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Knowledge is power, so although we can't always correct the problems we see with duct work, I'm hoping that with some knowledge we can make some little changes that may make a big difference in the performance and efficiency of existing systems. through my videos, I'm hoping it lights the inspiration for you to look farther and learn more, these are just a stepping off point, good luck and keep learning .

Book recommendations:
1.) Understanding Manual D® - Residential Duct Systems: https://www.amazon.com/dp/189276542X
2.) Manual D - Residential Duct Systems:
https://www.amazon.com/dp/1892765438