2025 - FAILED HERS FORM

AIRFLOW
METHOD PERFORMED

FLOW HOODFLOW GRID
TONS
MINIMUM AIRFLOW RATE

300 REPLACED350 NEW
REQUIRED MIN AIRFLOW (300)
(300 X TONS)
REQUIRED MIN AIRFLOW (350)
(350 X TONS)
ACTUAL AIRFLOW
CFM
PHOTO - FAILURES AIRFLOW

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AIRFLOW FAILURES

Blower SpeedUndersized Return DuctAdditional Return Grille (Platform)Return Grille SizingOther
Blower Speed
We recommend verifying that the blower speed is set to its highest capacity and/or the correct speed taps are selected for the highest blower speed.
Undersized Return Duct
We recommend ensuring that the return duct sizing is sufficient for the amount of airflow required for this system.
Additional Return Grille (Platform)
It appears that there is an opportunity to add an additional return for this system. We recommend cutting in and adding an additional return to increase the amount of return airflow.
Return Grille Sizing
The system may benefit from changing the return grille to a high-velocity/fixed bar type grille, which is more aerodynamic and can allow for higher efficiency.
NOTES - AIRFLOW

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2025 FAILED HERS FORM