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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryCrafts & TradesPlumbing & Building ServicesKlosters DorfM. Kunz AG
M. Kunz AG Logo
Verified· 4 sourcesTrust Score
Summary

About the company

M. Kunz AG is a building services company that provides planning, installation and maintenance of heating, ventilation and air‑conditioning (HVAC) and sanitary systems. Services include heating systems and renovations, heat pumps, wood‑fired systems, boiler maintenance, bathroom fittings and a 24‑hour emergency service.

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Products & services

Industry:Plumbing & Building Services
✓ Offered4
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4.5/5

M. Kunz AG

Heating installations
Heating renovations and new installations, heat pumps, wood-fired systems, district-heating connections, gas/biogas heating, oil heating, plus radiators, underfloor heating and domestic hot-water systems.
Ventilation and air-conditioning technology
Comfort ventilation, controlled residential ventilation, ventilation systems, air-conditioning systems, heat recovery, kitchen and bathroom extraction, plus industrial and catering installations.
Plumbing installations
Bathroom and kitchen renovations, wellness installations, water and wastewater systems, gas installations, compressed-air systems, water treatment, water softening and leak-warning systems.
Service and maintenance
24-hour on-call service, repairs and maintenance, boiler servicing, descaling, pipe cleaning, filter changes, plus service subscriptions and scheduled maintenance.
Trust & reputation

ranQ Trust Score of M. Kunz AG: 4.5 out of 5.0

Trust Score4.5/ 5.0

Excellent

x

Data basis 100% · As of October 2026

M. Kunz AG scores 95.8 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.94.424%
  • 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.95.08%
M. Kunz AG scores 90.9 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%
M. Kunz 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%
M. Kunz AG scores 24.3 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 35.48.64%
  • Media authority: Quality and number of editorial mentions, weighted by the importance of the source, plus the recency of the latest high-quality mention.0.04%
Qualifications+0.00

M. Kunz 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 52 customer reviews. 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 52 reviews across all connected sources

Sources
GGoogle552
★TrustpilotSoon
PProvenExpertSoon

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

Press

Media

February 6, 2022Media
Wechsel in der Geschäftsführung der M. Kunz AG | Klosters - Saas i.P. - Serneus
vilan24.ch

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Location

Landstrasse 44
7252 Klosters Dorf
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-105.768.020
Founded
1989 · 37 years
Last commercial register change
July 4, 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.85.03%
    • Full methodology

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