Instant mobile refrigerant charge calculator for HVACR applications.

The HVACR Check & Charge™ mobile app from Emerson Climate Technologies provides an on-site refrigerant charge calculator for air conditioning and refrigeration applications. Based on historic sliding cardboard charge calculators, this app allows contractors to easily calculate the ​correct system refrigerant charge for R-22, R-410A, R-32, R-407C, R-134a, R-452B, R-454B, R-438A, R-422B, R-427A, R-421A, R-404A, R-290, R-449A, R-448A, and R-407A. Contractors can simply choose Superheat, Subcooling, or Airflow and enter the specified system temperatures along with the latent and sensible environmental loads. These values are then used to determine the proper system charge and whether the charge amount needs to be altered based on these conditions.

• AC & Refrigeration Systems
• Superheat Calculator (non-TXV)
• Subcooling Calculator (TXV)
• Airflow Calculator
• PT Charts (Pressure / Temperature)
• Find a Superheat target using psychometric calculations
• For use with R-22, R-410A, R-32, R-407C, R-134a, R-452B, R-454B, R-438A, R-422B, R-427A, R-421A, R-404A, R-290, R-449A, R-448A, and R-407A
• Imperial and Metric Support

Assists with calculating proper system refrigerant charge based on operating conditions.

Information on this and other Emerson Climate applications is available at

What’s New

Version 21.2.1

- Added link to Copeland Mobile in settings
Feedback always welcome:

Ratings and Reviews

4.8 out of 5
6.1K Ratings

6.1K Ratings

Richy Rich. ,

Will never change

From the first time I opened this App, I have loved it, on my iPhone, in my iPad nothing else will do. It has never let me down, easy to read, three this you’ll see add, remove and correct charge. Those 3 things will never change, and neither will I.

James_howard:) ,

Most accurate charge with 410-r22

Been using this app to get the perfect charge for r410a and r22 for 5 years now absolutely love this app and will definitely have all my technicians use this app for more years to come

It’s best used for superheat
Sub cooling is always 10degrees on systems in Ohio so I don’t use it for sub cooling

Chicken Liver 88 ,

5 stars

App works and runs great! Really nice way to show and educate customers about correct refrigerant charge via the graph. This app is a must for running early spring maintenances and make sure you’ve got the perfect charge in a system.

App Privacy

The developer, Emerson Climate Technologies, Inc., indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Linked to You

The following data may be collected but it is not linked to your identity:

  • Identifiers
  • Usage Data
  • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

More By This Developer

You May Also Like