Building services engineer in the
Canton of Solothurn

49 companies in Building services engineer based in the Canton of Solothurn — name and year of registration from the commercial register. The list below shows them all.

Companies

All 49 companies in the Canton of Solothurn

Kläy Haustechnik AG Logo

Kläy Haustechnik AG

Since 2003 · 101–500 empl.4.7(23)

Kläy Haustechnik AG plans and installs plumbing systems and heating systems for residential buildings, businesses, industry and public-sector facilities. Its services also include building-services engineering, maintenance and repairs.

Building services engineerPlumbingHeating
ranQ Trust Score 4.4 out of 5.0, rated Very high, Rank #1
Urs Kissling AG Logo

Urs Kissling AG

Since 1988 · 11–20 empl.

Urs Kissling AG is an independent building-services planning office. It plans plumbing systems for residential and non-residential buildings, as well as heating, ventilation and cooling systems, and provides specialist coordination for construction projects.

Building services engineerSanitary system planningHeating, ventilation and refrigeration planningSpecialist coordination
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #2
NBG Ingenieure AG Logo

NBG Ingenieure AG

Since 1995 · 1–10 empl.

NBG Ingenieure AG plans building services for new construction and renovation projects and advises on energy and sustainability matters. Its services include HVAC and plumbing engineering, building automation, fire protection, building assessments, renovation concepts, tendering and specialist construction management.

Building services engineerPlanning of Building ServicesEnergy and Sustainability ConsultingRefurbishment Concepts
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #3
loonica gmbh Logo

loonica gmbh

Since 2013 · 1–10 empl.

loonica gmbh plans and implements technical building infrastructure and supplies buildings with individual equipment and complex systems. Its services cover heating, ventilation, refrigeration, air conditioning, plumbing, solar and electrical systems, as well as technical support and servicing.

Building services engineerTechnical building infrastructureService services and technical supportSustainable building technology
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #4
PlanFabrik GmbH Logo

PlanFabrik GmbH

Since 2013 · 1–10 empl.

PlanFabrik GmbH provides technical planning services for building systems. Its services include heating and cooling load calculations and the design of radiant heating systems and thermally activated building systems (TABS).

Building services engineerHeating load calculationCooling load calculationSurface heating design & TABS
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #5
LKK Planung GmbH Logo

LKK Planung GmbH

Since 2017 · 1–10 empl.

LKK Planung GmbH plans heating, ventilation and cooling systems, as well as building automation, for buildings with varied uses. Its services also include 3D/BIM coordination of building services, client representation, renovation concepts and operational optimisation.

Building services engineerDesign of heating, ventilation, air-conditioning and refrigeration systemsClient representationFeasibility studies and renovation concepts
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #6
anrocon GmbH Logo

anrocon GmbH

Since 2018 · 1–10 empl.

anrocon GmbH provides consulting, construction management and engineering for building projects. It also supervises and coordinates building services, including heating, ventilation, cooling, plumbing, electrical systems and sprinklers.

Building services engineerConstruction managementEngineeringHVACSE specialist site management
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #7
Studer Gebäudetechnik Holding AG Logo

Studer Gebäudetechnik Holding AG

Since 2014 · 1–10 empl.5.0(5)

Studer Gebäudetechnik Holding AG is part of the SGT Gebäudetechnik group, whose planning offices design building services for new builds, renovations and conversions. The group covers heating, ventilation, cooling, plumbing and electrical systems, and also offers photovoltaics, energy consulting and project advisory services.

Building services engineerHLKSE planningEnergy consultingConsulting
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #8
Enerhaus Engineering AG Logo

Enerhaus Engineering AG

Since 2011 · 11–20 empl.5.0(3)

Enerhaus Engineering AG is an engineering consultancy specialising in energy and building services, including HVAC and plumbing design and energy consulting. Its work includes planning building-services systems and energy solutions such as heat pumps and ventilation heat recovery.

Building services engineerEnergy planning
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #9
eicher+pauli Olten AG Logo

eicher+pauli Olten AG

Since 2017 · 101–500 empl.5.0(2)

eicher+pauli Olten AG provides services in building, energy and environmental engineering. Its work includes developing energy strategies and planning energy supply systems and building technology for buildings, sites and districts, from initial concepts through to operation.

