REFRIGERANT • PT DATA v1

R-425A

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 • —
CURVE • dew
POINTS • 381
GWP
ODP
Curves available
Dew + Bubble
Pressure range (psig)
-14.68 to 627.04
Temperature range (°F)
-180 to 200
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
0-24.4linear
2517.6linear
5042linear
7559.9linear
10074.3linear
15097.1linear
200115.2linear
250130.2linear
300143.2linear
350154.7linear
400165linear
450174.2linear
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
-40-5.1exact
-201.8exact
012.2exact
2027exact
4047.6exact
6075.2exact
80111.2exact
100157.3exact
120215.2exact
140286.9exact
Use this in Superheat/Subcool →

Data source & notes

PT asset ID
r425a
Original name
R-425A
CAS
—
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.