HVAC Furnace Gas Orifice Size Calculator

Furnace Input Capacity (BTU/hr) *

Number of Burners *

Gas Type *

Natural Gas

Propane

Gas Heating Value (BTU/cu ft) *

Gas Specific Gravity *

Manifold Pressure (in. w.c.) *

Installation Altitude (ft) *

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How to use HVAC Furnace Gas Orifice Size Calculator

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