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

About the company

Bill + Künzi AG plans and installs heating and plumbing systems for new buildings and renovations. Its services include heat pumps and other heating systems, plumbing installations, and maintenance and repair work.

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Service area

Offering

Products & services

Industry:PlumberPhotovoltaics
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Bill + Künzi AG

✓ Offered4
Heat pumps
Heat pumps for new builds and renovations, with advice, planning, installation and service; ground-, air- and water-heat pumps as well as solutions for renewable heating.
Heating systems
Heating projects for new builds and renovations, including advice, planning and implementation; renewable heating, pellet boilers, gas heating systems, oil heating systems, and heat distribution with radiators and underfloor heating.
Plumbing
Sanitary installations and upgrades for kitchens and bathrooms in residential and commercial settings; rainwater use, water treatment and individual consultation on site.
Maintenance service
Maintenance, repairs and service for heating and plumbing systems; tap repairs, descaling boilers, topping up and bleeding the heating system, flushing pipes, home-technology check and solar system check.
Trust & reputation

ranQ Trust Score of Bill + Künzi AG: 4.5 out of 5.0

Trust Score4.5/ 5.0

Excellent

x

Data basis 96% · As of November 2026

Bill + Künzi AG scores 84.7 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.89.124%
  • 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.78.08%
Bill + Künzi 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%
Bill + Künzi 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%
Bill + Künzi AG scores 25.7 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 35.25.74%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Bill + Künzi AG reaches a ranQ Trust Score of 4.5 out of 5.0 — rated «Excellent». The rating draws, among other things, on 5.0 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 November 2026.

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

Reviews

Aggregated rating

Aggregated rating
5
of 5

Aggregated from 22 reviews across all connected sources

Sources
GGoogle522
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Comparisons

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Location

Sportweg 56
3097 Liebefeld
Opening hours
Mon
07:30 - 12:00, 13:00 - 16:00
Tue
07:30 - 12:00, 13:00 - 16:00
Wed
07:30 - 12:00, 13:00 - 16:00
Thu
07:30 - 12:00, 13:00 - 16:00
Fri
07:30 - 12:00, 13:00 - 15:30
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-108.116.865
Founded
1988 · 38 years
Last commercial register change
January 17, 2024
Employees
21 to 50

Active in 1 of 26 cantons

  • BEBern
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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