HVAC 90 degree corner without elbow

Hello,
So I needed my HVAC lifted to accommodate a door. My contractor had an HVAC guy that sounded very knowledgeable and had ordered elbows and everything, but unfortunately he wasn’t able to do the job due to an emergency. Another person did it and now it’s “saddled”, but he didn’t use elbows, it’s just cut ductwork patched up and now the corners are a square shape. I’m really worried about air flow and would love any and all insight. Thank you in advance!

Also, when I asked my contractor, he responded, “ For every 90 it reduces 3-4 ft of straight line or so,” and told me to see if I notice any difference, but didn’t think it was a big deal.

yeah, a flat setup like it sounds like isnt the most efficient setup. I expect a lot on here would want radius ells, a curved surface rather than corners, since more streamlined. or offset the duct up to higher level, even better, assuming space for length of offset.

Square elbows are ok if they have turning vanes. Vanes can be put in after the fact with a little it and patch if need be.

Thank you for replying! What I’m trying to learn is what that translates to, (sorry, ignorant homeowner). Are we talking potentially loss of hundreds of dollars over the years or year, or other disadvantages I’m not realizing?

Would that be considered a big job? Like more than the original work of saddling?

I think I’m close to having the necessary posts before I can add a picture, so I’ll try, because I think it will explain it better

And can I test with an anemometer? Because when my contractor told me to see if I noticed a difference, I can try, but want something more concrete.

https://drive.google.com/file/d/1EzD…w?usp=drivesdk

Fingers crossed this works

I would not call it a big job normally but without seeing it there could be more to it than one realizes.

As to what happens if you don’t fix it. Depends on how much turbulence it causes, how mush it slows airflow, and how much noise it creates.

Like I said though, it wouldn’t be the first time what I thought before seeing and after were to very different things.

Thank you so much! And I know it’s hard to say without seeing it. I now have enough posts, but the picture doesn’t seem to show up. I’m working on it, but I really appreciate your help!

Click on advanced posts.

Scroll down to manage attachments and click on that.

In the top right of the next screen is a tab select files.

Select your file and click the upload tab.

Your picture should be down in the bottom left corner. If it is hit the done tab lower right which will take you back to where you clicked manage attachment which should now show a link. Click post when you are ready to post.

You’re so nice to help with all of this, thank you!!

You added about the equivalent of 150’ of straight pipe. Unless it has turning vanes then you are looking at about 40-50’ of straight pipe equivalent

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