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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,888 companies indexed · Last updated: today
DirectoryCrafts & TradesPlumbing & Building ServicesMuri B. BernGrize Heizungen AG
Grize Heizungen AG Logo
Verified· 2 sourcesTrust Score
Summary

About the company

Grize Heizungen AG provides planning, installation and maintenance of heating systems. Services include air- and ground-source heat pumps, replacement of gas or oil boilers, underfloor heating, solar collectors, boiler replacement, and maintenance and repair services with an on-call duty service.

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Products & services

Industry:Plumbing & Building Services
✓ Offered
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4.1/5

Grize Heizungen AG

4
Heating Installation and Replacement
Heating installation for new systems, heating renovations, boiler replacement, replacement of gas or oil heating, district heating connections, and heating distribution modifications.
Heat Pumps and Solar Thermal Systems
Air-to-water heat pumps, ground-source heat pumps, heat pump boilers, solar collectors, and CO2-neutral solar technology for heat generation.
Heating Maintenance and Repair
Heating system maintenance and repair with 24-hour service, on-call service, floor-heating flushing and venting, water top-up, and maintenance contracts.
Radiator and Pump Replacement
Replacement of radiators, replacement of faulty radiator valves with thermostat valves, and replacement of old circulation pumps with energy-efficient models.
Trust & reputation

ranQ Trust Score of Grize Heizungen AG: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

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Data basis 54% · As of October 2026

Without public customer reviews the score stays capped.

Grize Heizungen 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%
Grize Heizungen AG scores 92.3 out of 100 points in the Substance area of the ranQ Trust Score. This area carries 28% of the weighting.
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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%
Grize Heizungen AG 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%
Grize Heizungen AG scores 17.1 out of 100 points in the Visibility area of the ranQ Trust Score. This area carries 8% of the weighting.
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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 35.17.14%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Grize Heizungen 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

Thunstrasse 29
3074 Muri B. Bern
Opening hours
Mon
07:30 - 12:00, 13:00 - 17:00
Tue
07:30 - 12:00, 13:00 - 17:00
Wed
07:30 - 12:00, 13:00 - 17:00
Thu
07:30 - 12:00, 13:00 - 17:00
Fri
07:30 - 12:00, 13:00 - 16:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-108.670.104
Founded
1997 · 29 years
Last commercial register change
June 21, 2018
Employees
21 to 50
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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