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.
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!
- Enter refrigerant, temps, and pressures
- The math is done for you; superheat calculations, subcooling calculations, and airflow calculations all display Target, Actual, and Difference
- Repeat steps 1-2 until all HVAC Diagnostics check out as "Okay"; send system status report VIA text message or email as needed
- Sync unit details and diagnostic reports to the cloud with FLEETGRID
Refrigerants:R-11, R-113, R-114, R-115, R-116, R-12, R-123, R-1234YF, R-1234ZE, R-124, R-125, R-1270, R-13, R-134A, R-141B, R-142B, R-143A, R-152A, R-21, R-218, R-22, R-227ea, R-23, R-236ea, R-236fa, R-245ca, R-290, R-32, R-365MFC, R-401A, R-401B, R-401C, R-402A, R-402B, R-403A, R-403B, R-404A, R-405A, R-406A, R-407A, R-407B, R-407C, R-407D, R-407E, R-407F, R-408A, R-409A, R-409B, R-41, R-410A, R-410B, R-411A, R-411B, R-412A, R-413A, R-414A, R-414B, R-415A, R-415B, R-416A, R-417A, R-418A, R-419A, R-420A, R-421A, R-421B, R-422A, R-422B, R-422C, R-422D, R-423A, R-424A, R-425A, R-426A, R-427A, R-428A, R-429A, R-430A, R-431A, R-432A, R-433A, R-434A, R-435A, R-436A, R-436B, R-437A, R-438A, R-441A, R-442A, R-443A, R-444A, R-448A, R-449A, R-500, R-501, R-502, R-503, R-504, R-507A, R-508A, R-508B, R-509A, R-510A, R-512A, R-600, R-600A, R-601, R-601A, R-717, R-744, R-E170
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
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