Air balancing is becoming more common across the country and being enforced on many new residential HVAC installations due to code and utility program changes. In some areas, air balancing requirements are stretched to meet minimum compliance while others are strictly followed.
Regardless of specifications, it’s tough to get a system where it can be air balanced. Being accountable for proper airflow delivery causes a tech to examine every portion of an installation differently. Airflow is no longer assumed since test instruments now measure it.