So I had bought 2 Rohnson R-019 TURBO and I wanted to buy 2 more but the price went up due to market shortage so I went for the one that I saw was a copy.

Externally they are the same (same button dimensions, etc.) with minimal differences, and I can say that Borgmann appears to be of better quality in details. However, internally you can see several differences, as well as in their use. Although the heat they produce is the same as well as the way they heat the space, I consider the R to be slightly better. In other words, for a price difference of 10-15 euros max, it's worth getting the R. If I were to give 5 stars to the R, I would give 4 to this one.

Differences:

- Internally, Borgmann does not have a separator to separate the resistance (heating) area from the electronic circuit like the R. In other words, a little further from the burning resistance, you can see the electronic circuit with its chips and cables, and you wonder when something from them will burn. They certainly withstand high temperatures, but it's not nice to see them like that.

- The difference in the thermostat open-close is 4 degrees in ambient temperature, not 2 like in the R. Perhaps the biggest disadvantage as you can't control it exactly as you want.

- I measured both devices with a wattmeter and there is a significant deviation downwards (50W-150W) in the wattage it shows (depending on which scale you have it on) in Borgmann, while in the R the deviation is much smaller.

- The fan of the B is of better quality and more powerful than that of the R, but what's the use since in both devices it doesn't automatically turn on and off when the heating turns on and off, so I always have it closed because most of the time it creates drafts of cold air.

- Each device produces a great amount of heat equivalent to 4-5 water radiators and the air they emit is quite warm-hot. Indeed, they can heat large spaces quickly.

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- Attention!!!
It dries the atmosphere quite a bit, especially on the high scale 2300.
If you use a dehumidifier, you will need to limit its use and if necessary, find a way to humidify the environment.
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For those who cannot calculate how much they will pay for electricity, things are simple:

If you have it at 2300 W and it turns on for example 8 hours a day (with the on-off), you will consume 2.3 x 8 = 18.4 kWh
If the cost per kilowatt-hour is 0.11€ (DEH), you will pay 18.4 x 0.11 = 2€ per day for the device.
If you don't have DEH but a cheaper company and the cost per kilowatt-hour is around 0.07€, you will pay 18.4 x 0.07 = 1.3€ per day.

In very cold weather (10 degrees outside and below), to have an indoor temperature of 21-22, expect it to be on for at least 16 hours a day, on-off, for a space of 25-30 square meters. All of this in a house with moderate to good insulation.
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Tips:
- First option: Have it on the high scale 2300W (especially in large spaces) so that it heats up the room quickly and turns off quickly (this way you have better economy and more warmth).
- Second option (ideal): You can have it permanently at 1,000W or 1,300W, with the fan running and the thermostat at 30+ degrees so that the heating never turns off. This way, a) it operates at low watts, b) you take advantage of the extra heat provided by the forced air circulation with the fan, c) you have a stable temperature in the room. With this operating mode, I consider the B to be better than the R due to the better fan. At 1000W for 24 hours of operation, we will consume 24KWh, for 12 hours 12KWh, etc.
- The thermostat functions more like a timer because it is located on the device and cannot measure the actual room temperature. The higher you set the temperature, the longer it stays on and the less it is turned off.
- Time how long it is on and off (usually it is set at a specific temperature and needs to be measured only 1-2 times) to know approximately how much consumption you will have.
- Place it in front of the largest external opening of the room (window, door, balcony door, etc.). It is better to keep the curtains closed, but be careful that the device is at a safe distance from the curtains (at least 25 cm).

Very beautiful heater, lightweight, quiet, has handles on the sides for easy transportation without getting burned, without corners so that children do not hit themselves. Be careful, it burns on the outside. Clear screen with a remote control that works perfectly. You can also hang it on the wall (does not include accessories). The fan only works if you have it hanging because it blows the hot air downwards. The room temperature indicator deviates 3-4 degrees from the actual temperature. Simply, if you want it to stop when it reaches, for example, 20 degrees, you set it to 24 degrees! It also has a timer if you want it to stay on for 1-24 hours. It smelled a little during the first half hour, only the first time I turned it on. It does not emit odors and the metals do not vibrate when it heats up or cools down (expansion-contraction). It reaches 20 degrees in a 25 square meter room (with an external temperature of 10 degrees) in 2 hours at 2300 watts. Of course, there are many factors that affect its performance! It has not been tested in lower temperatures yet. Now, how much electricity does it consume... you know the watts it consumes, and you know the price per kilowatt-hour! It is worth it for alternative heating.