The difference between downflow and upflow furnace units
If you're trying to figure out the difference between downflow and upflow furnace setups, you've probably spent some time staring at a metal box in your basement or a closet wondering why it looks the way it does. It's one of those HVAC terms that sounds way more complicated than it actually is. At its core, we're just talking about the direction the air travels when it gets heated. Most of us don't care which way the air goes as long as the living room isn't freezing, but the direction actually tells you a lot about how your home was built and where your ductwork is hiding. ...