How To Install Ductwork – Essential Things You Need To Know

Midwest Tin Snip:
Malco Drive Bender Folding Tool:
Round Duct Crimper:
Klein Tools 89552 Duct Hole Cutter:
Duct Stretcher:
Sheet Metal Hammer:
Malco Reversible Bit:
Milwaukee M12 Drill Kit:

Duct Calculator Slider:
Online Duct Calculator:

6″ Easy Air Grille Ceiling Diffuser Register:
Easy Air Quick Mount Fitting:

6″ Round to 4×10 Floor Register Boots:
6″ Round Pipe 90’s:
6″ Round Pipe Duct:

In this video I do my best to explain my opinion on ductwork design & implementation that takes in to account all of the various factors based on my 10+ years of field experience. This is how I would personally recommend designing your ductwork but there is more than one way to design ductwork so make sure that you do your research before choosing the methods that you would like it implement.

0:00 Introduction
0:40 Duct Sizing
1:35 Return Air
3:11 Jumper Ducts & Transfer Grilles
4:48 Central Return Air Option
6:00 Supply Ductwork
8:21 Keep Ducts In Thermal Envelope
9:00 Ductwork On Exterior Walls
10:50 CFM Requirements 400/ton
11:30 Supply Location Layout
12:31 Installing Extra Supply Vents & Balancing
15:58 Installation Tips & Fittings Used
17:05 Floor & Ceiling Registers
18:06 Soffit For Ductwork
19:00 Angle Boots & 6″ Fittings, 90’s, 45’s, Full Tab Takeoff
20:32 Reducing The Main Trunk Size
22:13 Flex Duct In Attic Space
24:31 Should You Seal The Ductwork
27:37 Do Not Seal Old Ductwork in Conditioned Spaces
29:30 Conclusion

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Blessings from Minnesota,