The VASNER Thermostat Guide
What is a Thermostat and How Does it Work?
A thermostat is used to measure the current room temperature, compare it to a predefined target temperature and adjust the heat produced by a radiator so that the current value and the desired temperature remain the same over time. On the one hand, this requires a temperature sensor that checks the prevailing room temperature at regular intervals, and a regulator that adjusts the heat produced accordingly. The temperature regulator always intervenes when a difference between the current temperature and the target temperature is detected. This occurs either when the chosen target temperature is adjusted or when the room temperature changes. Often the sensor and regulator are integrated into a single device when you buy a thermostat.
Which Thermostat Should I Buy?
Conventional thermostatic valve / heating valve: Conventional radiator thermostats consist of a lower part with a valve and an adjustable thermostat dial. The integrated temperature sensor determines when and to what extent the heating valve is opened. If the room temperature is higher than the set desired temperature, the liquid or gas inside the temperature sensor expands. This causes the valve to close and stops or limits the supply of hot water to the radiator to stop the heating process. When the room temperature is too low, the liquid inside the thermostatic valve contracts and heating continues. As soon as the set target temperature is reached, the heating valve is closed again. The valve can also be controlled by turning the thermostat knob. If you turn it to the right towards setting 1 from a higher heating level, this will screw the thermostat knob closer to the valve to reduce the valve opening and lower the desired temperature. Turning it to the left again towards heating level 5 opens the thermostatic controller and more heating water enters the radiator for higher heating power.
But what do the numbers on the adjustable thermostat knob stand for? As a rule of thumb, the first heating level stands for a target temperature of about 12°C. Turning the dial to a higher level will then increase the desired temperature by 3 - 4°C each step, so that setting three produces a room temperature of about 20°C. With conventional oil and gas heaters, the heating valve must be replaced after a certain amount of time. This is because wear and tear lead to a loss of accuracy and efficiency in temperature control.
Buy a programmable thermostat: Instead of a conventional thermostat, you can buy a digital thermostat. A programmable radiator thermostat with a timer allows you to set individual heating programs according to the day of the week and time of day. Once set, the heating process takes place completely automatically. For example, the temperature is lowered when you are at work or asleep at night, and raised again in time for the morning and evening. Depending on the make and model, the original heating control knob is unscrewed and replaced by the programmable thermostat. With other models, the smart thermostat is simply slipped over the conventional regulator. When using simple programmable thermostats, the heating programs are set directly on the radiator thermostat. However, it is more convenient to buy a thermostat that has a separate transmitter with a display or can even be controlled via a WiFi smartphone app. On the one hand, these are easier to operate, on the other hand, according to the chip.de digital thermostat test, the programming of many cheap thermostats is lost when changing the battery. The programmable thermostats for infrared electric panel heaters are constructed differently. You can buy them either as a plug-in thermostat for sockets or for inconspicuous flush-installation.
Buy a socket thermostat: Combined with electric infrared panel heaters, socket thermostats enable a simple and flexible temperature control. The radiator thermostat is simply inserted between the power plug of the device and the socket and is immediately ready for operation. You can purchase a socket thermostat with a timer to allow for a precise programming of automatic heating sequences as well as spontaneous, manual temperature changes.
Buy a radio thermostat: Wireless radio thermostats are sold in sets with a thermostat transmitter that can control one or more receivers. This is especially practical if the heating system is not freely accessible (example: underfloor heating) or if a room is heated by several radiators simultaneously. In addition, the room temperature can be measured more accurately if a programmable thermostat with a separate sensor is used instead of installing a normal digital thermostat with an integrated sensor directly on the heater. The communication between the transmitter and receiver of rado thermostat systems is wireless and takes place via an electrical signal. For conventional heating systems there are valves that can be opened and closed by a mini actuator, and for (infrared) electric heaters there are flexible socket receivers and concealed in-wall receivers that control the power supply to the heating panels.
Where Can I Buy a Thermostat?
The Product Range in VASNER‘s Online Shop
In VASNER's online shop you can find various products and accessories for infrared heating as well as various other items for your home and backyard. VASNER thermostats can be used to control the electric heaters of other brands as well. Not just VASNER heating panels. You can choose between different digital thermostats, like radio thermostats or socket thermostats. Each radio thermostat for electric infrared panel heaters is sold in a set with a transmitter and a receiver. You can also buy the individual components separately in our thermostat shop. If you purchase directly from VASNER, you can choose from a wide range of products and benefit from quick shipping and a free delivery within Germany if your shopping basket has a value of 49,- € (EUR) or higher. A purchase value of 99,- € is required for free shipping to Austria, NL, LU, BE. If you find new products that you like, you are welcome to add them to your watch list first until you have collected enough information for your purchase. Here on VASNER's homepage you can read various informative guides and articles to help you find the right product for your home. Alternatively, you can always ask VASNER's service team questions during business hours. We are happy to consult you free of charge: +49 (0)5246 - 93 55 625.
You Can Buy the Following Thermostats in VASNER's Online Shop:
VASNER VFTB digital radio thermostat set for electric / infrared heating panels: The VFTB thermostat system consists of a transmitter with a display, which shows the current temperature as well as the chosen target temperature. In addition, the thermostat receiver of your choice is included. You can choose between a flexible socket receiver and a concealed flush mounted receiver. Each component is designed in the colour white to allow you to control the temperature as discreetly as possible. With just a few buttons, you can easily program an individual heating sequence. 7 weekly programs and a maximum of 6 automatic temperature changes per day are available.
