Sontex

What Sontex does

Sontex SA is a Swiss privately-held manufacturer of measurement systems for thermal energy, water, and consumption data, headquartered in Sonceboz, Switzerland. The company was established in 1989 through a management buy-out of the calorimetry division of Sonceboz S.A. and has operated with substantially unchanged ownership and Swiss Made manufacturing ever since, running development, production, and final inspection at a single 4,000 m2 facility.

The product portfolio centers on thermal energy meters (Supercal and Superstatic families using a fluidic oscillation measurement principle with piezoelectric sensors, originally a NASA technology brought to market maturity by Sontex), ultrasonic water meters (Superaqua series using a mirror-free architecture), electronic heat cost allocators (Sontex 565/566/868/878), and a Supercom radio module family that supports proprietary 433 MHz bidirectional radio, wM-Bus/OMS, and LoRaWAN protocols. Readout is delivered through walk-by devices (Supercom 636/637), the Superlink C gateway, and the Sonexa web platform for consumption data and AES-128 key management, with integration into building management and billing systems via BACnet, Modbus, and M-Bus. The portfolio is backed by MID 2014/32/EU type approval, EN 1434, PTB cooling approval, ISO 9001:2015, ISO 14001:2024, and an ISO/IEC 17025-accredited in-house calibration laboratory (SCS 0071) since 1996.

Sontex sells exclusively through a partner network of more than 30 country-specific distributors and original equipment manufacturers across Europe, the Middle East, and Asia-Pacific, layering regional sales managers and key account managers on top for strategic accounts. The customer base spans energy suppliers and district heating operators, building automation integrators, and property managers across residential, commercial, and infrastructure deployments. Revenue is generated primarily through hardware sales of meters and radio modules with a smaller recurring layer from the Sonexa platform, while pricing is not publicly disclosed and customer engagement is handled via the partner channel.

Name

Sontex

Legal name

Sontex SA

Website

https://sontex.ch

Company type

Private

Founded year

1989

Operating status

Operating

Headcount range

101–250 employees

Short description

Sontex SA is a privately-held Swiss manufacturer of thermal energy meters, ultrasonic water meters, heat cost allocators, and radio readout infrastructure, sold via a 30+ country partner network to energy suppliers, building automation integrators, and property managers.

Ownership category

akta.pro rank

Product category

Energy Metering Equipment

NAICS

Totalizing Fluid Meter and Counting Device Manufacturing (334514), Other Measuring and Controlling Device Manufacturing (334519)

SIC

Industrial Instruments For Measurement, Display, And Control (3823), Services-Testing Laboratories (8734)

akta.pro primary industry

Customer Premise Equipment Interfaces (Regulators, ERTs/Modules & Indoor/Outdoor Meter Sets) (EUAJACAE)

akta.pro secondary industries

Asset & Maintenance Management (EAM/CMMS) Platforms (HDAEAEAM), Water Testing Kits & Monitoring (Household) (CRAJAJAL)

Keywords

• Thermal energy metering
• Heat cost allocation
• Ultrasonic water meters
• Energy consumption data
• Smart metering systems

Headquarters

HQ city

Sonceboz

HQ country

Switzerland

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Heat Meters and Thermal Energy Meters: Sale of thermal energy meters (Supercal, Superstatic series) for heating and cooling applications in building technology, automation, and heating networks. Products meet MID 2014/32/EU and EN 1434 standards.
2. Heat Cost Allocators: Sale of electronic heat cost allocators (565, 566, 868, 878 series) for fair cost allocation in residential and commercial properties. Includes radio-enabled versions for remote reading.
3. Electronic Water Meters: Sale of Superaqua ultrasonic water meters (Superaqua 1, 3, 5) with wireless connectivity for commercial and utility deployments.
4. Radio Modules and Communication Equipment: Sale of radio modules (Supercom series) for retrofitting existing water meters and smoke detectors, enabling remote reading capability. Includes concentrators and repeaters.
5. Sonexa Platform Subscription: Web-based platform service for consumption data management and AES key administration with 24/7 accessibility. Likely subscription-based for data management and key management services.

