Undersized Return Duct – Starving the System

If your return duct is too small, the blower must work overtime to pull enough air through. That extra strain raises amperage, shortens motor life, and reduces cooling performance.
Chatterbox flags this condition through air velocity, static pressure, and fan power data. When pressure is high and airflow too low for the unit’s tonnage, we know the system is starving for air.
Homeowners may only notice louder airflow or weak cooling, but Chatterbox pinpoints it precisely so technicians can resize the duct or add an extra return. The result: quieter operation and higher efficiency.