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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryCrafts & TradesPlumbing & Building ServicesZurichHeizen24 AG
Heizen24 AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of Heizen24 AG is the provision of services in the field of building technology, particularly in the installation, maintenance and repair of heating systems, as well as in technical facility management (TFM). The company also offers consulting and planning services for new construction and renovation projects and has a 24-hour emergency service for urgent repairs.

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Offering

Products & services

Industry:Plumbing & Building Services
✓ Offered
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4.3/5

Heizen24 AG

8
Heating, Plumbing, Climate and Ventilation
Planning, installation, maintenance, repair and servicing of heating, plumbing, climate and ventilation systems for business customers in German-speaking Switzerland.
Service and Maintenance
Maintenance contracts, inspections, fault repair, repairs and servicing with qualified service technicians and planned response paths.
24/7 Emergency Service
Round-the-clock fault support for heating, plumbing, climate and ventilation with a two-hour on-site guarantee in the core service area.
Technical Facility Management
Property and plant care, technical HVAC management, maintenance and inspection plans, contractor coordination, documentation and reporting.
Hybrid IoT for Building Technology
Sensor technology, real-time monitoring, digital building management and predictive maintenance with analysis of temperature, consumption and pressure.
Equipment Rental Service
Rental of mobile heaters, construction dryers, drum fans, mobile air conditioners and degassing systems, with delivery and commissioning on request.
Legionella Testing
Drinking-water testing with rapid and detailed tests, including sample collection, pickup within a 20-kilometre radius and documentation.
Online Repair Order
Repair requests submitted online for heating, hot water, plumbing and climate or ventilation faults, with prompt follow-up.
Trust & reputation

ranQ Trust Score of Heizen24 AG: 4.3 out of 5.0

Trust Score4.3/ 5.0

Very high

x

Data basis 96% · As of October 2026

Heizen24 AG scores 76.4 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.71.024%
  • 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.70.510%
  • 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.100.08%
Heizen24 AG scores 89.3 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.70.07%
Heizen24 AG scores 85.0 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).85.022%
Heizen24 AG scores 1.4 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 35.1.44%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Heizen24 AG reaches a ranQ Trust Score of 4.3 out of 5.0 — rated «Very high». The rating draws, among other things, on 4.5 out of 5 stars from 15 customer reviews. The data basis is 96%, 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.

Reviews

Aggregated rating

Aggregated rating
4.5
of 5

Aggregated from 15 reviews across all connected sources

Sources
GGoogle4.515
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Comparisons

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Location

Flüelastrasse 27
8047 Zurich
Opening hours
Mon
08:00 - 17:30
Tue
08:00 - 17:30
Wed
08:00 - 17:30
Thu
08:00 - 17:30
Fri
08:00 - 17:30
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-115.101.113
Founded
2009 · 17 years
Last commercial register change
January 8, 2024
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.70.03%
    • Full methodology

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