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This section provides an overview for electronic thermostats as well as their applications and principles. Also, please take a look at the list of 16 electronic thermostat manufacturers and their company rankings. Here are the top-ranked electronic thermostat companies as of April, 2025: 1.Electronic Controls Corp. (ECC), Div. of Selco Products, 2.COMPARATO NELLO S.R.L., 3.West Control Solutions.
Table of Contents
An electronic thermostat is a device that can control a load according to the measured temperature.
They are very reliable because they operate with high sensitivity and precision. Electronic thermostats are equipped with a thermistor for temperature measurement and a relay for load drive. A control circuit in the electronic thermostat measures the temperature and drives the load. By using a heater or cooler as the connected load, the temperature can be regulated, automating time-consuming temperature control and reducing electricity and other costs.
Electronic thermostats are used to control internal system temperatures by connecting heaters, coolers, and other heating and air conditioning equipment because they can turn connected loads on and off based on the detected temperature.
This allows for 24-hour monitoring and control while maintaining the set temperature, thus reducing power costs.
They are used in a wide range of environments where temperature control is required, such as in the fields of agriculture and air conditioning.
The electronic thermostat consists of a thermistor, relay, and control circuit.
The control circuit and thermistor measure the current temperature, and the control circuit and relay turn the load connected to the electronic thermostat on and off. The thermistor is an electronic component with a characteristic of resistance value changing with temperature change. The control circuit uses this relationship between temperature and resistance to measure temperature.
A relay is an electronic component formed by a coil and a switch. The magnetic force generated by passing current through the coil is used to switch the switch.
The control circuit turns the current in the coil in the relay ON/OFF by comparing the temperature measured using a thermistor with a preset temperature. The switch in the relay is turned on and off when the coil current is turned on and off. By connecting a load to the relay switch side of the electronic thermostat, it is possible to control ON/OFF according to the temperature.
The points to consider when selecting an electronic thermostat are as follows.
The contact capacity is the current consumption of the load that the electronic thermostat can drive. The contact capacity varies from electronic thermostat to electronic thermostat, and the value depends on the relay in the electronic thermostat. The electronic thermostat should be selected so that the current consumption of the load to be controlled ON/OFF is not higher than the contact capacity rating of the electronic thermostat. The relay in the electronic thermostat may break down if the ON/OFF load exceeds the contact capacity of the electronic thermostat.
The temperature range that can be measured differs depending on the electronic thermostat. The measuring temperature range depends on the thermistor in the electronic thermostat. The electronic thermostat should be selected according to the temperature range to be measured. Some electronic thermostats have interchangeable thermistors.
Electronic thermostats have two load operating patterns: heating control pattern and cooling control pattern. In the heating control pattern, the load can be turned ON when the current temperature is lower than the set temperature. The cooling control pattern turns the load ON when the current temperature is higher than the set temperature. Some electronic thermostats can switch the load operation pattern with a switch.
There are two methods for setting the temperature at which the load connected to the electronic thermostat is turned on or off: analog setting method and digital setting method.
In the analog setting method, the operating temperature is set by turning the jog dial on the electronic thermostat. In the digital setting method, the operating temperature is set while viewing the electronic thermostat's display. The digital setting method is easier to use but costs more than the analog setting method.
*Including some distributors, etc.
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Selco Products was founded in 1958 and is headquartered in Reno, Nevada. The ISO 9001:2008-certified company is a global manufacturer of customized electronic components. The company serves several markets including medical, HVAC, electronics, and aerospace OEMs and end-user companies, leveraging JIT delivery, Kansan, and engineering support. Electronics offerings include thermistors, temperature controls, panel instruments, and signal converters. Non-electronics include buttons, knobs, and other accessories used in digital and analog electronics controls.
VDH is a manufacturer of measurement and control instrumentation and systems that was established in Drenthe, The Netherlands, in 1977. The company’s products include piezoresistive, ceramic, and capacitive pressure sensors fouse in a range of industrial operations. It also offers temperature sensors, relative humidity sensors, and controllers for managing physical parameters in cooling, drying, or ripening process operations. The company is certified to ISO 9001 and ISO 14001 standards, and operates internationally, with production facilities in the Netherlands and China.
Comporato Nello S.R.L, established in 1968 and headquartered in Liguria, Italy, is a manufacturer of motorized valves, hydraulic interface units, and components for heating plants. The company offers a wide range of products, including a Sintesi 2-way ON/OFF motorized valve, FUTURA HP hydraulic interface unit, and strainers. It also offers Diamix PR and Compamix PR mixing/thermoregulating motorized valves and manual interception valves. Its motorized valve can help reduce energy costs for heating systems. Additionally, the company has achieved ISO 9001:2015 certification. It serves the heating and plumbing industries.
S+S Regeltechnik is a manufacturer of measuring instruments and sensors for control engineering applications established in 1997 in Nuremberg, Bavaria, Germany. The company’s product lineup includes its Hydrasgard brand temperature and humidity sensors for indoor climate control, its Thermasreg brand passive and active temperature sensors for temperature analysis, and its Rheasgard brand airflow and differential pressure sensors for regulating ducts or filters. The company’s products are mainly used by clients in the renewable energy and industrial processing sectors.
