What Seltron does

Seltron d.o.o. is a Slovenian manufacturer, founded in 1991 and headquartered in Maribor, that designs and produces heating and cooling regulation products for residential and commercial applications. Its core portfolio spans weather-compensated controllers (WXE, AHE, AHD series), boiler controllers (KXD), differential controllers for solar and multi-energy systems (SGC), zone controllers (ZCE6), and constant temperature controllers (ACD), alongside wired and wireless digital room thermostats (RT1B, WT1B), motor actuators (AQD, AVD), and a full accessories range (sensors, communication interfaces, room units). The products incorporate Seltron's proprietary ED Constant Algorithm for precise temperature regulation and a self-heating compensation algorithm claimed to be unique in the market, with the SeltronHome IoT platform and Clausius BT mobile application providing remote monitoring, Bluetooth configuration, fuel-level alerts, and time-limited service access via the GWD3E Wi-Fi interface.

Seltron generates revenue primarily through hardware sales across controllers, thermostats, actuators, and accessories, supplemented by authorized servicing during and after warranty periods. The company operates a B2B go-to-market model: a dedicated online portal (b2b.seltron.si) serves business customers and partners, while distribution flows through a network of authorized installers, HVAC professionals, and industrial distributors across Slovenian, English, and German-speaking European markets. OEM partnership opportunities allow boiler and energy-system manufacturers to integrate Seltron control technology into their own equipment, providing a third commercial channel. Pricing is quote-based and not publicly disclosed. Customer segments include residential homeowners (via installers), HVAC professionals specifying and installing equipment, and OEM manufacturers embedding Seltron components. The company is privately held as a Slovenian d.o.o. (limited liability company) with no disclosed parent, institutional investors, or funding rounds.

Name

Seltron

Legal name

SELTRON družba za proizvodnjo, trgovino in posredništvo d.o.o.

Website

https://seltron.eu

Company type

Private

Founded year

1991

Operating status

Operating

Headcount range

51–100 employees

Short description

Seltron d.o.o. is a Slovenian manufacturer, founded in 1991, of heating and cooling control products including controllers, thermostats, and actuators, serving residential, commercial, and OEM customers through a B2B partner network across European markets.

Ownership category

akta.pro rank

Product category

HVAC Heating Controls

NAICS

Automatic Environmental Control Manufacturing for Residential, Commercial, and Appliance Use (334512), Heating Equipment (except Warm Air Furnaces) Manufacturing (333414)

SIC

Auto Controls For Regulating Residential & Comml Environments (3822), Steam & Air-Conditioning Supply (4961)

akta.pro primary industry

Building Thermal Controls & Building Management Systems (HVAC BMS) (IMAHAKAK)

akta.pro secondary industries

HVAC Controls & Optimization (Smart Thermostats, VAV, Chillers/Boilers Controls) (BPABAGAB), Smart Thermostats & HVAC Controls Retail (CRAIAMAC)

Keywords

• Heating controllers
• Room thermostats
• Motor actuators
• HVAC controls
• Weather-compensated regulators

Headquarters

HQ city

Maribor

HQ country

Slovenia

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Heating Controllers and Regulators: Sale of weather-compensated controllers, differential controllers, zone controllers, and boiler controllers for residential and commercial heating systems.
2. Room Thermostats: Sale of wired (RT series) and wireless (WT series) digital room thermostats with smart device connectivity for temperature regulation.
3. Motor Actuators: Sale of AQD and AVD motor actuators for controlling ball valves and mixing valves in heating and cooling systems.
4. Accessories and Sensors: Sale of supplementary products including temperature sensors, communication interfaces, wireless connection modules, and power supplies.
5. Professional Services: Servicing of equipment by authorized SELTRON service department, both during warranty period and post-warranty.

