I've been using this diesel heater for about a month now. Initially, I encountered error codes because the diesel line was bent during delivery, which prevented the engine from receiving fuel. After contacting customer support, they sent me a new fuel tank, but they shipped it via UPS, which charged me €11.
Vevor didn't inform me about these costs in advance, so I reached out to them again. After explaining the situation, they promised to refund the €11, which they eventually did.
Yes, the beginning was frustrating due to the broken fuel line and the extra €11 charge, but Vevor ultimately resolved the issue in a satisfactory manner.
Now, about the Bluetooth app: it’s awful. It technically works, but it’s designed for older Android versions, so if you have a newer phone, you have to jump through hoops to download the app because it’s not available in the app store. There are two different apps, and one of them, recommended by the Vevor guide, doesn’t even work with my heater model.
The app is ugly and lacks functionality—you can't even set a timer for the heater. With my specific heater model, I can’t adjust the minimum or maximum fan speed, nor can I control the fuel pump speed. I've seen many videos of older heater models where people use these settings to optimize performance, but I don’t have that option, which is disappointing.
Additionally, the thermostat is miscalibrated. I had to adjust it by 9 degrees to match the actual temperature. Initially, I couldn’t use the automatic mode because the heater always displayed a higher temperature than the room. For example, when it was actually 10°C inside, the heater showed 19°C. After adjusting it by 9 degrees, it’s now accurate, but this shows that the factory settings are off. It’s frustrating that I can’t change the fan or fuel pump speed through a developer menu to properly optimize the heater.
That said, I’m now satisfied with the heater's performance overall.
Virgil 
johnny 
Geoffrey 
