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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint747,212 companies indexed · Last updated: today
DirectoryCrafts & TradesHeating installerRapperswil Sga2 mayr
a2 mayr Logo
Verified· 2 sourcesTrust Score
Summary

About the company

a2 mayr is a solar and energy technology business. It advises on, plans, installs and services alternative heating systems, including photovoltaic and solar thermal systems, heat pumps and biomass systems.

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Service area

Offering

Products & services

Industry:Heating installerPhotovoltaics
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4.1/5

a2 mayr

✓ Offered3
Advisory and planning of solar installations and alternative heating systems
Advisory, planning and selection of suitable systems for solar installations, photovoltaic and solar thermal collector systems, heat pumps and biomass plants.
Installation of solar installations and alternative heating systems
Installation of solar installations, photovoltaic and solar thermal collector systems, as well as heat pumps and biomass plants, as an end-to-end service from a single source.
Service and maintenance of solar installations and alternative heating systems
Service for solar installations, photovoltaic and solar thermal collector systems, as well as heat pumps and biomass plants.
Trust & reputation

ranQ Trust Score of a2 mayr: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 54% · As of November 2026

Without public customer reviews the score stays capped.

a2 mayr 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.
x
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%
a2 mayr scores 78.5 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%
a2 mayr scores 85.0 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).85.022%
a2 mayr scores 14.3 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 35.14.34%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

a2 mayr 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 November 2026.

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

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Location

Fischmarktstrasse 16
8640 Rapperswil Sg

At a glance

Legal form
Sole proprietorship
UID
CHE-111.958.913
Founded
2004 · 22 years
Last commercial register change
July 11, 2007
Employees
1 to 10

Active in 1 of 26 cantons · 1 municipality

  • SGRapperswil-Jona
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.
67.0
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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