Go-to-market motion1 record

Distribution channels3 records

Marketing channels5 records

Core offering

Seltron d.o.o. manufactures and sells heating and cooling regulation products, including weather-compensated controllers, boiler controllers, differential controllers, zone controllers, digital room thermostats (wired and wireless), and motor actuators for HVAC applications. The company offers a complete ecosystem with accessories such as temperature sensors, Wi-Fi communication interfaces, and the SeltronHome/Clausius remote control platform for energy-efficient residential and commercial heating and cooling management.

Product overview

Seltron is a Slovenian manufacturer of heating and cooling control products organized into several product categories: (1) Controllers/Regulators including weather-compensated controllers (WXE, AHE, AHD series), boiler controllers (KXD), differential controllers for solar systems (SGC series), zone controllers (ZCE6), and constant temperature controllers (ACD); (2) Room Thermostats including wired (RT1B) and wireless (WT1B) digital models with Bluetooth connectivity and smart features; (3) Actuators including compact (AQD) and standard (AVD) models for valve control; (4) Accessories including the GWD3E Wi-Fi communication interface for SeltronHome platform connectivity, temperature sensors, and zone control accessories; (5) The SeltronHome/Clausius app platform for remote monitoring and control. The product portfolio forms a complete ecosystem for energy-efficient residential and commercial heating/cooling management.

Differentiator

Problem solved

Functional benefit

Brands

• SeltronHome: Smart heating control platform and remote management solution for heating systems
• Clausius BT
• Clausius

Products and services

• WXE Series Weather-Compensated Controllers

Quantifiable outcome

• Energy savings from accurate temperature control: every degree of deviation from desired temperature increases heating costs by approximately 6%

Segments3 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature6 records

Scale indicators3 records

Recent moves6 records

Expansion highlights5 records

Emerging players

• tado°: tado° offers smart thermostats and connected heating controls for European homes, competing with Seltron's RT/WT series and SeltronHome platform at the consumer/smart-home end of the market.

Direct peers

• Salus Controls: Salus Controls designs and manufactures heating controls, thermostats, and actuators similar to Seltron, with a comparable European installer-channel B2B model and product family breadth.
• Honeywell Home (Resideo): Resideo's Honeywell Home portfolio covers programmable and connected thermostats, boiler controls, and zoning products—directly competing with Seltron's weather-compensated controllers, room thermostats, and zone controllers.
• Danfoss: Danfoss Heating segment is a global leader in hydronic heating controls, electronic thermostats, and actuators—directly comparable to Seltron's WXE, AQD, and RT/WT thermostat lines for residential and commercial heating regulation.
• IMI (IMI Hydronic Engineering): IMI provides balancing valves, control valves, and actuators for hydronic heating systems—comparable to Seltron's AQD/AVD actuator and valve combination products.
• FRIWA / Möhlenhoff: Möhlenhoff manufactures heating actuators, room thermostats, and building HVAC control components—closely comparable to Seltron's AQD/AVD actuators and RT/WT thermostat families in target segments and channel.

Broad incumbents

• Schneider Electric: Schneider Electric's EcoStruxure Building platform encompasses HVAC controls, thermostats, and energy management overlapping with Seltron's portfolio, but at a much broader commercial/enterprise scale.
• Siemens Smart Infrastructure: Siemens offers comprehensive building automation and HVAC control systems (Synco, Climatix) that overlap with Seltron's BMS-adjacent controllers, though Siemens operates at a much larger scale and broader portfolio.
• Watts Water Technologies: Watts offers heating controls, valves, and actuators through its EMEA operations (formerly Watts Industries), with overlapping portfolio in hydronic control and mixing valve regulation.
• Bosch Thermotechnology: Bosch Thermotechnology produces heating boilers and integrated control systems (e.g., EMS, Logamatic) that overlap with Seltron's boiler controller and weather-compensated regulator offerings, with deeper OEM integration.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks5 records

Key highlights7 records

Customer concentration

• Facebookfacebook.com/profile.php
• LinkedInlinkedin.com/company/seltron-d.o.o.

Compliance3 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 Seltron