Building services engineerBuilding servicesEnergy planningEnergy concepts
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #10
Jaeggi-Enertech GmbH Logo

Jaeggi-Enertech GmbH

Since 2019 · 1–10 empl.

Jaeggi-Enertech GmbH provides independent consulting and planning services for heating technology and building energy. Its services include advice on heating replacements and heat pumps, energy assessments, project planning and construction supervision, as well as operational optimisation for residential, agricultural, commercial and industrial buildings.

Building services engineerAdvisory and planning for heat pumps and heating replacementBuilding permit application, grant application and approval documentsNoise protection report and noise protection assessment for heat pumps
ranQ Trust Score 4.0 out of 5.0, rated High, Rank #11
Solothurn Gebäudetechnik AG Logo

Solothurn Gebäudetechnik AG

Since 2020 · 11–20 empl.5.0(5)

Solothurn Gebäudetechnik AG plans and coordinates building services for new builds, renovations and conversions. Its services cover heating, ventilation, cooling, plumbing and electrical systems, as well as photovoltaics, energy consulting and project consulting.

Building services engineerHeating system designSanitary system designVentilation system design
ranQ Trust Score 4.0 out of 5.0, rated High, Rank #12
11i Gebäudetechnik GmbH Logo

11i Gebäudetechnik GmbH

Since 2022 · 1–10 empl.5.0(9)

11i Gebäudetechnik GmbH specializes in building-services planning and project delivery. It plans and coordinates heating, ventilation, air-conditioning and plumbing systems, supporting projects from the initial concept through commissioning.

Building services engineerHLKS overall planningHeating systemsVentilation systems
ranQ Trust Score 4.0 out of 5.0, rated High, Rank #13
ennovatis Schweiz AG Logo

ennovatis Schweiz AG

Since 2010 · 11–20 empl.3.0(8)

ennovatis Schweiz AG provides services and products for energy management and the energy optimisation of buildings. Its activities include planning, installing and operating energy systems, as well as energy monitoring, metering and billing, building automation and energy systems engineering.

Building services engineerEnergy monitoring and managementMetering and billing solutionsBuilding automation
ranQ Trust Score 4.0 out of 5.0, rated High, Rank #14
HLK Consulting GmbH Andreas Hauser Logo

HLK Consulting GmbH Andreas Hauser

Since 2008 · 1–10 empl.5.0(2)

HLK Consulting GmbH Andreas Hauser provides consulting, planning and implementation for heating, ventilation, air conditioning and refrigeration systems. It also develops measurement, control and regulation solutions and builds custom refrigeration machines, heat pumps and integrated systems.

Building services engineerConsultingPlanningPlant engineering
ranQ Trust Score 3.9 out of 5.0, rated High, Rank #15
AESCHLIMANN ENGINEERING AG Logo

AESCHLIMANN ENGINEERING AG

Since 2012 · 11–20 empl.5.0(1)

AESCHLIMANN ENGINEERING AG is a building services engineering firm specialising in sanitary installations. Its services also include planning sprinkler and fire protection systems, as well as sewerage and utility networks.

Building services engineerSanitary installationsFire protectionSewer and utility service lines
ranQ Trust Score 3.9 out of 5.0, rated High, Rank #16
Schmutz + Partner Energietechnik AG Logo

Schmutz + Partner Energietechnik AG

Since 2024 · 1–10 empl.

Schmutz + Partner Energietechnik AG provides engineering and planning services in energy and building technology. Its services include heating, climate-control and cooling-system planning, energy consulting and assessments, as well as building automation planning and condition analyses.

Building services engineerHeating planningAir-conditioning and refrigeration planningEnergy consulting
ranQ Trust Score 3.9 out of 5.0, rated High, Rank #17
Schmutz + Partner Gebäudetechnik AG Logo

Schmutz + Partner Gebäudetechnik AG

Since 2024 · 1–10 empl.

Schmutz + Partner Gebäudetechnik AG provides engineering and specialist planning services for building systems. Its work includes sanitary and drainage planning, technical coordination, condition assessments, water hygiene, and 3D and BIM planning.

