Hey guys & gals I need some help on the ages of these two units. They are both pretty old.
Friedrich A/C condenser
M# CU42R-2
S# 5178
1978??
Friedrich Electric Furnace
M# EF20-100
S# 48589
1989??
Can’t assist on the electric Friedrich furnace. Sorry
I have the following codes that came close to your Friedrich Condenser…
CU421 1968-1969
CU421-1 1970-1971
CU421-2 1971-1972
Thanks David! A typo on my end. The condensor was a CU421-2.