HWT Haus- und Wassertechnik AG

What HWT Haus- und Wassertechnik AG does

HWT Haus- und Wassertechnik AG is a Swiss building-services (Haustechnik) company headquartered in Au, St. Gallen (St. Galler Rheintal), founded in 1987 as successor to the family firm Rüegg Sanitär und Spenglerei. It operates across five integrated service lines: sanitary installations, heating systems (including certified Viessmann heat pumps), bathroom renovations, PP swimming pool construction under the HWT Pools sub-brand, and a dedicated plastics factory (Kunststoffwerk) that manufactures a patent-protected polypropylene (PP) container and reservoir system certified under SVGW, ÖVGW, KTW, and DVGW W270 for drinking-water applications. The firm also runs a nationwide Rohrleitungsbau (pipeline construction) operation handling gas, water, sewage, double-walled, and submarine pipelines.

The company serves three primary customer segments: residential property owners (new construction, renovation, bathroom remodels, pools, 24/7 emergency service), real-estate developers and property managers (multi-unit projects such as 67-unit Neubau Duettino Altstätten and 26-unit Überbauung Mitte Widnau), and Swiss municipalities (drinking-water reservoirs, well chambers, pipeline networks across 40-50+ municipalities including St. Moritz, Pontresina, and Horgen), with a secondary industrial/commercial segment. Revenue is generated through project-based installation contracts (sanitary, heating, pools, pipeline), manufactured hardware sales (PP containers and reservoirs), recurring pool-maintenance subscriptions, and a 24-hour emergency service priced per intervention.

Distribution is field-led: three fully equipped service vehicles operate 24/7 with a dedicated Pikettdienst hotline, supported by phone, email, and online service-request intake. Go-to-market relies on direct sales, the company's website (hwt.ch), Facebook and Instagram presence, and earned media (e.g., LEADER FOKUS regional magazine coverage). The owner-operator structure shows multi-generational involvement: founder Magnus Hugentobler, management-board members Dennis Hugentobler, Janine Zoller, Mirco Bernhart, and Florian Alber, plus a dedicated training officer (Joel Hofer) supporting the HWT Academy apprenticeship program that has produced 83 graduates to date. HWT is privately held as a Swiss Aktiengesellschaft with no public listing or outside funding rounds disclosed.

Name

HWT Haus- und Wassertechnik AG

Legal name

HWT Haus- und Wassertechnik AG

Website

https://hwt.ch

Company type

Private

Founded year

1987

Operating status

Operating

Headcount range

11–50 employees

Short description

HWT Haus- und Wassertechnik AG is a Swiss Haustechnik provider (founded 1987, Au SG) serving residential, commercial, real-estate, and municipal clients. It delivers sanitary, heating, and bathroom installations, PP swimming pools, pipeline construction, and patented PP drinking-water container manufacturing across Switzerland.

Ownership category

akta.pro rank

Product category

Plumbing, Heating, and Pipeline Construction Services

NAICS

Plumbing, Heating, and Air-Conditioning Contractors (238220), Water Supply and Irrigation Systems (221310), Air-Conditioning and Warm Air Heating Equipment and Commercial and Industrial Refrigeration Equipment Manufacturing (333415), Commercial and Service Industry Machinery Manufacturing (333310)

SIC

Air-Cond & Warm Air Heatg Equip & Comm & Indl Refrig Equip (3585), Water Supply (4941), Misc Industrial & Commercial Machinery & Equipment (3590)

akta.pro primary industry

HVAC & Refrigeration Contracting (IMAFALAB)

akta.pro secondary industries

Equipment Installation & Upgrades (Automation, Covers, Sanitizers) (HSAIALAJ), Plumbing & Building Drain/Waste/Vent (DWV) Pipe & Fittings (IMANADAG), Monitoring & Control (Dosing Systems, Remote Monitoring, Sensors) (BPABAJAK)

