Did a preventative maintenance on a Lennox gas furnace and a humidifier service. During the maintenance I clean the flame sensor. Also cleaned out the burner compartment and the blower compartment. Also did Am readings on the inducer motor and the blower motor which both meet to furnace specs. I also did a combustion test the O2 level was 20 and then seal level was 6. Also swapped out the filter. And the number 35 humidifier panel. And cleaning it out flushing the drain line and making sure the condensate pump works. While servicing the humidifier I noticed it was not getting water, so I shut the saddle valve and opened it back up again and it got water. Everything is working properly at this point. I recommend a new Bi-pass humidifier M#SL280UH110V60C-03 s#5915D19352