Subcooling Calculator (TXV & Fixed) — R-410A / R-454B
Track Why It Moved
Explain This Change
Suction pressure
Liquid pressure
Evaporator Saturation Temperature
Condenser Saturation Temperature
Delta T
Subcooling (SC)
Superheat (SH)
Suction line temp
Liquid line temp
Click on a metric to track. Change something in the SIM. Then click
Explain This Change
.
Refrigerant Notice
Alarm Panel
Starved Coil
Compressor Flood Back Risk
Charge
System Off. No Load. Indoor Temperature Too Low.
Low Suction
High Head
Low ΔT
High ΔT
Freeze Risk
ICE BUILDUP
Freeze Risk
Low Suction
High Head
Reset
Refrigerant
R410A
R22
R32
R454B
R407C
R134a
Tonnage CFM (target)
1.5
2.0
2.5
3.0
3.5
4.0
5.0
350
400
450
Target SC (°F)
Units
°F
°C
Suction (PSIG)
100
10°F SH
Suction Line
45°F
Evap Sat:
35
°F
Estimated ΔT
--
°F
Liquid (PSIG)
250
8°F SC
Liquid Line
82°F
Cond Sat:
90
°F
Estimated ΔT
--
°F
Outdoor (°F)
−
85
+
Indoor Return (°F)
−
74
--
+
Blower CFM (actual)
−
1200
+
Charge (%)
−
100
+
Dirty Air Filter
ECM (Variable/Const. CFM)
ECM (Torque)
PSC
CLEAN
FILTHY
Dirty Evaporator Coil
CLEAN
FILTHY
Dirty Condenser Coil
CLEAN
FILTHY
TXV Position
TXV:
50%
TXV Mode
Auto Operation
Manual Override
More Closed
20%
40%
60%
80%
More Open
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System Diagram
Evaporator coil
CFMs:
--
blower motor
air filter
return air temp:
--
supply air temp:
--
Delta T
valve
TXV
TXV valve position:
--
compressor
suction
pressure
--
PSIG
suction line temp:
--
head pressure:
--
condenser coil
liquid line temp:
--
subcooling:
--
Evap SAT temp:
--
Superheat:
--
condenser SAT temp:
--
outdoor air temp:
--
Delta T:
--
°F