I didn't think anything of it since I didn't know anything about furnaces but my realtor put an extra contingency in to get another inspection of it paid for by the seller. The closing was within 30 days and they never got around to it in the week or two left after the first inspection, once I signed it was just forgotten. Maybe it was my job to get them on top of it, but he should have at the least brought it up near the signing to postpone it a day and enforce the contingency.
I ended up replacing it the next year. It wasn't terrible for me since I moved in with extra cash ready for such things, but could have been very bad for someone else who put everything into the down payment.
There were other things he was on top of though. He got the seller to come back and fix some wiring that the inspection had missed free of charge on my part which was fantastic. Not a safety issue, just usability. I didn't like what some of the switches controlled so I know they had no obligation to do it. The company who remodeled my house sells a lot of houses around here, so I suspect he has a rapport with them.