Keywords

• Plumbing installation services
• Heating system installation
• Pipeline construction services
• Polypropylene container manufacturing
• Swimming pool construction

Headquarters

HQ city

Au SG

HQ country

Switzerland

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Supply Chain, Operations, Technology or R&D, Marketing or Sales

Revenue model

1. Sanitary Installation Services: Installation, maintenance and repair of sanitary systems for residential, commercial and industrial buildings. Includes new construction, renovation, and emergency repair services.
2. Heating Systems: Installation of heating systems including heat pumps (Viessmann partnership), alternative heating solutions, and modern heating technology.
3. Swimming Pool Construction and Maintenance: Complete pool installation from planning to execution, including pool maintenance services and renovation. PP pools manufactured in-house.
4. 24-Hour Emergency Service: Round-the-clock emergency service for plumbing crises including flooding, burst pipes, and blockages. Three service vehicles with specialists available 24/7 including weekends and holidays.
5. Plastic Container/Behälterbau Products: Manufacturing and sale of PP plastic settlement water infrastructure including drinking water reservoirs, well chambers (Brunnenstuben), and custom container solutions.
6. Pipeline Construction Services: Switzerland-wide pipeline construction including gas lines, water transport lines, sewage lines, double-walled pipes, and submarine pipelines.

Pricing tiers

Go-to-market motion2 records

Distribution channels3 records

Marketing channels5 records

Core offering

HWT Haus- und Wassertechnik AG is a Swiss building-technology services company that plans, installs, maintains, and services sanitary systems, heating systems (including Viessmann heat pumps), bathroom renovations, and swimming pools for residential, commercial, industrial, and municipal customers. The company also manufactures patented polypropylene (PP) containers and reservoirs for drinking water infrastructure and executes certified pipeline construction (gas, water, sewage, double-walled, and submarine pipes) across Switzerland, supported by a 24/7 emergency service.

Product overview

HWT Haus- und Wassertechnik AG is a Swiss building services company offering integrated Haustechnik (building technology) solutions for residential, commercial, and industrial construction. The core portfolio centers on Sanitäre Installationen (sanitary installations) and Heizung (heating systems, including Viessmann heat pumps), complemented by Badumbauten (bathroom renovations), Schwimmbad (swimming pools under the HWT Pools sub-brand), Kunststoffwerk (polypropylene container and reservoir manufacturing), Rohrleitungsbau (pipeline construction), and Fachplanung (technical planning). Services include a 24h emergency service. The company manufactures PP-based settlement structures for drinking water supply and offers pool systems with remote monitoring capabilities. Founded in 1987 and headquartered in Au SG (St. Gallen Rheintal), the company employs over 50 people.

Differentiator

Problem solved

Functional benefit

Products and services

• Sanitäre Installationen (Sanitary Installations) Planning, installation, and maintenance of sanitary systems for residential, commercial, and industrial buildings. Includes water extraction, treatment, and distribution systems, delivered by certified Swiss plumbers.
• Heizung (Heating Systems) Heat pump systems (including Viessmann products as certified specialist partner), alternative heating solutions, and modern heating system installations for residential, commercial, and industrial buildings.
• Badumbauten (Bathroom Renovations) Complete bathroom remodeling services including 3D visualization planning, design, and full coordination of trades from tilers to painters, targeting residential homeowners.
• 24h Service (24-Hour Emergency Plumbing Service) Round-the-clock emergency plumbing service with three fully equipped service vehicles available 24/7 including weekends and holidays, for emergencies such as flooding, pipe bursts, and blockages.
• Schwimmbad (HWT Pools - Swimming Pool Construction and Maintenance) Complete pool construction including design, installation, remote control systems via mobile/internet, maintenance, and renovation services. Features PP (polypropylene) pools manufactured in Switzerland with 15mm thick plates, plus annual flat-rate pool maintenance packages.
• Kunststoffwerk (Plastics Factory - PP Container and Reservoir Manufacturing) Manufacture of polypropylene (PP) settlement structures for drinking water supply including containers, reservoirs, well chambers (Brunnenstuben), and custom container solutions. Features a patented system, certified production in Switzerland, and compliance with SVGW, ÖVGW, KTW, and DVGW W270 standards. Designed for 100-year lifespan.
• Rohrleitungsbau (Pipeline Construction) Pipeline construction services including gas lines, water transport lines, sewage lines, double-walled pipes, cable conduits, and submarine pipelines. Delivered by certified plastic pipe welders and installers operating throughout Switzerland, with references from over 40 municipalities including St. Moritz, Pontresina, and Horgen.
• Fachplanung (Specialist Technical Planning) Complete project management from A to Z for building technology systems using computer-aided design programs, focused on energy-efficient solutions and sustainability for new construction, renovation, and modernization projects.

