Check the HVAC filter
Replace it if it looks gray, clogged, or airflow feels weaker.
Why it matters
A clean filter supports airflow, indoor air quality, and efficient heating and cooling.
Steps
- Turn the system off at the thermostat.
- Remove the filter and note its size and airflow arrow.
- Replace a visibly dirty disposable filter with the same size and rating.
- Point the airflow arrow toward the blower and restart the system.
How often should I check the HVAC filter?
Monthly is the planning default. Follow your equipment instructions and act sooner on a fault.