Mig Mag Digital LLC
Mig Mag Digital LLC

Calculation precision for the HVACR technician

We design clear, rigorous apps for fieldwork: Mollier diagrams, psychrometric charts and diagnostic tools, built by people with experience in the trade.

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Coming soon to Android and iPhone
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p-h diagram · R-410A
200500100020005000100200300400500Enthalpy h (kJ/kg)Pressure P (kPa, log scale)1234EVAPORATIONCONDENSATIONEXPANSIONCOMPRESSIONR-410A
Illustration: a vapor-compression cycle on the R-410A pressure-enthalpy diagram, drawn with the app’s own data.
23refrigerants with a pressure-enthalpy diagram
6languages in the same app
3export formats: PNG, SVG and PDF
2tools in one: Mollier and psychrometrics
Products

What we are building

Apps designed to read well in the shop, on the roof and in the truck.

Coming soon · Android and iPhone

Mollier Diagrams and Psychrometric Charts

Draw your refrigerant’s pressure-enthalpy diagram from the high and low side pressures, and the psychrometric chart at your local barometric pressure. Download the result to print or share.

  • 23 refrigerants: from R-22 and R-410A to R-32, R-454B, R-290, R-717 and R-744
  • Superheat and subcooling from the vapor and liquid line temperatures
  • Learning mode, adjustable text size and high contrast
  • Export as PNG, SVG or PDF
psychro · 101.3 kPa
01020304050051015202530Dry-bulb temperature (°C)Humidity ratio (g/kg)10%20%30%40%50%60%70%80%90%24 °C · 50 % RH
In development

HVACR Portal

A subscription portal for HVACR technicians, bringing professional tools together in one place.

  • Built around the technician’s daily work
  • Accounts and subscription
  • We will announce it here when it is ready

Want to hear about the launch? Write to soporte@migmagdigital.com

How it works

From a field reading to a diagram in a few steps

Pick the refrigerant

Choose from 23 refrigerants, from the classics to the newer low-global-warming options.

Enter your readings

High and low side pressures for the cycle; dry-bulb temperature, relative humidity and barometric pressure for the air.

Read and export

Get the diagram and chart with your points marked, and download them as PNG, SVG or PDF.

Principles

Made by technicians, for technicians

Rigorous data

Thermodynamic properties computed with CoolProp, a widely used open-source library.

Clarity in the field

Adjustable text, high contrast and a learning mode that explains how to read each diagram.

Privacy first

The charts app asks for no account, shows no ads and calculates on your device.

Contact

Questions, ideas or errors to report?

Write to us. We read every message and reply as soon as we can.

soporte@migmagdigital.comSend emailEmail copied