Review on 🔥 Efficient 110V Mini Air Heating PTC Thermistor Heater with Fan - Constant Temperature Insulation (12V/250W) by Yvonne Mok

I was going to use it as a permanent heater for a special fermenting chamber that currently uses ceramic heating bulbs but after installing and running it for the first 20 minutes at 95F the installation failed as follows: 1. Fan2 stopped working. Heating continued and the plastic case heated up, it felt very hot3. The smell of plastic is stinky. Removed from fermenter box, let cool and tested again on a desktop, fan and heater working again, installed a second time and worked another 10 minutes, same 3 things above happened again. In any case, I might be able to get it working by separating the fan with metal spacers, but the smell is unacceptable for the food industry, I'm just worried that the smell might add a different flavor to the food.