Optimization of heating costs - why is it worth buying an external temperature sensor?

Added: Thursday, 6/22/2023


Modern heating control systems allow for significant cost reductions through better temperature control in the building. Still few people know that they can be optimized by installing an external temperature sensor. Accurate measurement of outdoor weather conditions allows for even greater reductions in central heating and hot water bills. How it's working? Check below and see for yourself that it is worth adding such a sensor to your installation!

yellow thermometer against the sky

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What is an external temperature sensor and how does it work?

Termet outdoor temperature sensor An electronic device, often called a "weather forecaster", is placed outdoors to read basic air parameters. In addition to temperature, the sensor can also indicate the level of humidity or atmospheric pressure. Digital models are based on physical properties, which allows for very accurate measurements in real time. Then they are sent, most often via radio, to the main controller. In addition to a heating boiler, it can also be a home weather station.

It is worth noting that the indicated result is not influenced by the heating of the temperature sensor . In the case of standard mercury or alcohol thermometers mounted outside the window or at the entrance to the house, the result may vary by up to 20°C due to heating by sunlight. Therefore, in their case, the place of installation is of great importance. Digital models of external temperature sensors, in turn, can be mounted virtually anywhere. Battery power and resistance to rain or sunlight ensure the high durability of the device as well as the accuracy of the readings obtained.

Use of external temperature sensors

When is it worth choosing an external temperature sensor?

  • Complement to home weather stations. Danfoss ESMT Pt 1000 outdoor temperature sensor for wall mounting Without leaving your home, you can find out what the conditions are like outside. Reading humidity and pressure also allows you to predict rainfall, which is also a very useful function.
  • Real-time heating control. A heating system without an outdoor temperature sensor can work quite efficiently and perform well. However, modern controllers allow for even greater savings. Based on outdoor temperature readings, they create a heating curve, on the basis of which the optimal boiler temperature is determined. Instead of a constant setting of 65°C, the heat level on the stove changes depending on the outside conditions. Thanks to this, the heating operates in the most favorable temperature range.
  • An external thermometer will also be useful when using several methods to heat domestic water. Do you have solar water systems installed? Do you use a boiler during winter? And do you have an additional electric heater to supplement hot water in unfavorable weather conditions? The external temperature sensor together with the adaptive controller allows you to predict the effectiveness of each component to determine the optimal way to heat hot water.

The purchase of an electronic outdoor thermometer therefore brings specific, tangible savings for the entire household. But which model of this device will work best?

Which outdoor temperature sensor model should I choose?

Wolf BM-2 weather module with external temperature sensor, white Which outdoor temperature sensor will work best? It is difficult to answer this question unequivocally

The first of them is a small outdoor thermometer CFT482 , characterized by small dimensions and very simple installation. A large range of measured temperatures, from -40°C to 60°C, works well in our climate.

The slightly largerESMT Pt 1000 outdoor temperature sensor can be installed on the wall. It is slightly larger, but looks very aesthetic. It also has a high IP54 resistance class, which makes it work well even in the most difficult working conditions.

We also have something for people looking not only for a sensor, but for the entire controller. The BM-2 weather module includes an external sensor with excellent parameters.

As you can see, although the temperature sensor has a simple structure, you can find many models with other advantages. You don't know which one will work best for you? Contact us by phone or e-mail and we will be happy to advise you what you should pay attention to in order to enjoy a well-functioning heating system for many years.

Check temperature sensors at the Onninen wholesaler