Stilli AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

Lanz + Stilli AG services and maintains heating systems and installs, renovates and replaces heating systems. Its services include heat pumps, boilers, underfloor heating and district heating connections.

AI-generated
Presence

Service area

Offering

Products & services

Industry:Plumber
✓ Offered8
Heat pump
Planning, installation and examples for heat pump solutions; also pool heat pumps as a separate section on the website.
Oil heating refurbishment
Refurbishment of oil heating systems, including modernisation of existing installations and reference to oil condensing boilers.
Gas heating refurbishment
Refurbishment of gas heating systems, with modernisation of existing installations and adaptation to new requirements.
Maintenance / inspection
Maintenance and inspection of existing heating systems; includes boiler service, burner service and boiler service.
Burner replacement
Replacement of burners on existing heating systems, in particular as an option to extend service life.
Hot-water boiler
Services related to hot-water boilers, including replacement with heat pump boilers as well as cleaning and descaling.
Underfloor heating
Installation and modernisation of underfloor heating as well as maintenance, flushing, repair and troubleshooting.
District heating
Connection to district heating, installation of the heat transfer station, and conversion and integration of existing heating systems.
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3.9/5

Lanz + Stilli AG

Trust & reputation

ranQ Trust Score of Lanz + Stilli AG: 3.9 out of 5.0

Trust Score3.9/ 5.0

High

x

Data basis 96% · As of November 2026

Lanz + Stilli AG scores 54.6 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.30.224%
  • 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.80.810%
  • 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%
Lanz + Stilli 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%
Lanz + Stilli AG scores 86.7 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).86.722%
Lanz + Stilli AG scores 4.9 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 35.4.94%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Lanz + Stilli AG reaches a ranQ Trust Score of 3.9 out of 5.0 — rated «High». The rating draws, among other things, on 3.3 out of 5 stars from 23 customer reviews. The data basis is 96%, so the score is backed by part of the criteria. As of November 2026.

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

Reviews

Aggregated rating

Aggregated rating
3.3
of 5

Aggregated from 23 reviews across all connected sources

Sources
GGoogle3.323
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Comparisons

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Location

Dellenbodenweg 2
4415 Lausen
Opening hours
Mon
07:30 - 12:00, 13:30 - 17:00
Tue
07:30 - 12:00, 13:30 - 17:00
Wed
07:30 - 12:00, 13:30 - 17:00
Thu
07:30 - 12:00, 13:30 - 17:00
Fri
07:30 - 12:00, 13:30 - 16:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-106.159.119
Founded
1989 · 37 years
Last commercial register change
June 28, 2019
Employees
1 to 10

Active in 1 of 26 cantons · 1 municipality

  • BLLausen
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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