EngineerPlumbing planningSewerage planningSpecialist coordination
ranQ Trust Score 3.9 out of 5.0, rated High, Rank #18
Brunner Engineering AG Logo

Brunner Engineering AG

Since 2015 · 11–20 empl.5.0(1)

Brunner Engineering AG is a building-services engineering firm offering energy consulting, heating, ventilation and cooling services. Its work includes energy concepts, subsidy applications, heat pumps, district heating, and ventilation and cooling systems.

Building services engineerEnergy consultingHeating system designVentilation system design
ranQ Trust Score 3.9 out of 5.0, rated High, Rank #19
Allemann Energietechnik GmbH Logo

Allemann Energietechnik GmbH

Since 2016 · 1–10 empl.4.5(2)

Allemann Energietechnik GmbH provides consulting, planning and project support for heating, ventilation, air conditioning and refrigeration systems. Its services also include energy concepts, energy-efficiency advice and planning for building services in construction projects.

Building services engineerConsulting, planning and project development of heating, ventilation, air-conditioning and refrigeration systemsEnergy concepts and energy efficiency consultingPlanning and implementation of replacement and refurbishment solutions for building services systems
ranQ Trust Score 3.8 out of 5.0, rated High, Rank #20
HKG Engineering AG Pratteln, Zweigniederlassung Olten Logo

HKG Engineering AG Pratteln, Zweigniederlassung Olten

Since 2026 · 1–10 empl.

HKG Engineering AG Pratteln, Zweigniederlassung Olten is an engineering firm specialising in electrical engineering, building services and energy consulting. Its services include planning electrical systems, building automation and integrated project planning.

Building services engineerElectrical engineeringBuilding automationBuilding IT
ranQ Trust Score 3.6 out of 5.0, rated Solid, Rank #21
WENGET GmbH Logo

WENGET GmbH

Since 2026 · 1–10 empl.

WENGET GmbH plans, optimizes and rehabilitates building technology and building automation for properties in German-speaking Switzerland. The company offers, among other things, energy consulting, GA planning, operational optimization, as well as quality assurance and coordination of renovation projects.

EngineerBuilding Automation Consulting & PlanningEnergy Consulting, Monitoring & Operational OptimisationHydraulic Performance Measurement & Analysis
ranQ Trust Score 3.6 out of 5.0, rated Solid, Rank #22
SM Planung KlG Logo

SM Planung KlG

Since 2026 · 1–10 empl.

SM Planung KlG is a building-services engineering firm specialising in heating and plumbing systems. It plans and designs systems for new buildings and renovation projects, and provides technical consultancy, tendering and site supervision.

Building services engineerSanitary PlanningHeating PlanningBuilding Services Engineering
ranQ Trust Score 3.4 out of 5.0, rated Solid, Rank #23
Air-Haustechnik AG Logo

Air-Haustechnik AG

Since 2026 · 1–10 empl.

Air-Haustechnik AG specialises in ventilation and climate-control technology. The company plans, designs, installs and maintains ventilation and air-conditioning systems for industrial, commercial and public buildings, and also provides engineering and building-services personnel.

Building services engineerVentilation and air-conditioning technologyEngineeringProduction of ventilation components
ranQ Trust Score 3.4 out of 5.0, rated Solid, Rank #24
Trummer Technics Logo

Trummer Technics

Since 2026 · 1–10 empl.

Trummer Technics plans plumbing and heating systems for new builds and renovations, and produces models and documentation for prefabrication and installation. Its services also include technical and business consulting, as well as support with AI development and use.

Building services engineerPlanning and Modelling in Building Services EngineeringBIM to Field and PrefabricationConsulting in Building Services Engineering
ranQ Trust Score 3.4 out of 5.0, rated Solid, Rank #25
ecoMIB GmbH Logo

ecoMIB GmbH

Since 2015 · 1–10 empl.

ecoMIB GmbH plans and implements connected building automation solutions for energy-efficient building operation. Its services include planning heating, electrical and plumbing systems, as well as training on infrared heating systems.

