REFRIGERANT • PT DATA v1

R-744

PT data, curve stats, and quick routes into the field calculators. Data shown here is derived from the versioned PT asset set under /assets/pt/v1.

RefrigerantsLearnDownload JSON

At a glance

SAFETY • A1
CURVE • dew
POINTS • 141
GWP
1
ODP
0
Curves available
Dew + Bubble
Pressure range (psig)
79.88 to 954.87
Temperature range (°F)
-60 to 80
Note: PT points are stored in psig and °F. For blends, bubble and dew represent different saturation states. Always follow OEM charging procedures.

Quick actions

These routes are designed to be technician-friendly: minimal taps, prefilled context, and predictable URLs for bookmarks and sharing.

Open PT Chart
Fast lookup (pressure ↔ temp)
Open →
Browse Equipment
See equipment using this refrigerant
Open →
Superheat/Subcool
Preselect this refrigerant
Open →
Charge Calculator
Line set adjustments
Open →
Curve toggle
AutoDewBubble
Tip: For blends, evaporator saturation is typically based on dew, and condenser saturation is typically based on bubble.

Pressure → Saturation temperature (quick)

Linear interpolation between nearest points. Out-of-range values show “—”.

Pressure (psig)Sat Temp (°F)Source
100-51.3linear
150-33.9linear
200-20.1linear
250-8.4linear
3001.7linear
35010.7linear
40018.9linear
45026.3linear
Do a lookup in PT Chart →

Temperature → Saturation pressure (quick)

Useful for “I have a target saturation temp—what pressure should I see?” checks.

Temp (°F)Sat Pressure (psig)Source
-40131exact
-20200.2exact
0291exact
20407.2exact
40552.9exact
60733.1exact
80954.9exact
Use this in Superheat/Subcool →

Data source & notes

PT asset ID
r744
Original name
R-744
CAS
124-38-9
Units
psig / F (atm: 14.6959 psi)
Default curve
dew
PT index version
v1(from /assets/pt/v1/index.json)
Safety note: PT lookups are a foundational building block for charging and diagnostics, but they do not replace OEM procedures or full system context.