Radiator Valves or Thermoelectric Actuators: How to Regulate Heating?

Choosing the right control elements is crucial for efficient, economical, and trouble-free heating. However, many people are not familiar with this issue and make unnecessary mistakes when selecting. Find out the difference between thermostatic valves and thermoelectric actuators and which solution is suitable for you.

How do radiator thermostatic valves work and when are they used?

Thermostatic valves on heating systems are known to almost everyone who has radiators at home. The valves regulate the flow of heating water in radiators by opening and closing the radiator valve, based on the air temperature in the room and the desired temperature you set. They maintain a stable temperature even in the event of fluctuations, for example, during cooking or when the space is sunlit. It is a simple yet effective way of regulating heating, which brings you significant savings and higher thermal comfort.

Radiator valves are controlled either manually by turning or digitally. With manual thermostatic valves, the temperature is set on a numerical scale, which is a less precise way of regulation. On the other hand, manual heating valves do not require electrical energy and are cheaper. With digital thermostatic valves, you can set not only the exact desired temperature but also a heating schedule, with the valve maintaining the optimal temperature throughout the day completely automatically. Wifi digital thermostatic valves can also be controlled remotely via a mobile app, and some have smart features for optimizing heating.

Radiator valves are easily installed directly on radiators in individual rooms. Their main advantages are low cost and the ability to directly regulate the temperature in a specific room. However, thermostatic valves are not recommended for installation on underfloor heating because in this case, the valve does not measure the temperature correctly, and therefore the regulation is inaccurate.

Digital Thermostatic Valve Honeywell

What are thermoelectric actuators and where are they used?

Thermoelectric actuators are electrically controlled heating regulation elements. They automatically ensure the opening, closing, and regulation of the flow of the operating substance in heating and cooling systems based on a control signal, usually from a room thermostat.

They are most commonly used for underfloor heating, where they ensure even heat distribution in different zones, and thus precise zonal regulation. Although they can also be installed on heating bodies, thermoelectric actuators do not work accurately on radiators – they are affected by the radiant heat.

Thermoelectric Actuator Danfoss

Main Differences Between Thermostatic Valves and Thermoelectric Actuators

Radiator valves and thermoelectric actuators are two different elements for regulating heating, which differ in their purpose and functions. Interchanging them leads to improper functioning of the heating system and unnecessary energy waste.

Consequences of Incorrect Use of Heating Control Elements

At BOLA, we recommend using thermostatic valves only on radiators and thermoelectric actuators on underfloor heating manifolds to ensure reliable and accurate operation of the heating system. A thermoelectric actuator on radiators does not work accurately due to the influence of heat from the radiator on the thermocouple, leading to insufficient closing or opening of the valve.

How to Choose the Right Regulation for Your Heating System?

The main criterion for selection is the type of heating system. Thermostatic valves belong on radiators, and thermoelectric actuators on underfloor heating. Equally important is the compatibility of control elements with your heating system – in the case of radiator valves, it is mainly the thread size that must fit the thermostatic radiator valve, or it is necessary to purchase a suitable adapter. In the case of thermoelectric actuators, focus on the connection size and power supply.

For maximum comfort and savings, choose control elements with remote control capability and the highest possible regulation accuracy. In our offer, you will find quality thermoelectric actuators and thermostatic valves for heating from leading world manufacturers Danfoss, Honeywell, and Siemens. We will be happy to provide you with expert advice on choosing the ideal solution for your needs.

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