Cycle power To furnace
Cycleing power to the furnace can correct many common errors. There are 2 common methods to cycle power to the furnace 1. Locate the light switch or power cord for the furnace, the switch will always be atatched to the side of the furnace if present. unplug or switch the furnace off for 30 seconds then power the furnace back on. 2. Locate the breaker labeled "FURNACE" and power it off for 30 seconds then power it back up.
Check your Filter
A dirty filter or a filter of the wrong size can cause a decline in air quility and a restriction to airflow. The standard filter for all of our systems is the Honeywell 20x25 4". To replace your filter first remove the filter door on the filter cabinet, then remove the old filter and set it aside, write the date on the new filter using a sharpie or pen, insert the new filter with the arrow pointing towards the Lennox furnace, replace the filter door by lining up the clips and pushing firmly until it clicks into place. It is recommended to replace your filter every 3 months to insure quiality air flow and a happy system. Links to purchase filters provided below. Home Depot Amazon

Does Your thermostat look like this?
Don't worry! This means your system is in "Away Mode". Luckily, its a easy fix that only takes a few seconds!
Follow this easy step by step guide
Step #: 1
Locate your Main Thermostat (Could be in your Master or Main). You'll see an Icon on the bottom left corner of your Thermostat that states "Cancel".
Step #2:
Simply Click on that "Cancel" Icon once. This will take your system out of away Mode. Note: The bottom Left Icon will now say "Away". This is exactly what we want it to say!
Now You're All Set!