The only worse than the York furnace in my house, are the warranty service contractors that York has chosen in Ontario Canada; Aire One.
Aire One and York attempted to defraud me, when they claimed that the Warranty on my furnace wasn't transferable and I would have to cover the $1400 for the Main Board, Thermister and Labor.
Only Mastergroup was honest with me.
My lemon Affinity 9C, has had error codes displaying the entire time I have owned it. Aire One has been to my house at least three times a year to replace a door interlook switch, clean the flame sensor, replace components, bandaid it back together, only to have it fail again a month or two down the road. My wife is absolutely livid with York, who has done nothing to make this situation right. If they're complacent to Aire Ones fraud, then maybe there in on it?
If you are going to buy a York, buy the extended warranty with the labor included. And make sure you factor in the cost of the service calls as, diagnostic visits at $110 each are not covered by the warranty.
As York has made no effort to make it right with me, I will never purchase another York product again.