Go-to-market motion2 records

Distribution channels1 record

Marketing channels5 records

Core offering

Sontex develops and manufactures measurement systems for energy consumption data, including thermal energy meters, ultrasonic water meters, heat cost allocators, and radio communication modules. The company's products enable accurate billing, monitoring, and allocation of heating and water usage in residential and commercial buildings. A companion software platform (Sonexa) supports data management, analysis, and integration with energy supplier and building management systems.

Product overview

Sontex offers a comprehensive metering product portfolio centered on thermal energy meters (Supercal, Superstatic families), ultrasonic water meters (Superaqua series), and heat cost allocators (Sontex 565/566/868/878). These hardware products integrate through a range of radio modules (Supercom family supporting Sontex Radio, wM-Bus/OMS, and LoRaWAN protocols) and are managed via the Sonexa cloud platform for automated data readout. The ecosystem includes walk-by readout solutions (Supercom 636/637), gateway solutions (Superlink C), and software tools (Tools Supercom) for configuration and billing integration. Products support BACnet and Modbus for building automation integration, with communication options spanning wireless (LoRaWAN, wM-Bus, Sontex proprietary radio) and wired (M-Bus) protocols.

Differentiator

Problem solved

Functional benefit

Brands

• Supercal: Thermal energy meter product family for various flow rates, including Supercal 5, Supercal 5S, Supercal 739, and Supercal 531 (end of life).
• Superstatic
• Superaqua
• Supercom
• Superlink C
• Sonexa Platform
• Sontex 565/566/868/878

Products and services

• Supercal Thermal Energy Meters Thermal energy meters for accurate measurement of heat and cooling consumption in residential, commercial, and district heating systems. Used by energy suppliers, facility managers, and building operators for billing and monitoring.
• Superstatic Thermal Energy Meters Static (no moving parts) thermal energy meters designed for long-term reliability and measurement accuracy in heating/cooling applications.
• Superaqua Ultrasonic Water Meters Ultrasonic water meters for cold and hot water consumption measurement, with no moving mechanical parts, targeted at utilities and building owners for billing and consumption monitoring.
• Heat Cost Allocators (565/566/868/878 series) Electronic heat cost allocators used to apportion heating costs in multi-apartment buildings based on individual radiator usage.
• Supercom Radio Modules Wireless radio communication modules that enable remote and automated reading of Sontex meters and allocators across building and district networks.
• Sonexa Software Platform Software platform for configuring, reading, and analyzing data from Sontex metering devices, supporting billing, energy monitoring, and integration with utility and building management systems.

Quantifiable outcome

• No recalibration required for over 10 years due to static measurement principle with no moving parts
• +2 more outcomes

Named customers10 records

Segments3 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

Yes

API docs

API detail

Core technology

AI maturity

App detail

Integration9 records

Feature7 records

Partnerships

15 partnerships are on record, tiered core and regional.

