Calculators

The SMACNA Duct System Calculator has detailed instructions and calculations to enable HVAC system designers to design an average duct system witho...

Now you can easily compute fixture unit load values for drainage and vent piping. This calculator has been updated to the 2018 Uniform Plumbing Code.

This calculator is used for sizing pipe systems carrying natural gas of 0.60 specific gravity at approximately eight (8) inches water column pressu...

This 2018 calculator is based on Table 6.5 of the Uniform Plumbing Code (UPC) and helps compute water fixture units (WSFU) and Minimum. It has been...

This durable two-sided plastic sizing wheel comes with a complete instruction manual for residential and commercial duct-sizing procedures. Designe...

Laser Dimension Master 130 is a one-person laser measuring tool for distances, areas and volumes. It is easier and faster to use than a tape measur...

2021  IAPMO DWV Sizing Calculator

2021 Drain Waste and Vent Pipe Sizing Calculator

2021 Gas Sizing Pipe Calculator

This calculator, complete with detailed instructions, enables HVAC system designers to design an average duct system without additional references....