Live AC Simulator (Interactive & Free)

Play with a live AC system and watch superheat & subcooling change in real-time as you adjust coil cleanliness, airflow, charge, and TXV. Adjust indoor/outdoor temps, blower CFM, TXV position, and charge to see real-time effects on suction & liquid pressure, SAT, superheat, subcooling, supply/return temps, ΔT, and CFM. Watch the system diagram respond: TXV opens/closes, coils and filter get “dirtier,” and visual cues show icing and compressor floodback risk—with alarms firing directly in the panel. What you’ll learn How TXV position and charge impact SH/SC and coil behavior Diagnosing low ΔT / high ΔT, low suction, high head Spotting floodback (low SH) and freeze risk/ice buildup conditions Effects of dirty filter/evap/cond coils on system performance Who it’s for HVAC techs & apprentices Instructors & training centers Home performance and QA/QC Key features Real-time readings at the exact component locations in the graphic Alarm panel with Floodback Risk, Freeze Risk, ICE BUILDUP, Low Suction, High Head, Charge Adjust, ΔT alerts Visual TXV animation (open/close) and coil/filter dirt overlays One-click reset to baseline Try it in your class or shop: tweak one variable at a time and challenge learners to predict changes before they happen. 00:00 Why an AC simulator (and how it helps) 00:55 Free link & how to access the simulator 01:16 Glossary: quick definitions (SH, SC, SAT) 01:34 Simulator setup: refrigerant & system tonnage 01:52 Airflow target (CFM per ton) & target subcooling 02:14 Indoor/Outdoor temps and their effects 02:29 Blower speed changes and system response 02:51 Charge adjustments (under/over) + alarms 03:12 One-click reset back to baseline 03:19 Dirty filter/evap/condenser controls 03:36 Blower types: ECM vs ECM-torque vs PSC 04:22 Low airflow → evaporator icing demo 04:39 Dirty condenser → rising head pressure 04:45 TXV manual override (stuck open/closed) 05:07 “Why it moved” — tracing cause & effect 05:54 Wrap-up & try the simulator