• AquacoreOthersEuropean association of water and heat meter manufacturers. Sontex is a member, enabling industry collaboration, standards influence, and market intelligence sharing.
• BACnet InternationalcoreTechnology or IntegrationBACnet Testing Laboratories member. Ensures interoperability of Sontex products (Supercal 5) with BACnet building automation networks. Products carry BTL certification and listing.
• HLK StuttgartcoreOthersTesting institute and approval office for heat cost allocators. Provides certification and testing services for Sontex heat cost allocator products.
• LoRa AlliancecoreTechnology or IntegrationLoRa Alliance member. Enables integration of LoRaWAN technology in Sontex devices (Sontex 878, Supercom W1-L, Supercom W2-L, Supercom P) for long-range, low-power IoT communication.
• OMS (Open Metering System)coreTechnology or IntegrationInterest group member for Open Metering System Specification. Sontex products (Supercom 637, Sontex 868) support OMS standard for interoperability in metering applications.
• Armatec (Sweden)regionalChannel Partner/ Reseller/ DistributorRegional distribution partner for Sontex products in Sweden.
• ANTAP (Poland)regionalChannel Partner/ Reseller/ DistributorRegional distribution partner for Sontex products in Poland.
• Aquaflow (Norway)regionalChannel Partner/ Reseller/ DistributorRegional distribution partner for Sontex products in Norway.
• Belimo (Asia-Pacific)regionalChannel Partner/ Reseller/ DistributorRegional distribution partner covering Australia, China, India, Indonesia, Japan, Korea, Malaysia, and Singapore.
• Elster (France, Netherlands)regionalChannel Partner/ Reseller/ DistributorRegional distribution partner for Sontex products in France and Netherlands.
• DMS (UK, Ireland)regionalChannel Partner/ Reseller/ DistributorRegional distribution partner for Sontex products in United Kingdom and Ireland.
• Enbra (Czech Republic, Poland, Slovakia)regionalChannel Partner/ Reseller/ DistributorRegional distribution partner covering Czech Republic, Poland, and Slovakia.
• Saif International (Middle East)regionalChannel Partner/ Reseller/ DistributorRegional distribution partner covering Egypt, Iraq, Jordan, Saudi Arabia, Turkey, and United Arab Emirates.
• Sontex EU (Germany)regionalChannel Partner/ Reseller/ DistributorRegional subsidiary partner for Sontex products in Germany.
• Sontex ItalyregionalChannel Partner/ Reseller/ DistributorRegional subsidiary partner for Sontex products in Italy.

Scale indicators4 records

Recent moves7 records

Expansion highlights6 records

Broad incumbents

• Itron: Global smart-infrastructure incumbent with broad electricity, gas, water and heat metering plus AMI/head-end systems; competes with Sontex primarily in large utility tenders and through thermal energy metering for district heating.
• Landis+Gyr: Swiss-headquartered metering and grid intelligence giant (electricity primary, expanding into water and heat); overlaps with Sontex in buildings and district heating use cases but at much larger scale and broader portfolio.

Direct peers

• Badger Meter: US-headquartered flow measurement and control specialist focused on ultrasonic and electromagnetic water meters; a direct competitive reference for Sontex's Superaqua ultrasonic line in commercial and utility deployments.
• Kamstrup: Danish manufacturer of ultrasonic heat meters, cooling meters and smart water meters with matching multi-protocol radio and cloud data management, serving the same energy supplier, district heating and building automation customers as Sontex.
• Zenner: German manufacturer of heat meters, HCA and (ultrasonic) water meters, with strong German and Eastern European distribution; closest mid-sized direct competitor to Sontex on hardware range, IoT integration and channel go-to-market.
• Diehl Metering: German headquartered manufacturer of heat meters (including fluidic-oscillation products), water meters, HCA and AMI/radio systems; competes head-to-head with Sontex in district heating, property and utility tenders across Europe.
• Apator Metrix: Polish manufacturer of heat meters, water meters and HCA distributed across Central and Eastern Europe; competes with Sontex's channel-partner lines (ANTAP, Enbra, Ciesla) in overlapping CEE tenders.
• Engelmann Sensor / Qundis: Manufacturer of electronic heat cost allocators, heat and water meters with wM-Bus/OMS and LoRaWAN radio; directly overlaps Sontex's HCA (Sontex 565/566/868/878) and Superaqua portfolios for property and building automation use cases.

Emerging players

• Axioma Metering: Lithuanian ultrasonic water and heat meter maker with LoRaWAN/wM-Bus connectivity; comparable product architecture to Sontex Superaqua/Superstatic but at smaller scale and primarily regional reach.
• Wecan Meter: Chinese manufacturer of ultrasonic cold/hot water and heat meters with multi-protocol radio; cost-competitive emerging player increasingly relevant to Sontex's APAC and Eastern European expansion via Belimo and partner channels.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/sontex-sa

Compliance6 records

Revenue estimate

Valuation estimate

Number of profiles

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 Sontex