Structural – How to Drill a Hole Through Beam Support Wood

From the information you've provided, it seems as though the post is likely not needed. However, none of us have been to your house, seen the plans, nor talked to the builder or engineer. So we cannot say for sure, what the purpose of the post is.

I've seen temporary braces, and even tools left behind on builds. So it's definitely possible that it's no longer needed. But when it comes to the structural support of your home, you're going to want to be sure.

Contact Ryan Homes, and ask them about it. If they can't answer, find the original building plans (sometimes given to the original owner, otherwise should be on file at city/town hall). If you're still not sure, contact a structural engineer to have a look.

Don't remove the post until you're sure it's not needed.

2x8s aren't adequate for floor joists by modern standards, let alone for beams (even doubled). Someone probably added the steel beam and post due to floor bounce or sag. My former home had something nearly identical underneath where a fireplace was added.

I'd either leave it in place or bolster the doubled 2x8s that are along the duct with additional support in other ways:

1. Add another beam underneath them.
2. Replace them with a 3-1/2" laminated beam of the appropriate height (consult an engineer).
3. Add a post to halve the span. This would require adequate footing structure, of course.