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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,937 companies indexed · Last updated: today
DirectoryBusiness & Technical ServicesTechnical Consulting & EngineeringLiestalDelta-T Heizungs- und Energieplanung Christoph Schwarz
Delta-T Heizungs- und Energieplanung Christoph Schwarz Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of Delta-T Heizungs- und Energieplanung is the planning and implementation of energy-efficient and environmentally friendly heating systems for single-family and multi-family homes, including consulting, planning, implementation and certification of heating solutions such as heat pumps and geothermal energy.

AI-generated
Offering

Products & services

Industry:Technical Consulting & Engineering
✓ Offered8
Heating system planning for single- and multi-family homes
Planning energy-efficient heating systems for new builds and renovations, including heat pumps, geothermal energy, and building-specific concepts for single- and multi-family homes.
Heating system renovations
Renovation of existing heating systems by replacing the system or integrating modern heat pumps and geothermal energy to reduce energy consumption and CO2 emissions.
Initial advisory service
Initial consultation and analysis of the structural situation, including checks of insulation, energy efficiency, and the roof, windows, and façade as a basis for renovation or new-build decisions.
Submissions for grant applications
Support with grant applications for heating projects, including compiling and submitting the documents, as well as guidance through to completion of the process.
WPSM certifications
Preparation and processing of WPSM certifications for heat pump systems, ensuring that efficiency and sustainability requirements and funding prerequisites are met.
Building applications and notification procedures for heat pumps
Submission of building applications and notification procedures for heat pumps, including documents and approvals to ensure a smooth installation process.
Borehole permit applications for ground heat probe drilling
Guidance through the approval process for ground heat probe drilling, including preparation and submission of the required borehole applications.
FBH planning
Planning underfloor heating for new builds and renovations, tailored to the building conditions, energy demand, and an even distribution of heat.
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3.6/5

Delta-T Heizungs- und Energieplanung Christoph Schwarz

Trust & reputation

ranQ Trust Score of Delta-T Heizungs- und Energieplanung Christoph Schwarz: 3.6 out of 5.0

Trust Score3.6/ 5.0

Solid

x

Data basis 96% · As of October 2026

Delta-T Heizungs- und Energieplanung Christoph Schwarz scores 58.0 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.78.08%
Delta-T Heizungs- und Energieplanung Christoph Schwarz scores 52.6 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.39.612%
  • 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%
Delta-T Heizungs- und Energieplanung Christoph Schwarz 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%
Delta-T Heizungs- und Energieplanung Christoph Schwarz 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

Delta-T Heizungs- und Energieplanung Christoph Schwarz reaches a ranQ Trust Score of 3.6 out of 5.0 — rated «Solid». 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.

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Location

Sulzbergerstrasse 10
4410 Liestal

At a glance

Legal form
Sole proprietorship
UID
CHE-486.785.153
Founded
2024 · 2 years
Last commercial register change
May 29, 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.67.06%
  • 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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