Intro

Your air filter helps keep dust and dirt out of your HVAC system. If it is not changed, problems can start quickly.

Common Problems When the Filter Is Dirty

• Airflow gets weak

• Rooms do not heat or cool well

• The system runs longer and costs more

• Dust builds up inside the system

• Parts can overheat or freeze

Simple Things You Can Check

• Look at the filter. If it looks gray or packed with dust, replace it

• Make sure the arrow on the filter points the right direction

• Use the correct filter size

When to Call a Professional

• The system will not turn on

• The AC is freezing up

• The house will not cool or heat even after changing the filter