Upon arrival I began the furnace tune up. First, I did a static pressure test on the system. This system is rated for a maximum static pressure of .5 and your system is testing at .48 which is below the maximum. Next, I checked the running amps on the inducer and blower motor and both were testing within specifications. I changed out the filter on the left side today which was a size 20x25x1 inch high velocity filter. The other filter on the right side was still clean today and it’s a size 20x25x4 inch filter. The temperature split in the house was within specifications at 47 degrees. If you have any questions or concerns please feel free to call us! Your LBA Technician, Tyler Rickard P.S. No payment was due today, it was covered with your membership. Have a great weekend!