HVAC Toolbox

HVAC Toolbox is the calculation toolkit for HVAC, refrigeration, and electrical technicians. It brings together in a single app the calculators you need on-site, without requiring an internet connection.

Calculators included:

Electrical: Calculation of common electrical parameters in HVAC/R installations.
Cable cross-section and ampacity: Sizes conductors and checks their current capacity according to the load.
Airflow and ductwork: Flow rate, velocity, cross-section, and air changes per minute for ductwork sizing.
Water circuits: Thermal power and flow rate in hydraulic systems.
Thermal power converter: Automatic conversion between the most commonly used units (kW, frigories, BTU/h, etc.).
Superheating and subcooling: Direct calculation for diagnosing and adjusting the refrigerant charge. Pressure-Temperature (P-T) Tables: Offline refrigerant tables with bidirectional interpolation, generated using CoolProp reference data, for R22, R32, R134a, R290, R404A, R407C, R410A, R449A, R452A, R454B, R507A, R600A, R744, R1234yf, R1234ze, and more.
General Unit Converter: Common industry units on a single screen.
Designed for everyday use on the job site:

Works offline: All refrigerant calculations and tables are available offline.
Local history of results saved on the device, allowing you to review previous calculations without having to repeat them.
Clear and fast interface, designed for use with a mobile device during installation or maintenance.
Visual preferences (theme, units) are remembered between sessions. Installable as an Android app, with regular updates to refrigerant calculators and tables.
HVAC Toolbox does not replace technical expertise or compliance with current regulations for each installation, but it streamlines the most repetitive calculations of the trade: electricity, flow rates, ductwork, and refrigerant diagnostics, all in a single offline tool.