Spent my Saturday pulling apart my GE combo and finally understand the damp filter thing

My GE Profile unit started sounding like it was struggling, not just a loud hum, but a definite change in the cycling pattern. I figured the blower motor was failing, but after looking closer, the performance drop was definitly linked to how the heat was moving. I hadn't cleaned the secondary filter housing on the condenser side, only the main one. It had a thick, greasy layer of dust and pet hair that had settled right near the fan housing. It was a mess. After carefully pulling the panel and using a shop vacuum to suck out all that accumulation, the sound imediately quieted down. The drying time also improved by about fifteen minutes on my last few cycles. It really showed me that the fine particulate matter gets lodged in the channels leading into the condenser, not just the obvious lint traps. It is a maintenace headache to get those small crevices clean, but my unit feels much more efficient now that the airflow isn't restricted by that buildup.

My experiance with the unit wasn't related to lint buildup behind the screen, but more about the external intake design. I noticed that after about six months of using my GE Combo for medium loads, the unit started vibrating much more than it used to. It sounded like the whole drum was out of balance, even though the weight distribution seemed fine. I figured the internal parts were failing, but when I checked the back of the machine, I realized the wide, ussually unobstructed air intake vents were partially clogged with dust and some old dryer exhaust particulate. It looked like maybe a quarter inch of gunk was resting across the mesh. This restricted the airflow dramatically. Since the blower motor was fighting for air, it struggled to maintain proper cycle time. I carefully cleaned those rear vents and the whole shaking issue vanished immediately. It seems like even a minor blockage outside the main access panels can significantly impact how efficiently the heating elements cycle. It makes you think that maintenance goes beyond just the front filter, expecially on these all-in-one models.

All this talk about lint and grease is important, but you gotta watch the seals and hoses too. You’d think these combos were meant to last forever, but the constant expansion and contraction in the ductwork usually starts taking a toll. I had an old one where the internal gaskets started drying out and failing, and the heat just wouldn't transfer right even when the air intake was perfectly clear. It felt like the heat was just venting out instead of being moved properly through the drum. Sometimes the best fix isn't cleaning, it's just replacing the old rubber seals before the whole thing starts burning out.

Update: went back in after reading the post about the secondary filter and pulled the lower panel to check mine. Sure enough there was a good chunk of fuzz on the condenser grate that the main screen never touches. Cleaned it off and the drying times dropped noticeably. Now wondering about that gasket comment though, mine has a faint rubber smell after long cycles. Is that normal wear or something to keep an eye on?