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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,937 companies indexed · Last updated: today
DirectoryCrafts & TradesSpecialized Construction InstallationsPrattelnDL Lüftungen GmbH
DL Lüftungen GmbH Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of DL Lüftungen GmbH is the development, installation and maintenance of ventilation systems for residential, commercial and industrial environments, including the provision of products such as exhaust fans and air conditioning systems, with a focus on energy efficiency, quality and customer service.

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Offering

Products & services

Industry:Specialized Construction Installations
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3.8/5

DL Lüftungen GmbH

✓ Offered8
Ventilation services
Ventilation solutions for commercial, industrial and residential buildings; system design, installation and maintenance of ventilation systems.
Heating service
Heating solutions for residential, commercial and industrial buildings; installation, repair and maintenance of heating systems, boilers, heat pumps and underfloor heating.
Air conditioning service
Installation, repair and maintenance of air conditioning systems for residential, commercial and industrial buildings.
Energy efficiency consulting
Energy-efficient solutions for heating and ventilation needs; analysis of improvement opportunities and reduction of energy consumption.
System upgrades for ventilation and heating systems
Upgrades to existing ventilation and heating systems to improve efficiency and performance; identification of upgrade needs and implementation of suitable solutions.
Custom planning
Tailored design solutions for ventilation and heating requirements; development of suitable concepts based on the building’s specific needs.
Maintenance of ventilation and heating systems
Regular maintenance to ensure optimal operation of ventilation and heating systems and to prevent costly repairs.
Green solutions
Environment-oriented solutions to reduce the CO2 footprint through improved energy efficiency in the heating and ventilation sector.
Trust & reputation

ranQ Trust Score of DL Lüftungen GmbH: 3.8 out of 5.0

Trust Score3.8/ 5.0

High

x

Data basis 96% · As of October 2026

DL Lüftungen GmbH scores 59.9 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.68.224%
  • 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.17.610%
  • 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.88.08%
DL Lüftungen GmbH scores 70.2 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.70.212%
  • 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%
DL Lüftungen GmbH 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%
DL Lüftungen 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

DL Lüftungen 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 1 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 1 reviews across all connected sources

Sources
GGoogle51
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Comparisons

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Location

Gehrenackerstrasse 13
4133 Pratteln
Opening hours
Mon
07:00 - 18:00
Tue
07:00 - 18:00
Wed
07:00 - 18:00
Thu
07:00 - 18:00
Fri
07:00 - 18:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Limited Liability Company
UID
CHE-435.807.749
Founded
2020 · 6 years
Last commercial register change
July 12, 2024
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.
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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