Maybe not the most exciting, but new furnace today. Looks like the guys did a good job, everything is clean and tidy. Apparently the venting before was mixed up (exhaust was intake, intake was exhaust), so it was plausible water could enter the furnace. Had them run 6 wires to my Ecobee too so that it can control the staging. So far so good, seems to be keeping the house more consistent as it's running mostly in stage 1.