West Control Solutions, established in 1994 and based in Brighton, East Sussex, is a manufacturer and supplier of products for process control and automation. The company's product range includes Single Loop Controllers, Multi-loop Controllers, Limit Controllers, Process Indicators, Recorders, and Transmitters. These products play a pivotal role in ensuring precision and efficiency in automation machinery manufacturing. Serving industries such as customized controller solutions and distributed I/O networks. The company specializes in Temperature Controllers, Thyristors and solid state relays, Controllers with integrated data logging, and Limit controllers.
Quanta SRL, founded in 1991 and headquartered in Firenze, Italy, is an integrated electronic device designer and strategic partner manufacturer. The company's core products include thermal transformers, industrial automation control components, and air quality monitoring systems. It also produces biomedical freezer control systems, thermoregulatory units, and temperature control units. These products are used for various applications by food processing plants, medical device manufacturers, and automotive manufacturers. The company's services include the supply of feasibility studies, custom product production, and supply-chain management.
Honeywell, founded in 1906, in Wabash, Indiana is manufacturer of automotive parts, building technologies, and performance and safety materials for aerospace, The company's product portfolio includes electronic guidance systems, cockpit instrumentation, lighting, automotive parts, and primary propulsion and secondary power turbine engines. The company serves industries such as Oil and Gas, Aerospace and Defense, Automotive and Transportation, Construction, and Power Generation. Their headquartere is located in Carolina and they have global sales offices and distributions channels.
Sauermann Group, established in 1976 and headquartered in Belgium, is a global manufacturer and supplier specializing in the detection, measurement, and control of indoor air quality (IAQ). The company’s product portfolio includes condensate removal pumps, measuring instruments, and transmitters, serving industries such as HVACR, manufacturing, and air quality management. The company’s two main brands are Sauermann for condensate removal pumps and Kimo for instruments aimed at measuring and monitoring air parameters. With locations in France, China, and the U.S.A, Sauermann products and services are backed by multiple testing and calibration laboratories worldwide, and hold ISO 17025:2017 certification.
Omron Corporation, started in 1933 and headquartered in Kyoto, Japan, is a manufacturer of automation components, equipment, and systems, and it developed the first contactless proximity switch in 1960. It has four domains, including industrial automation, electronic components, healthcare, and social systems, and it provides products and services in around 120 countries and regions. Some of its products include microsensing devices, access control systems, industrial robots, surveillance cameras, and blood pressure monitors. In 1971, it developed the first online cash machine, and in 1972, it established Japan’s first welfare factory.
ELKO EP HOLDING, SE., established in 1993, and located in Holešov, Czech Republic, is a manufacturer, distributor, and supplier of electronic equipment for residential, office, and industrial automation. The company offers a range of products including time relays, time switches, dimmers, controlling & signaling units, and thermostats, which serves in industries such as resindential, commercial, industrial, infrastructure, and transportation. Its products are used for efficient control and management of various electrical functions.
Fox S.r.l. is an Italian manufacturer and distributor of industrial fans and ventilation systems that was established in Bologna in 1977. The company’s product lineup includes positive displacement and dynamic blowers, as well as centrifugal, axial, and mixed flow industrial fans. It also offers ventilation systems for filtration, cooling, and air treatment. The company’s products are commonly used in industrial manufacturing and processing facilities, as well as in the food and beverage industry. It is certified to ISO 9001:2015 and ISO 14001:2015 standards.
JUMO GmbH was established in 1949 in Fulda, Germany. The company is a system provider for individual sensor and automation solutions, creating components for measuring as well as products for registration, monitoring, control, and automation. Through these, the company serves a wide range of industries such as food and beverage, railway, shipbuilding, and water treatment with both components and complete solutions. The company’s product segments include Temperature, Pressure, Flow, Liquid Analysis, and Level. The company offers many services to customers including calibration, field service, repair service, and maintenance contracts.
Ranking as of April 2025
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | Electronic Controls Corp. (ECC), Div. of Selco Products |
12.3%
|
| 2 | COMPARATO NELLO S.R.L. |
11.1%
|
| 3 | West Control Solutions |
11.1%
|
| 4 | SNDC |
8.6%
|
| 5 | sauermann |
8.6%
|
| 6 | Fox S.r.l. |
7.4%
|
| 7 | ELKO EP HOLDING, SE. |
7.4%
|
| 8 | VDH Products BV |
6.2%
|
| 9 | heater zone |
6.2%
|
| 10 | QUANTA S.r.l. |
4.9%
|
Derivation Method
The ranking is calculated based on the click share within the electronic thermostat page as of April 2025. Click share is defined as the total number of clicks for all companies during the period divided by the number of clicks for each company.Number of Employees
Newly Established Company
Company with a History
*Including some distributors, etc.
*Including some distributors, etc.
| Country | Number of Companies | Share (%) |
|---|---|---|
|
Italy
|
2 | 20.0% |
|
Germany
|
2 | 20.0% |
|
United States of America
|
1 | 10.0% |
|
Netherlands
|
1 | 10.0% |
|
United Kingdom
|
1 | 10.0% |
|
Czech Republic
|
1 | 10.0% |
|
China
|
1 | 10.0% |
France
|
1 | 10.0% |
249 products found
249 products
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