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7.5 tons.
It seems to be a 1.5 ton.
2 Tons or 24,000 BTU.
3.0 TONS
3.5 tons 42000 btus
48 -> 48000 BTU -> 3 ton
1.5 tons.
It"s a five ton unit.
2.5
3 ton 2.5 tons, denoted by the 30 in the model #. 3 tons would be a 36.
3.5 Ton unit.
4 tons