Arrived on site to preform a 20 point maintenance on a comfort pro furnace. Upon arrival I kicked unit on into heat mode. Verified the heating sequence and everything ran normally. Took an inducer motor amp draw, inducer amps were within design range. Checked burner assembly and flue vent for proper venting. There were no leaks detected at the time of maintenance. Changed filter 16X25X5 merv 16 HCS, static pressure was slightly higher than what was rated not to concerning now but as time goes on that should be addressed, I explained this to the customer and what things we could do to fix that in the future if he so chooses. Switched to cooling took a blower motor amp draw when running the hardest, blower motor was within range as well. Condensate was cleared and was draining at the time of maintenance (condensate pump). Recommended a whole home purification as he said his wife gets allergies, he said he would talk it over with he wife and may consider it in the future. Unit was operati