A furnace filter has one side that allows it to breath fresh air through while the other side traps dust and particles from the air.
Lennox furnace air flow direction.
The most common terms used to describe the air flow configuration are.
As quiet as they are efficient lennox furnaces also startup and run perfectly quietly helping to preserve the peace and quiet of your home.
If you have already replaced your filter and your system makes excessive noise.
Upflow downflow and horizontal.
Lennox gas and oil furnaces are engineered to deliver perfect warmth efficiency and energy savings.
Get help from your lennox dealer.
Delivering precise comfort and temperature control lennox furnaces can keep your home to within 0 5 degrees of your ideal temperature.
These arrows point to the direction of the airflow which should be toward your furnace or air handler.