TracPipe System Guide vs Duct Sizer Calc HVAC

This App allows the user to size the TracPipe® System Flexible Gas Piping products, to either the Longest Run or Branch length method of gas pipe sizing. Whether the installation is in TracPipe, TracPipe AP, or TracPipe PS-II CSST (Corrugated Stainless Steel Tubing). The App displays the appropriate size of piping for a given capacity depending on the type of gas, supply pressure and allowable pressure drop selected by the user. By selecting the design parameters using easy drop-down menus the user then chooses the length of pipe and tubing size on the easy-to-read calculator wheel to find the capacity capable of being delivered by any of the seven sizes offered by TracPipe. Gas piping systems sized with the TracPipe Size and Capacity Calculator must be sized in accordance with the steps for the Longest Length Method or the Branch Length Method as outlined in Chapter 4 of the International Fuel Gas Code or Chapter 6 of the National Fuel Gas Code. The piping system designer must assure that the pressure drop is such that the supply pressure at the appliance is greater than or equal to the minimum pressure required by the appliance. This App provides access to multiple features including our TracPipe System Flexible Gas Piping Design Guide & Installation Instructions (D&I Guide), Price Sheet, Fitting Assembly Videos and Instructions, Contact Us Information, and our Training Portal.

HVAC Duct Sizing Calculator is the professional duct sizing tool for HVAC technicians, engineers, and contractors. Calculate correct ductwork dimensions based on airflow (CFM), velocity, or friction rate using ASHRAE standard sizes and ACCA Manual D methodology - the industry standard for professional air conditioning system design. SIZING METHODS: CFM-Based Method - Enter airflow and get recommended standard duct sizes instantly Velocity-Based Method - Size ducts by target air velocity (FPM) for proper sizing Friction Rate Method - Default 0.08 in. w.g. per 100 ft or custom pressure drop values DUCT TYPE SUPPORT: Round Duct Sizing - Calculate diameter based on CFM and friction loss Rectangular Equivalent - Find standard rectangular dimensions for any round size Flex Duct Correction - Automatic 10% correction factor for flexible ductwork All Standard Sizes - Results snap to ASHRAE industry-standard dimensions ADVANCED CALCULATIONS: Velocity Check - Ensures airflow stays within safe limits (optimal 400-900 FPM) Pressure Drop Analysis - Darcy-Weisbach calculation per 100 ft of duct Reynolds Number - Full hydraulic analysis for precision engineering Friction Loss Display - See calculated friction for every result OPTIONAL PRO UPGRADE — $2.99 ONE-TIME IN-APP PURCHASE The following features require a separate one-time in-app purchase. They are not required to use the calculator: • Unlimited saved calculation history • PDF export of results • Dark theme • Ad-free experience WHY HVAC PROS USE THIS CALCULATOR: Faster ductwork design than manual slide rules and ACCA charts ASHRAE-compliant and Manual D-verified sizing ensures proper system performance Cross-check velocity and friction rate for perfectly balanced systems Prevents over/undersized ducts that reduce efficiency and increase noise Field calculations without internet connection needed on job sites PERFECT FOR: HVAC design engineers planning new installations HVAC technicians calculating duct replacement sizing HVAC field technicians verifying existing ductwork AC contractors preparing accurate job estimates HVAC students learning Manual D design methodology Residential and commercial HVAC system design Based on ACCA Manual D constant friction method and ASHRAE Handbook fundamentals. Part of HVACTools Suite - the complete HVAC technician app for field calculations, refrigeration tools, and air conditioning diagnostics.