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HVAC Furnace Gas Orifice Size Calculator
HVAC Furnace Gas Orifice Size Calculator
Furnace Input Capacity (BTU/hr)
*
Number of Burners
*
Gas Type
*
Natural Gas
Natural Gas
Propane
Natural Gas
Propane
Gas Heating Value (BTU/cu ft)
*
Gas Specific Gravity
*
Manifold Pressure (in. w.c.)
*
Installation Altitude (ft)
*
Calculate
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