Quantifiable outcome

• 100-year designed lifespan for drinking water reservoirs
• +2 more outcomes

Named customers4 records

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

One partnership is on record.

• ViessmanncoreTechnology or IntegrationViessmann is a leading heat pump manufacturer. HWT operates as a certified specialist partner offering Viessmann heat pumps with promotional pricing (CHF 2,500 discount). Mirco Bernhart is a certified FWS (Fachvereinigung Wärmepumpen Schweiz) specialist partner and impulse advisor.

Scale indicators5 records

Recent moves6 records

Expansion highlights5 records

Broad incumbents

• Walo Bertschinger AG: Major Swiss civil engineering and construction contractor active in pipeline, road and infrastructure works across Switzerland. Comparable to HWT's pipeline construction (Rohrleitungsbau) operations at scale, serving many of the same municipalities.
• Implenia AG: Switzerland's largest construction and real-estate services group, active in building construction, civil engineering and special foundation works. Comparable as a Swiss incumbent building-services ecosystem player, though far larger and more diversified than HWT.
• Bouygues Energies & Services (Schweiz): European-headquartered multi-trade building-services and energy-efficiency provider active in Switzerland. Comparable to HWT in HVAC/sanitary installation scope and Switzerland-wide coverage, but operates as a much larger incumbent with multi-country resources and broader portfolio.

Direct peers

• Holinger AG: Swiss engineering and consulting firm specialized in municipal water infrastructure (drinking water, wastewater, hydraulic engineering). Highly comparable to HWT's certified drinking-water reservoir and pipeline construction business on the public-sector side, with overlapping SVGW standards and Swiss municipal clients.
• Hunziker Betatech AG: Swiss engineering firm focused on municipal water and wastewater infrastructure, including pipeline and treatment-plant design. Closely comparable to HWT's Rohrleitungsbau and Brunnenstuben businesses, often competing for the same municipal tender pipeline.
• Burkhalter Group: Listed Swiss provider of building services with 50+ locations across Switzerland. Comparable to HWT as a multi-trade building-services contractor serving residential, commercial and industrial clients, although Burkhalter's core specialty is electrical rather than sanitary/heating.
• Berndorf Bäderbau GmbH: Austrian/European manufacturer of stainless-steel and pool systems for public and private pools. Comparable to HWT's HWT Pools sub-brand in pool construction and material-based pool manufacturing, although Berndorf focuses on stainless steel rather than PP.

Others

• SIMONA AG: German manufacturer of thermoplastic semi-finished products (PP, PE, PVC sheets and pipes). Listed in HWT's partnership notes as a material supplier, making SIMONA an upstream enabler rather than direct competitor — but the closest comparable for PP-container material technology.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights6 records

Customer concentration

• Facebookfacebook.com/HWT-Haus-und-Wassertechnik-AG-519559418136634
• Instagraminstagram.com/hwt_ag
• LinkedInlinkedin.com/company/hwt-haus--und-wassertechnik-ag

Compliance4 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles16 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about HWT Haus- und Wassertechnik AG