Hey my friend, I myself have a Mars Hydro TS 600 which is fanless but had 3 cheap fixtures all with fan before. First of all, they produce heat nonetheless, the fan is basically just cooling the LEDs themselves so they can run at higher power (esp. china ones) and last a bit longer. The same light with and without fan will produce the same amount of heat. Every fan just moves air around but doesnt cool it. If your air doesnt get exchanged fast enough its gonna jam up and heat up anyways.
In essence, it doesnt matter if the light has a fan or not, it produces the same amount of heat. Additionally, fans are very noisy in most cases, keep that in mind aswell.
When I had serious heat problems during my first grow, it got around 30 - 32°C over the day. The plant adapted and didnt have problems with it, but I would recommend to try and get a new inline fan as intake fan and try to suck in fresh, cooler air from outside or at least another room if possible.
Hope that helps, feel free to contact me if you have other questions :)