REFRIGERANT • PT DATA v1

R-409A

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 • bubble
POINTS • 463
GWP
1585
ODP
0.05
Curves available
Dew + Bubble
Pressure range (psig)
-14.7 to 621.65
Temperature range (°F)
-242 to 220
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
0-30linear
2514.8linear
5041linear
7560.4linear
10076.1linear
150101.1linear
200121linear
250137.8linear
300152.5linear
350165.5linear
400177.3linear
450188.1linear
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
-40-3.3exact
-204exact
014.6exact
2029.2exact
4048.9exact
6074.5exact
80107exact
100147.6exact
120197.2exact
140257exact
Use this in Superheat/Subcool →

Data source & notes

PT asset ID
r409a
Original name
R-409A
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.