Kitchen range hood fans are now required to be verified by a HERS rater. Kitchen range hood fans that exhaust more than 400 cfm at their minimum speed are exempt from this requirement. Kitchen range hood fans are required to discharge the exhaust airflow to the outside. Re-circulation range hood types are not allowed.
The new verification protocol requires comparing the installed model to ratings in the HVI directory of certified ventilation products https://hvi.org/proddirectory/index.cfm to confirm the model is rated by HVI to comply with the following requirements:
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