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

About the company

The core activity of Conversioplan GmbH is the planning and consulting of HLKS systems (heating, ventilation, air conditioning, sanitation) for buildings. This includes, in particular, the specialized planning of refrigeration systems, heating systems, ventilation systems, and sanitary installations, as well as specialized construction management and owner representation. The company offers its customers tailored solutions for new buildings, expansions, and renovations, with the goal of creating energy-efficient and integrally coordinated systems.

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Offering

Products & services

Industry:Plumbing & Building Services
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3.9/5

Conversioplan GmbH

✓ Offered8
HLKS design
Design for refrigeration, heating, ventilation and sanitary systems for new-build and renovation projects; customised plant, energy-efficient concepts, integrated concepts for water supply and wastewater disposal.
Refrigeration design
Design of refrigeration systems for commercial, air-conditioning and industrial refrigeration; cold rooms, chilled-water sets, VRF and multi-split systems, server room cooling, freecooling and special systems.
Heating design
Heating system design for single- and multi-family houses as well as commercial buildings and business premises; heat pumps, wood-fired heating systems, district heating, underfloor heating and domestic hot water preparation.
Ventilation design
Design of ventilation systems for single-family houses, business premises, workshops and fitness studios; controlled residential ventilation, restaurant and kitchen systems, air humidification and dehumidification.
Plumbing design
Design of plumbing systems for water supply and wastewater disposal; water treatment, water distribution, sewage systems, stormwater drainage, compressed air systems and domestic hot water preparation.
Energy certifications
Preparation of energy certifications for heating systems, thermal insulation as well as climate and ventilation systems; private inspections and execution inspections for own and third-party projects.
Specialist construction management
Specialist construction management for HLKS building projects, in particular for engineering and planning offices that require on-site support and coordination on the construction site.
Client representation
Client representation for HLKS projects; support for clients without specialist knowledge, including quality assurance during planning and implementation.
Trust & reputation

ranQ Trust Score of Conversioplan GmbH: 3.9 out of 5.0

Trust Score3.9/ 5.0

High

x

Data basis 96% · As of October 2026

Conversioplan GmbH scores 65.9 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.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.70.08%
Conversioplan GmbH scores 65.0 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.58.012%
  • 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%
Conversioplan GmbH 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%
Conversioplan 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

Conversioplan GmbH reaches a ranQ Trust Score of 3.9 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.

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Location

Ruchstuckstrasse 6
8306 Brüttisellen
Opening hours
Mon
07:30 - 17:00
Tue
07:30 - 17:00
Wed
07:30 - 17:00
Thu
07:30 - 17:00
Fri
07:30 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Limited Liability Company
UID
CHE-436.069.296
Founded
2022 · 4 years
Last commercial register change
January 5, 2023
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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