Added 1975-09-04 10:49:21
App Freshness



Kevin Burandt
HVAC Buddy
Post Date:
2016-10-25 22:49:21

Download HVAC Buddy »

Get the number one selling refrigerant charging and diagnostic HVAC app for the iPhone – HVAC Buddy. If you are servicing equipment the best way to begin diagnosis and determine the proper refrigerant charge is to use HVAC Buddy, a set of gauges, and a thermometer.

• Superheat for fixed capillary or Subcool forTXV/EXV systems
• Calculates targeted vs. actual Subcooling
• Common refrigerants R-22 (Freon), R-410A (Puron), R-404A, R-134A
• Airflow / Delta-T / TEET Calculation
• Diagnosis tab for leaks, overcharge, contaminants, etc.
• Email System Status Report
• Imperial (IP) or Metric (SI)
• Use Target Superheat and Subcool tables or enter manually
• Fast! Update values realtime with Temp and Press sliders
• User friendly with several pages of step by step instructions

if the early outdoor temperature is 75F and you charge the system to a “beer can cold” suction line your system is likely improperly charged. Later in the afternoon high temperatures will increase head pressure and the resulting overcharge means a lower than desired superheat and wasted energy. Not good!


Use HVAC Buddy to enter refrigerant, temperatures, and pressures. The math is done for you to display Superheat or SubcoolingTarget, Actual, and Difference. Use temperature and pressure sliders to see what happens in realtime when these values change. HVAC Buddy contains generic charts for target Superheat and Subcool as well as pressure-temperature tables for R22, R-410A, R-404A, and R-134A. Data in the PT chart is displayed on the refrigerant row and can easily be viewed by moving the pressure slider. Add or recover refrigerant to get the Actual value to within the displayed target Superheat or Subcool range.

Diagnosis tab – shows common causes for high and low superheat, subcooling.

Instructions – Several pages of detailed step by step instructions. Use the support system at for questions, comments, or concerns.

Imperial/Metric – View units in Fahrenheit/Celsius or psi/kPa. Buttons at the top of the screen permit toggling back and forth with instant redisplay of values.

Airflow – For cooling, compares a targeted difference across the coil vs. actual. Also called Delta-T or Target Evaporator Exit Temperature (TEET). Sliders change values in realtime.

System Status Report – Use the email tab to create defaults for email addresses, subject, and System Status Report introductory text. Tap the email button and these values are incorporated into a formatted page including all the parameters recorded in HVAC Buddy. Edit the email and / or add contacts from your contact list. Then on each service call it’s just a couple taps to send a personalized report.

Recent Accolades and Awards:

HVAC Buddy was recently featured by the California Association of HERS Raters and is CalHERS approved!

“Very cool app. I can see California really running with this as we have strict requirements for verification.” – John Richau, Executive Director, Calhers

“an excellent programme” – Charlie Richards

** Also available on Android **

HVAC Buddy is a suite of applications for the HVAC/R industry. We strive to make each app the best in class solution for it’s purpose. You can be confident the app you buy today will continue to be updated and improved.

HVAC GridBuddy – Coming soon. Store customers, units. Calculate and compare 30+ system operating characteristics.

HVAC Duct Calc Buddy – Powerful tool with a simple to use real-time interface to help you choose optimal duct sizes.

HVAC PT Buddy – Over 90 Refrigerant combinations and their corresponding PT relationship in Metric or Imperial units.

HVAC Psychrometric Buddy – Quickly calculate thermodynamic properties of moist air at temperatures commonly used in HVAC systems. Enter multiple sets of properties, mix air streams.


  • HVAC Buddy Screenshot
  • HVAC Buddy Screenshot

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