Run the saw at full speed only and you won't have the duct/saw chatter and vibrate so much. Bottoming the saddle of the saw against the metal will also stabilize and eliminate the chatter and jerking.
He definitely made it hard. You can use a wheel, but just drilling a hole with a step-down bit then running a set of left and right tin snips would be done before you even got your saw or wheel plugged in.
Just messed up your whole hvac system. That round pipe was sized by calculating cfm and velocity. Now that you opened it up in the middle, your outlet that pipe was originally feeding is going to suffer, if not become useless altogether. You can DIY all you want but you can’t cheat physics.
Very useful video. I can't say enough how appreciate i'm that you made this video and shared with us. I was in same situation and didn't know now to overcome this issue. Your video really solved my big problem. Thank you so much for sharing this video with us. Much appreciated.
Are you a Pro? If so, wouldn't that be true anytime you add a new register to the system period, whether you're tapping into a feed trunk or an existing supply trunk as he did? What's the best solution?
I am an HVAC business owner that specializes in Home Performance. In this particular case, reducing the airflow is not a big deal and might help the system if the static pressure is high or it is a line with only one or two small ducts. It also makes a difference on the size of the ducting, the length and the CFM flow from the supply outlet at the AHU / Furnace. Usually, adding one single duct will do absolutely nothing. Most systems are oversized, and this might actually relieve some pressure on the system backflow or static pressure. The only way to know is to take a reading before and after. BUT there are far too many factors at play here. I have done this a thousand times but this is also what I do for a living.
Be careful with running these off existing ductwork that feeds registers on another floor. That could be a code violation. The reason I was given that a fire can then easily jump from one floor to another.
Thank you Glenn for sharing your video, it's what I needed to know. Off to HomeDepot.
Run the saw at full speed only and you won't have the duct/saw chatter and vibrate so much. Bottoming the saddle of the saw against the metal will also stabilize and eliminate the chatter and jerking.
Exactly what I need! Thanks a lot!
what size was your saddle vent and air duct(pipe). Please let me know. Thank you. Great video....
Bro cut off wheel...done Next! The seam on the main Truck/8" duct should be up not down.
That's what I get for having professionsals build my house :D. But I probably would have done the same :D
cutoff wheel! thank you, almost cut into mine with my monster sawzall
He definitely made it hard. You can use a wheel, but just drilling a hole with a step-down bit then running a set of left and right tin snips would be done before you even got your saw or wheel plugged in.
Just messed up your whole hvac system. That round pipe was sized by calculating cfm and velocity. Now that you opened it up in the middle, your outlet that pipe was originally feeding is going to suffer, if not become useless altogether. You can DIY all you want but you can’t cheat physics.
I will add a damper there
Huge shoutout for this video. Exactly like you said in the video, NO ONE seems to be talking about this but this video is awesome. Thank you so much!
Thanks!
Very useful video. I can't say enough how appreciate i'm that you made this video and shared with us. I was in same situation and didn't know now to overcome this issue. Your video really solved my big problem. Thank you so much for sharing this video with us. Much appreciated.
Thanks for posting! I am doing this at the moment. I have done a ton of things before but this is the first time installing one of these.
So I got the same problem that they dip below where the drywall will be, how did you fix that before drywall install?
Really good video thanks
how did you end up turning out with your sheetrock matching up here?
Sorry to report that I haven't made it back to that project yet - still about the same as it was then in that area.
@@grg1973 i am about to install and thinking i will just snip all 4 corners and bend the metal as necessary to the correct height
@@19CS91 that sounds like a good idea. I will remember that. Thanks Cody
Don’t do this. You are reducing the airflow to the register the supply duct was meant for!
Are you a Pro? If so, wouldn't that be true anytime you add a new register to the system period, whether you're tapping into a feed trunk or an existing supply trunk as he did? What's the best solution?
I am an HVAC business owner that specializes in Home Performance. In this particular case, reducing the airflow is not a big deal and might help the system if the static pressure is high or it is a line with only one or two small ducts. It also makes a difference on the size of the ducting, the length and the CFM flow from the supply outlet at the AHU / Furnace. Usually, adding one single duct will do absolutely nothing. Most systems are oversized, and this might actually relieve some pressure on the system backflow or static pressure. The only way to know is to take a reading before and after. BUT there are far too many factors at play here. I have done this a thousand times but this is also what I do for a living.
Be careful with running these off existing ductwork that feeds registers on another floor. That could be a code violation. The reason I was given that a fire can then easily jump from one floor to another.