You shouldn't just clean the dust filter when using a dryer‼️ I forgot what the technician told me at first, but then a notification popped up for the heat exchanger cleaning, so I opened it up. Oh my goodness... there was so much dust accumulated. It wasn't just ordinary dust; it was stuck on and hardened, so it wasn't easy to peel off. I thought I only needed to clean the visible parts, but if you use a dryer at home, please make sure to clean the heat exchanger as well! I was shocked by what I saw this time, so I plan to check it regularly from now on. If you use a dryer, don't look it up later; save this right now and check it! #DryerCleaning #살림꿀팁 #열교환기청소