Austinz 12/31/24 Completed the upstairs furnace tuneup. During the visit, I went to the system diagnostic thoroughly to ensure the entire system was working as it should, and during the visit, I noticed that the batteries on the thermostat were low so I was able to get those changed out for the homeowner so that he did not have to worry about it dying later Then proceeded to check the filter to make sure it was clean and it wasn’t real dirty and the homeowner stated that they don’t really run the system upstairs too often since the heat rises upstairs, so I went ahead and left a clean filter with him for when he needs to change it next cause right now it is still good but then I proceeded to check the mechanical parts and gas pressure in the system and everything was running exactly how it should with no issues during today’s Visit. Which I am always happy to see a system in good shape and no issues I did bring up the yard signed to put outside however, he was not interested in doing i