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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,887 companies indexed · Last updated: today
DirectoryBusiness & Technical ServicesTechnical Consulting & EngineeringZurichnaef energietechnik ag
naef energietechnik ag Logo
Verified· 3 sourcesTrust Score
Summary

About the company

naef energietechnik ag provides energy engineering services including energy concepts and planning, energy optimisation, geothermal systems, building physics, HVAC planning, measurement and control (MSR), specialised software and training.

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Offering

Products & services

Industry:Technical Consulting & Engineering
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4.1/5

naef energietechnik ag

✓ Offered
7
Energy technology
Heating and ventilation planning with a focus on renewable energies, residential ventilation systems, client advisory services for renovations and boiler replacement, as well as energy-efficient operating optimization.
Geothermal energy
Calculation and dimensioning of ground heat probes and probe fields, simulation with direct cooling, optimization of probe layout and probe depth, regeneration and geocooling.
Building physics
Energy performance assessments for new builds and conversions, MINERGIE certifications, thermography, investigations for mould and condensation, as well as calculation of thermal bridges and remediation measures.
HVAC planning
Heating and ventilation planning with a focus on renewable energies, residential ventilation systems, heat pumps, solar systems, and correctly designed hydraulic integration.
BMS/Net logger
Design and programming of controllers for building services projects, internet-based net loggers, building automation, remote access via websites, as well as measurement technology and data loggers.
Energy certificate software ENTECH 380/1
Software for heating energy demand and energy certificates according to SIA 380/1, suitable for MINERGIE and MINERGIE-P certificates, with U-value calculations and GEAK export.
Ground heat probe software EWS
Software for calculating flow and return temperatures, probe output and probe fields according to SIA 384/6, including direct cooling and load profiles.
Trust & reputation

ranQ Trust Score of naef energietechnik ag: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 88% · As of October 2026

naef energietechnik ag scores 56.3 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.65.024%
  • 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.35.310%
  • Review recency: No data point — the criterion is taken out of the weighting and does not lower the score.—8%
naef energietechnik ag scores 87.1 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%
naef energietechnik 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%
naef energietechnik ag scores 77.1 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 35.77.14%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

naef energietechnik ag reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». The rating draws, among other things, on 4.3 out of 5 stars from 3 customer reviews. The data basis is 88%, 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
4.3
of 5

Aggregated from 3 reviews across all connected sources

Sources
GGoogle4.33
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Comparisons

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Location

Jupiterstrasse 26
8032 Zurich
Opening hours
Mon
08:00 - 12:00, 13:00 - 17:00
Tue
08:00 - 12:00, 13:00 - 17:00
Wed
08:00 - 12:00, 13:00 - 17:00
Thu
08:00 - 12:00, 13:00 - 17:00
Fri
08:00 - 12:00, 13:00 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-460.045.161
Founded
2011 · 15 years
Last commercial register change
July 1, 2011
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.
100.0
6%
  • Branch offices: Branch offices linked in the commercial register. Having none is normal and costs no points.85.03%
    • Full methodology

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