All of HEIL H9 models of that time had poor drain system, go to dealer and get new retofit kit, cost me $1, put one on all furnaces put in before A3 mod#, it will take care of problems.( Till pressure switch sticks closed) while at dealers get new pressure switch # 1014828 save another trip. (under warranty)
I have an 8 year old Heil furnace in Canada. The transition assembly is now cracked in one corner and leaking. Is this item covered by the retrofit kit you mentioned in 2005?