ranQ
ranQ
ranQ
DirectoryIndustriesPlacesKnowledgeComparisonsSoon
Sign inCheck visibility
ranQHSG Startup LabelRecognised by the
HSG Startup Label

The leading AI company directory, built to boost AI visibility.

DEENFRIT
Product
  • Pricing
  • Directory
  • Industries
  • Trust Score
Company
  • About
  • Contact
  • Legal
© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryCrafts & TradesPlumbing & Building ServicesBiel/BienneUlmann Heizungen
Ulmann Heizungen Logo
Verified· 3 sourcesTrust Score
Summary

About the company

Ulmann Heizungen is a specialist provider for oil and gas burners and heating systems, offering sales, installation, maintenance and repair services. Its products and services include heat pumps, solar systems, mobile heating units, underfloor heating retrofit using milling technology and app-controllable control solutions.

AI-generated
Offering

Products & services

Industry:Plumbing & Building Services
✓ Offered6
Heating systems
Heating systems for new builds and conversions, repairs and maintenance; advice, planning and implementation of tailor-made heating solutions for oil, gas and heat pump systems.
Heat pumps
Heat pumps for sales and installation; air/water heat pumps, systems with remote control via app, along with suitable control solutions and equipment selection according to customer requirements.
Mobile heating units
Mobile heating units with 70 and 140 kW for drying subfloors or as emergency heating for single-family houses up to multi-family buildings.
Retrofitting underfloor heating
Retrofitting underfloor heating with milling-in technology; without removing the existing subfloor, without drying time and with subsequent installation of the new floor covering.
Service and maintenance
Service, maintenance and rapid troubleshooting for heating systems; installation, servicing and repair of gas and oil boilers, as well as support with problems.
Fired heating systems
Fired heating systems from a single source, planned and implemented in coordination; selection, advice and support for heating systems tailored to individual needs.
LeadhubOutbound Leads by COHAGA

Looking for direct email addresses and phone numbers?

Leadhub delivers verified contact details and decision-makers from over 750,000 Swiss companies — management, procurement, marketing, HR.

Discover Leadhub
4.0/5

Ulmann Heizungen

Trust & reputation

ranQ Trust Score of Ulmann Heizungen: 4.0 out of 5.0

Trust Score4.0/ 5.0

High

x

Data basis 96% · As of October 2026

Ulmann Heizungen scores 62.1 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.75.024%
  • 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.40.910%
  • 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.50.08%
Ulmann Heizungen 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%
Ulmann Heizungen 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%
Ulmann Heizungen scores 25.7 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 35.25.74%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Ulmann Heizungen reaches a ranQ Trust Score of 4.0 out of 5.0 — rated «High». The rating draws, among other things, on 5.0 out of 5 stars from 4 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
5
of 5

Aggregated from 4 reviews across all connected sources

Sources
GGoogle54
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

No knowledge articles yet

Once Ulmann Heizungen has claimed this profile, we'll publish editorial articles and case studies here together.

Get started
Comparisons

Ulmann Heizungen in comparison

Soon

Industry comparisons are coming soon

We're preparing industry comparisons that rank Ulmann Heizungen by reviews, experience and specialisations.

Is this your company?

Claim the company profile of Ulmann Heizungen to make its contact details visible. With a plan we additionally create and publish industry comparisons, articles and much more.

Secure profile

Location

Jakob-Stämpfli-Strasse 103
2502 Biel/Bienne
Opening hours
Mon
07:30 - 12:00, 13:30 - 18:00
Tue
07:30 - 12:00, 13:30 - 18:00
Wed
07:30 - 12:00, 13:30 - 18:00
Thu
07:30 - 12:00, 13:30 - 18:00
Fri
07:30 - 12:00, 13:30 - 18:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Sole proprietorship
UID
CHE-109.522.989
Founded
2001 · 25 years
Last commercial register change
December 3, 2019
Employees
1 to 10
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

    Similar companies

    HW
    Heiztechnik Widmer AG
    Langnau Im Emmental
    HB
    Haustechnik Bammann
    Schwarzhäusern
    AH
    AGA Haustechnik + Planung GmbH
    Oberhofen Am Thunersee
    UR
    Urs Roth & Co. AG
    Bern
    MH
    Marolf Haustechnik AG
    Erlach
    KB
    Käser Bau und Haustechnik
    Gwatt (Thun)
    H&
    Huber & Küng Gebäudevisionäre GmbH
    Lyssach
    SW
    Samuel Wyssen
    Roggwil Be