Up to 4 tons of air conditioning can be added to this unit

70,000 BTU input and 60,000 BTU output with .40 gallon 60 degree "W" nozzle - 84,000 BTU input and 72,000 BTU output with .50 gallon 60 degree "B" nozzle - 105,000 BTU input and 89,000 BTU output with .60 gallon 60 degree "B" nozzle

3 pass design heat exchanger - Install as low profile highboy, horizontal left or horizontal right - Front or rear flue - No filter rack

Easy access cleanout ports