I am a highly skilled and experienced home service professional. I recently completed a job that involved changing the filter and checking the operation of a sequence furnace. The furnace was running smoothly before the job, but I noticed that the air quality was not as good as it should be. I checked the filter and found that it was dirty, so I replaced it with a new one. After that, I checked the furnace's operation and found that it was running smoothly and efficiently. The customer was very satisfied with the job, and I was proud of the work that I had done.
