TAB Toolbox

PAD Developing

About this app

TAB Toolbox is a practical field calculator app built for HVAC test and balance work.

The app gives technicians quick access to common TAB and HVAC calculations used in the field, including airflow, duct traverse points, duct sizing, heat transfer, temperature mixing, fan laws, electrical calculations, hydronics, pumps, boiler calculations, psychrometrics, unit conversions, and reference formulas.

Features include:

• Airflow calculations for CFM, FPM, velocity pressure, and air changes
• Round, rectangular, Log-Tchebycheff, and flat oval traverse tools
• Ductulator calculations for duct sizing, velocity, and friction loss
• Heat transfer calculators for air-side and water-side work
• Fan law and pump law calculators
• Electrical and hydronics calculators
• Psychrometric state calculator with optional device elevation
• Unit conversions and common HVAC reference formulas
• In-app disclaimer, privacy notes, terms, and support contact information

TAB Toolbox is intended as a field calculation aid. Results should be verified against project documents, equipment data, applicable codes, specifications, and accepted industry standards. The app does not replace professional judgment, engineering review, commissioning requirements, or authority having jurisdiction requirements.

What’s new

Version 1