We agree! In our work, we’ve found that measuring system airflow is the exception rather than the rule among contractors. We hope videos like this might help more contractors put it into practice.
You certainly can do that, but it will likely be more time-consuming -- and invite more potential errors -- to measure all the individual registers in order to measure *total* system airflow. Measuring register airflow is definitely a good idea if you’re trying to diagnose comfort issues for individual rooms. Thanks for the question!
great video - super informative! do you think the low airflow at the front of the duct was caused by the holes you drilled? curious why it's so consistently low on the front of the duct
Hi, Michael. It's unlikely that the holes created that airflow pattern. More likely, it has something to do with the layout of the ductwork upstream of the measurement point. After measuring many homes this way, the one thing that we can say is that the airflow pattern is unpredictable from home to home.
Very good video, thank you for sharing!!!
I have yet to find a contractor doing any sort of ductwork testing/analysis; where do these contractors exist?
We agree! In our work, we’ve found that measuring system airflow is the exception rather than the rule among contractors. We hope videos like this might help more contractors put it into practice.
Why can't you just measure the wind speed coming out of the registers??
You certainly can do that, but it will likely be more time-consuming -- and invite more potential errors -- to measure all the individual registers in order to measure *total* system airflow. Measuring register airflow is definitely a good idea if you’re trying to diagnose comfort issues for individual rooms. Thanks for the question!
great video - super informative! do you think the low airflow at the front of the duct was caused by the holes you drilled? curious why it's so consistently low on the front of the duct
Hi, Michael. It's unlikely that the holes created that airflow pattern. More likely, it has something to do with the layout of the ductwork upstream of the measurement point. After measuring many homes this way, the one thing that we can say is that the airflow pattern is unpredictable from home to home.