Follow the airflow path through the home
A Carmichael comfort complaint should identify which rooms receive weak airflow and whether the problem occurs in both heating and cooling. That pattern can help distinguish a distribution issue from a single operating-mode failure.
Before choosing a stronger filter or replacing a blower, check the filter size, return path and equipment requirements. Filter efficiency and airflow need to be considered together; a higher rating is not automatically suitable for the existing cabinet.
For indoor air quality, bring airflow and filtration into the scope discussion. Choose the measure that addresses the identified concern. Avoid a broad promise that an HVAC add-on will prevent illness or eliminate every indoor contaminant.
