I'm dealing with a super hot second floor that's usually over 10 degrees warmer than my main floor. I know I need to blow in more insulation for better energy efficiency, but I'm wondering if I should replace the flexible ducting in my attic first. The current ducting doesn't seem to push much air out of the registers and the whole setup looks a bit messy. If replacing the ducting is the right move, does anyone know of some good resources to learn how to install the new ducting? Thanks a bunch for any help!
5 Answers
Have you thought about conducting an energy audit? It can really help identify issues in your HVAC setup. Also, research "load balancing" related to HVAC systems—it could provide some insight into optimizing your airflow without needing to rip everything out. Sometimes just small adjustments can do wonders.
I had a similar issue where all the airflow was getting stuck on the bottom floor. After some trial and error, I learned that closing off registers down below actually pushed a lot more air upstairs. I had a damper installed to help balance the airflow, and now it works like a charm! It’s way cheaper than replacing ductwork, and it lets me control the air distribution depending on the season.
Short answer? No, you probably don’t need to replace your ducting just yet. A lot of the time, problems with airflow are caused by the return air duct not being properly placed or sized. The blower might just be circulating air the easy way instead of pushing it where you want it. Look at the overall setup of your system—it could save you a big headache down the line if you figure it out now rather than later.
I noticed you mentioned a disconnected duct fitting in one of your pictures. If there’s low airflow, it’s worth checking for kinks or tight bends in those flexible ducts! Those can hinder airflow significantly. It doesn’t hurt to double-check connections, and make sure everything’s fully stretched.
Honestly, it looks like your ducting might be fine as is. From what I can see, they've got some good rafter baffles and the insulation doesn’t seem too dusty, which would indicate air leaks. If you're planning to do some DIY work this fall, I would suggest focusing on air sealing any penetrations first before making big changes. Also consider checking your existing insulation. Sometimes just enhancing what you have can make a big difference without rushing into duct replacement.