Features of the VASNER VFT35 wireless thermostat set: Includes a digital thermostat transmitter with a display and a practical socket receiver. The electronic thermostat set in an elegant white design allows for up to 4 automatic temperature changes per weekday. With the help of both VASNER radio thermostat sets, manual temperature adjustments can also be made spontaneously, and multiple thermostat receivers can be controlled at the same time. The perfect addition to your smart home system, if you would like several electric heaters to maintain a certain temperature together.
Product description - VASNER VUT35 universal socket thermostat: Thanks to its practical plug-and-play principle, the flexible socket thermostat allows for a quick and easy control of your infrared electric heater. Simply buy the thermostat, insert it between the power source and your radiator and enjoy cosy warmth. With its extensive 7-day programming function and simple operation via 5 buttons, you will immediately notice the VASNER quality difference.
Where Should I Mount my Thermostat?
Since the functioning of thermostats relies on a correct measurement of the room temperature, the positioning of the temperature sensor must be well thought out. Because if the temperature is estimated too high or too low by the room thermostat, the efficiency of the heating process decreases and in turn the room climate isn't quite as cosy. The following points should therefore be considered when choosing the location of your thermostat:
The temperature sensor must not be covered: If the thermostat transmitter is mounted on the wall, make sure that it is not covered by a heavy curtain or other furniture. Otherwise heat may build up around the transmitter causing it to measure a higher temperature. In such cases the heat output is reduced too early and a pleasant room temperature is never achieved.
Do not place near windows or doors: If the purchased room thermostat is placed under a windowsill or in doorways where draughts often occur, an inaccurate temperature measurement will also be made. The room is perceived to be colder than it really is and the radiators continue to operate unnecessarily, even if the desired target temperature has long since been reached.
Mounting height: The ideal mounting location for a temperature sensor is at a height of 1,5 m on the wall in the main living area. However, mounting on an outside wall should be avoided so that the room temperature is not considered to be too cold, causing the radiators to produce too much heat.
Buy a Digital Thermostat to Heat Correctly
Tips for Efficient Warmth
Save heating costs with a programmable thermostat: The use of an intelligent, programmable thermostat with a built-in timer can make your heating process more efficient. In multiple digital thermostat tests it turned out that the devices can help you save around 10% on heating costs. You can buy a digital thermostat and adjust it individually so that it automatically reduces the room temperature at night and during working hours. Whenever you are at home, however, you can enjoy cosy warmth. Before work, at the end of the day and on weekends, the smart thermostat automatically creates an ideal room temperature. Here are further tips from the Federal Environment Agency on how to heat as efficiently as possible:
Close the shutters: Directly after dark you should close all shutters and curtains in your house. This will reduce heat loss through your window by up to 20%. However, choosing the right blinds is also important. Electric roller shutters should have a low standby consumption. Whereas with old, manually operated roller shutters the shutter box often needs to be insulated more heavily. If these points are taken into account, the thermostat can be lowered a little bit more at night, so you can save heating costs and energy. Because for each degree Celsius less you save around 6 - 8% in heating energy.
Do not cover your heaters: Radiators should never be covered by furniture or curtains, because then their heat cannot be distributed evenly throughout the room and a lot of energy is wasted. Therefore, curtains should not reach all the way down to the heater and furniture should be placed at a sufficient distance.
Proper ventilation: Even when outside temperatures are low, you need to air each room regularly - and correctly. Windows that are constantly open a crack lead to the walls cooling down and condensation or even mould forming. In addition, more energy needs to be used and the thermostat needs to be raised even higher to restore a comfortable temperature. It is therefore important to ventilate properly for about 10 minutes in the morning and evening (depending on the season, humidity etc.). On average, the inhabitants of a 4-person household release around 12 litres of moisture into the air every day. So even the perfect thermostat setting will not help you if you do not ventilate regularly.
Distance between furniture and walls: Your furniture shouldn't only be positioned far enough away from the heating system. But also from the wall. Otherwise moisture can accumulate in this area without sufficient air circulation, increasing the risk of mould and mildew.
Use all radiators: When trying to save energy and heating costs, some people tend to switch off the heaters in rooms they rarely spend time in. However, this is not a good idea for several reasons. On the one hand, this results in a poor heat distribution and the other radiators are put under even greater strain. Thus, the heating process is highly inefficient. Another reason why the thermostat should never be set below a certain basic temperature is to reduce the risk of mould. If the room temperature drops below 17°C, condensation and mould on the wall can occur. Even if the air from warmer rooms reaches colder rooms, it suddenly cools down and gives off moisture to the walls. For this reason, the room thermostat should never be turned down completely during the cool season.
Adjust Your Programmable Thermostat Properly to Enjoy an Ideal Room Temperature
As mentioned above, you can buy a programmable digital thermostat to save approximately 10% on heating costs. A smart thermostat automatically lowers the room temperature when you are sleeping, at work or on holiday. However, the temperature should never be set below a certain point in order to avoid an increased risk of mould. In addition, your heating system will otherwise require too much energy in order to restore an optimum room temperature. Most thermostat systems on the market are equipped with frost protection, which means that the temperature never falls below 6 degrees to avoid damage to your pipes. But to prevent the formation of mould, you shouldn't only rely on this setting in the long run. It is best to set your thermostat to a temperature above 17°C - even when you are at work. However, the recommended temperature for when you are at home is different for each room of your house. Because the ideal climate depends on different factors such as humidity and room usage. The following values are recommended by the Federal Environment Agency:
- Living room: 20 – 22°C
- Bedroom: 17 – 18°C
- Kitchen: 18°C
- Bathroom: 22°C