Upon arrival performed maintenance. Indoor blower wheel is extremely dirty. Filter needs to be swapped every 2-3 months. Secondary motor control is out of range. This can stop that indoor motor whenever it fails completely. Dusted and cleaned entire burner assembly and heating compartment. Cleaned flame sensor out. Recommend adding some protection because circuit board has a ton of heat bubbles around terminals, that can def have intermittent issues. Replaced filter client provided. Adding a purification system would help the standard filter become higher filtration, keep indoor air quality levels clean. System is operational, called gale kver phone and went over findings. Will call us back she is at work .