Building services engineerBuilding Services Analysis (ecoMIB light)Building Automation Concept (ecoMIB SOLL)Implementation Project Planning (ecoMIB Planung)
No score yet
FreiPlan GmbH Logo

FreiPlan GmbH

Since 2015 · 1–10 empl.

FreiPlan GmbH plans building services, with a focus on plumbing and sanitary systems. Its services cover strategic planning, condition assessments, project design and tendering, as well as implementation, commissioning and coordination of heating, ventilation, air conditioning, plumbing and electrical planning.

Building services engineerSanitary services planningHVAC-S specialist planning and coordinationSewerage planning
No score yet
engineering 5D GmbH Logo

engineering 5D GmbH

Since 2019 · 1–10 empl.

engineering 5D GmbH provides engineering services for the planning and operation of building technology systems.

Building services engineerEngineering services for the design and operation of building services systems
No score yet
RUFER engineering GmbH Logo

RUFER engineering GmbH

Since 2020 · 1–10 empl.

RUFER engineering GmbH provides services in building services engineering and building automation. Its work includes planning, consulting, project support and technical coordination, as well as hygiene inspections of ventilation and air-conditioning systems, private inspections, and the analysis and optimisation of existing systems.

Building services engineerPlanning building automation and building servicesOptimisation of installations and building servicesTechnical specialist coordination
No score yet
PB

Peter Bartlome

Since 1978 · 1–10 empl.

Building services engineer
No score yet
IS

Ingenieurbüro Stefan Dietschi

Since 1989 · 1–10 empl.

Building services engineer
No score yet
RH

Rombaldoni Haustechnik + Fitness

Since 2002 · 1–10 empl.

Building services engineer
No score yet
PE

PAG Elektro Consulting GmbH

Since 2009 · 1–10 empl.

Building services engineer
No score yet
RG

Re-Sol-Tech GmbH

Since 2011 · 1–10 empl.

Building services engineer
No score yet
MI

Moto Invest GmbH

Since 2016 · 1–10 empl.

Building services engineer
No score yet
OC

Opus Clima GmbH

Since 2016 · 1–10 empl.

Building services engineer
No score yet
ES

Equans Switzerland AG

Since 2017 · 1–10 empl.

Building services engineer
No score yet
EA

Enerplan AG, Zweigniederlassung Solothurn

Since 2018 · 1–10 empl.

Building services engineer
No score yet
NG

nowoS GmbH

Since 2019 · 1–10 empl.

Building services engineer
No score yet
DD

de Deugd GmbH

Since 2020 · 1–10 empl.

Building services engineer
No score yet
AI

AC I SK Holding AG

Since 2021 · 1–10 empl.

Building services engineer
No score yet
FH

Friedli Haustechnikplanung

Since 2023 · 1–10 empl.

Building services engineer
No score yet
EA

Enerplan AG, Zweigniederlassung Olten

Since 2023 · 1–10 empl.

Building services engineer
No score yet
MG

MC Gebäudetechnik GmbH

Since 2023 · 1–10 empl.

Building services engineer
No score yet
VS

Vincent Steiner Gebäudetechnik

Since 2024 · 1–10 empl.

Building services engineer
No score yet
HC

Hussain Consulting

Since 2025 · 1–10 empl.

Building services engineer
No score yet
WT

WyssDome Tec GmbH

Since 2025 · 1–10 empl.

Building services engineer
No score yet
CT

CADvolution Tran

Since 2026 · 1–10 empl.

Building services engineer
No score yet
ZG

ZERPLA GmbH

Since 2026 · 1–10 empl.

Building services engineer
No score yet

Building services engineer in the Canton of Solothurn

49Building services engineerCommercial register (Zefix) · as of November 15, 2026
2018Median year of registrationCommercial register (Zefix) · as of November 15, 2026
49in the Canton of SolothurnCommercial register (Zefix) · as of November 15, 2026
2,231in SwitzerlandCommercial register (Zefix) · as of November 15, 2026
Locations

Building services engineer in the region

Point size by number of companies per place.

Source: commercial register (Zefix) · as of November 15, 2026

Largest places

Olten11Solothurn6