How Often Should You Change Your Furnace Filter?
The filter is the cheapest part of your system and one of the most important.
Request an HVAC technicianCheck it monthly
Pull it out and hold it to the light. If you cannot see light through it, change it.
What changes the schedule
Pets, dust, renovations, allergies and smoke days all clog filters faster. Follow the filter maker's guidance.
Use the right size
The size is printed on the edge of the old filter.
Why it matters
A clogged filter cuts airflow, makes the system work harder and can cause it to shut down.
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