Currently, the cold air return for our system is right next to the edge of our counter where the kitchen meets the dining room. It's really awkward and I can just see us dropping small items down the shaft by accident. So I want to move it to the other side of the dining room, just about 10 feet further where it'll be next to a wall and baseboard heater and not near where we intend to put any furniture. Aaron isn't sure we can do it, and isn't sure he has the skills required to pull it off. I was hoping to get some information: #1. Does cold air return hose only come in 25' lengths maximum? Aaron believes including the bend to go around an edge needed already leaves it 25' away. #2. Does anyone have experience with putting in new subfloor and removing some? From what I can gather, it looks like we'd just cut the appropriate hole in the subfloor for the cold air return as long as the joists aren't in the way. Then for the old hole, we'd put down plywood (nail? staple? to the joists) on the hole, or cut the hole bigger to nail it to the joists if they aren't exposed by the existing hole. I just think the current placement is really awkard and if the floor were whole there, it'd be the perfect place to feed our dogs. The "new" placement is away from any area that we would regularly be handling small items, so dropping things in wouldn't be a concern so much.