If you smell dust every time your furnace starts…<br />
you need to get your ductwork cleaned

When your fan is filled with dust and lint…
it doesn’t move as much air

A dirty A/C coil blocks movement of air…
Causing it to ice up and quit working

Lint causes restricted air flow…
resulting in your dryer working harder

Your refrigerator needs to get rid of it’s heat…
with a dirty coil it’s unable to