Make your job easier with our refrigerant charging and diagnostic HVAC app - 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 Subcooling forTXV/EXV systems • Calculates targeted vs. actual Subcooling • Over 100 refrigerants including newer azeotropic blends • Airflow / Delta-T / TEET Calculation • Email System Status Report • Imperial (IP) or Metric (SI) • Use Target Superheat and Subcooling tables or enter manually • Update all values with realtime output • Line Chart displays historical values based on input changes or elapsed time 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! Overall Process: • Enter refrigerant, temps, and pressures • The math is done for you to display Superheat, Subcooling and Airflow Target, Actual, and Difference • Email all readings (detail) Other Features: • Flexible units - psi, kPa, Fahrenheit, Celsius, etc. • Calculates Superheat and Subcooling targets • Airflow - For cooling, compares a targeted difference across the coil vs. actual. Also called Delta-T or Target Evaporator Exit Temperature (TEET). • 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. Accolades and Awards: ---------------------------- HVAC Buddy® ranked #2 in ContractingBusiness.com readers choice of top 10 contracting apps. HVAC Buddy® was 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 HVAC Buddy® Load Calc - Now Available HVAC Buddy® Duct Calc - Powerful tool with a simple to use real-time interface to help you choose optimal duct sizes. HVAC Buddy® Pressure Temperature - Over 90 Refrigerant combinations and their corresponding PT relationship in Metric or Imperial units. HVAC Buddy® Psychrometric - Quickly calculate thermodynamic properties of moist air at temperatures commonly used in HVAC systems. Enter multiple sets of properties, mix air streams.