Up to 3-1/2 tons of air conditioning can be added to this unit

85,000 BTU input and 70,000 BTU output with .60 gallon 80 degree "A" nozzle - 105,000 BTU input and 85,000 BTU output with .75 gallon 80 degree "B" nozzle - 120,000 BTU input and 95,000 BTU output with .85 gallon 80 degree "B" nozzle

10 gauge primary heat exchanger - 14 gauge secondary heat exchanger - Both heat exchangers are lined with with 18SR stainless steel - Ceramic fiber combustion chamber - No filter rack

Extended jacket covers the burner - Accessible cleanout ports - Direct drive