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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryEnergy & EnvironmentSolar & PhotovoltaicsJonaLampert + Walker AG
Lampert + Walker AG Logo
Verified· 4 sourcesTrust Score
Summary

About the company

Lampert + Walker AG is a service company specializing in the planning, execution and maintenance of heating and cooling systems in buildings. The core activities include consulting, planning and execution of projects in the field of building technology, particularly in the areas of heat pumps, natural gas/biogas, wood heating, solar systems and cooling.

AI-generated
Offering

Products & services

Industry:Solar & Photovoltaics
✓ Offered10
Heat pump
Heat pump systems for using ground, ambient air or water for heating; planning and installation with WP system modules.
District heating
District heating connections and heating systems with heat from KVA and ARA; nearly CO₂-free in operation, space-saving and designed for decades of use.
Solar thermal systems
Thermal solar systems to supplement heating and domestic hot-water preparation; to reduce energy costs and as a sustainable solution.
Natural gas/biogas heating
Heating systems using natural gas or biogas as the energy source; part of the product portfolio for building services and heat supply.
Wood heating
Heating systems using wood as the energy source; part of the product offering for building heat.
Cooling
Cooling systems for buildings; included in the product offering alongside heating solutions and intended for operation of building installations.
Consulting / impulse consulting
Consulting for heating, cooling and building services; support with questions about systems, modernisation and suitable solutions.
Planning
Planning of heating and cooling systems in buildings; sizing and preparation of systems for efficient and low-fault operation.
Execution
Execution of heating and cooling systems as well as renovation assignments in single-family and multi-family houses and for special projects.
Service
Service for heating and cooling systems, fault reports and service requests; in emergencies with on-call duty 7 x 24 hours.
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4.3/5

Lampert + Walker AG

Trust & reputation

ranQ Trust Score of Lampert + Walker AG: 4.3 out of 5.0

Trust Score4.3/ 5.0

Very high

x

Data basis 100% · As of October 2026

Lampert + Walker AG scores 77.2 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.78.624%
  • 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.65.210%
  • 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%
Lampert + Walker AG scores 89.3 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.70.07%
Lampert + Walker AG scores 86.7 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).86.722%
Lampert + Walker AG scores 24.3 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 35.48.64%
  • Media authority: Quality and number of editorial mentions, weighted by the importance of the source, plus the recency of the latest high-quality mention.0.04%
Qualifications+0.00

Lampert + Walker AG reaches a ranQ Trust Score of 4.3 out of 5.0 — rated «Very high». The rating draws, among other things, on 4.8 out of 5 stars from 12 customer reviews. As of October 2026.

The Trust Score cannot be bought and is calculated from publicly verifiable data.

Reviews

Aggregated rating

Aggregated rating
4.8
of 5

Aggregated from 12 reviews across all connected sources

Sources
GGoogle4.812
★TrustpilotSoon
PProvenExpertSoon

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

Press

Media

February 2, 2021Media
Lampert Heizungen & Walker Heizungen bündeln Kräfte | Rapperswil-Jona
linth24.ch

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Location

Buechstrasse 32a
8645 Jona
Opening hours
Mon
07:30 - 11:30, 13:30 - 16:30
Tue
07:30 - 11:30, 13:30 - 16:30
Wed
07:30 - 11:30, 13:30 - 16:30
Thu
07:30 - 11:30, 13:30 - 16:30
Fri
07:30 - 11:30, 13:30 - 15:45
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-105.922.255
Founded
1991 · 35 years
Last commercial register change
May 27, 2026
Employees
11 to 20
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.70.03%
    • Full methodology

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