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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint747,212 companies indexed · Last updated: today
DirectoryCrafts & TradesHeating installerOstermundigenHAP Haustechnik GmbH
HAP Haustechnik GmbH Logo
Verified· 3 sourcesTrust Score
Summary

About the company

HAP Haustechnik GmbH plans, installs and maintains heating and plumbing systems as well as photovoltaic and solar thermal systems. Its services include heat pumps, heating and bathroom renovations, repairs, and pressure maintenance systems for heating and cooling installations.

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Service area

Offering

Products & services

Industry:Heating installer
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3.8/5

HAP Haustechnik GmbH

Plumber
Photovoltaics
✓ Offered4
Heating systems
Advisory, planning, installation and maintenance of modern heating solutions for homes and businesses, including heat pumps, gas and oil heating, hybrid heating systems and renewable heating systems.
Sanitary installations
Planning, installation and maintenance of sanitary facilities, including bathroom and kitchen renovations, toilets, showers, bathtubs, pipework, wastewater, as well as on-call service and repairs.
Solar systems
Planning, installation and maintenance of photovoltaic and solar thermal systems with battery storage, advice on subsidies, as well as monitoring, repairs and service.
Pressure maintenance systems (AIR-SEP®)
Sales, planning, installation, commissioning and maintenance of AIR-SEP® pressure holding stations for heating and cooling systems, including degassing, sludge removal and water treatment.
Trust & reputation

ranQ Trust Score of HAP Haustechnik GmbH: 3.8 out of 5.0

Trust Score3.8/ 5.0

High

x

Data basis 96% · As of November 2026

HAP Haustechnik GmbH scores 56.8 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.73.124%
  • 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.35.310%
  • 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.35.08%
HAP Haustechnik GmbH scores 67.8 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.64.612%
  • 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%
HAP Haustechnik GmbH scores 86.7 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).86.722%
HAP Haustechnik GmbH scores 0.0 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 35.0.04%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

HAP Haustechnik GmbH reaches a ranQ Trust Score of 3.8 out of 5.0 — rated «High». The rating draws, among other things, on 5.0 out of 5 stars from 3 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 3 reviews across all connected sources

Sources
GGoogle53
★TrustpilotSoon
PProvenExpertSoon

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

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Comparisons

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Location

Mitteldorfstrasse 31
3072 Ostermundigen
Opening hours
Mon
08:00 - 18:00
Tue
08:00 - 18:00
Wed
08:00 - 18:00
Thu
08:00 - 18:00
Fri
08:00 - 18:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Limited Liability Company
UID
CHE-268.203.741
Founded
2021 · 5 years
Last commercial register change
December 9, 2021
Employees
1 to 10

Active in 1 of 26 cantons · 1 municipality

  • BEOstermundigen
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.
88.0
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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