but some Sears furnaces were made by Luxaire. The had very robust heat exchangers.
My dad got one from Sears when condensing furnaces first came out, and it was a Heil. It's still working. My sister had it inspected last year.
We had a Sears Homart 600 oil boiler installed when I was a kid with new baseboard heating in the mid 60's. When it was put in I couldnt believe how small it was compared to the big hot air octopus it replaced.
Thanks for the information on the manufacture of the Homart Furnaces. I remember for a time that Whirlpool were building their furnaces and condensers. Wonder what year they started for Sears.
There are quite a few people that have posted videos on Youtube of their Homart Furnaces still in operation. They are very proud of them.
Thru 1958 were GM Delco Heats, This one is a Heil, The gas Heil furnaces were good, the oil fired not so much, the small square heat exchangers were prone to crack, but I loved the old Delco built ones.