I had a dryer vent with the cover and flap door on my house and it would sometimes get plugged with lint and the door would stick open. I changed it for the louver type dryer vent. now one of the louvers sticks open. I was wondering what is the best type of dryer vent to use, which one has the least problems, and maybe one that even have a way to clean it out once it starts to stick open. which type do you recommend, use in your own homes? thanks

We have lived in this home for just about 2 years now. It is a 2-story, 4,000 square foot brick home in Chesapeake, VA. Fairly mild climate. Winters are generally 40-50 degrees out on a normal day but it can occasionally dip into the 20s. Summers are very warm and humid, normally upper 80s/low 90s but can reach 100. Our house has a 3 year old Lennox package unit for downstairs with ductwork in the crawl space. The 2nd floor is heated/cooled by a heat pump outside and air handler (both are 16 years old) in the attic with ductwork in the attic. No complaints whatsoever with the heating and cooling of the first floor. I have noticed that on the 2nd floor some areas heat and cool better than others. Some ceiling registers blow out quite a bit of air while others blow out very little. I have checked for leaks or loose connections but have not found any. What’s also odd is that the air handler is almost in the middle of the attic with 1 main line running to one side of the house and another to the other side of the house. One side gets pretty good air while the other doesn’t. I’ve drawn up a diagram of our setup and attached it. The green line is trunk #1 which I believe is 14” diameter. This feeds 8 registers. 3 or 4 of the registers put out great airflow while the others are so-so. The blue line is trunk #2 which I believe is 10” diameter. This feeds 5 registers. All 5 of these receive very little air flow. My first question is what do you think could be causing the poor and almost non-existent airflow to the registers serviced by trunk #2? The trunks are all hung from the rafters in the ceiling so they are completely undisturbed. The trunk is roughly 30’-35’ long. My second questions is why do some registers serviced by trunk #1 (mainly the ones in the master bathroom and the master closet) put out great airflow while the rest are just so-so? This house was built in 2001 so it’s relatively new and I can’t imagine someone building what I consider to be a nice house would completely screw up the design for the 2nd floor ductwork. Spring and fall isn’t too bad but in the summer when I leave home the temp might be 73 and I leave it set at 73…when I get home it’s 77. In other words, the AC runs the entire day and still cannot even maintain the temperature much less lower it. I believe part of that is due to the fact that not all registers are putting out the right amount of air, the other part is the unit is 16 years old and I believe it’s a 10 SEER. Also, I do not believe there are any dampers in the ductwork upstairs so that would not be a cause for why some registers put out more air than others. Additionally, all registers are fully open. Any input would be greatly appreciated.