1.5 ton
3 TON
This is a 3 ton unit.
3 ton
It is a 2 Ton Unit
model 030 = 30,000 BTU = 2.5 TON
4 ton
2 ton
since the model number has 42, i would say it probably is a 3 1/2 ton.
2 ton.
Most manufacturers put a number related to Btu's of the unit in the model. If Rheem is no different then that 42 represents a 3.5 ton unit as there are 12,000 btu's / ton and 3.5 X 12 = 42.
five ton