Thank you for your message and interest in our PRIME Titanium. If i want to make it short: you can use Hybrid mode fan facing up or down. It won't shorten the PSU life as the sensor are made to start the fan when temperature/load require it. So fan up or down, it won't change anything. However, we ...

About your PSU, with a Titanium efficiency, you can let let your PSU with the fan facing upward. The heat released will be really low from the power supply, therefore you can use it like this in Hybrid mode. You can also use it with fan facing downward. In that case, PSU will start the fan if load ...