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how do you size duct work how do you make sure that you have the right duct size for the equipments tonnage return grill sizing how do you make sure that you have the right return grill size for the right tonnage of equipment when you offer a new proposal to a customer youre going to change out some equipment something that i do is i measure the duct work i count the vents i check my cfm capacity of the equipment that im going to offer and then also how many vents i have to make sure that i have enough vents for the capacity of the equipment todays video is all about duct sizing were also going to have an example of a job that i go to im going to show you how i measure that duct and how i determine that im not going to use this size but im going to use this size this video is key to you being a good contractor a good hvac technician in the field because one of the number one problems we have in this industry is airflow there are so many jobs where ive went and installed new eq
