R1234yf pressure–temperature chart

R1234yf is a pure fluid. Its normal boiling point is -29.5 °C; the critical pressure is 33.8 bar. At the AHRI 540 air-conditioning rating point — 7.2 °C evaporating, 54.4 °C condensing — the saturation pressures are 4.00 and 14.44 bar, a pressure ratio of 3.61.

Units: SI · US customary

Saturation table, -75 to 90 °C

°C	kPa abs	bar abs	psig	h_fg kJ/kg	ρ liquid kg/m³	ρ vapour kg/m³
-75	7.9	0.079	-13.6	203.4	1383	0.55
-70	11.1	0.111	-13.1	201.1	1371	0.76
-65	15.4	0.154	-12.5	198.7	1358	1.03
-60	21.0	0.210	-11.6	196.3	1345	1.37
-55	28.2	0.282	-10.6	193.9	1332	1.81
-50	37.2	0.372	-9.3	191.4	1319	2.34
-45	48.4	0.484	-7.7	188.9	1306	2.99
-40	62.2	0.622	-5.7	186.4	1292	3.78
-35	78.9	0.789	-3.3	183.8	1278	4.72
-30	98.9	0.989	-0.3	181.1	1265	5.84
-25	122.8	1.228	3.1	178.4	1251	7.16
-20	150.9	1.509	7.2	175.6	1236	8.70
-15	183.7	1.837	11.9	172.7	1222	10.48
-10	221.8	2.218	17.5	169.7	1207	12.55
-5	265.7	2.657	23.8	166.7	1192	14.92
0	315.9	3.159	31.1	163.5	1176	17.63
5	373.0	3.730	39.4	160.2	1160	20.73
10	437.6	4.376	48.8	156.7	1144	24.25
15	510.4	5.104	59.3	153.2	1127	28.24
20	591.8	5.918	71.1	149.4	1110	32.77
25	682.7	6.827	84.3	145.5	1092	37.89
30	783.6	7.836	99.0	141.4	1073	43.68
35	895.3	8.953	115.2	137.0	1054	50.24
40	1018.5	10.185	133.0	132.4	1034	57.67
45	1153.9	11.539	152.7	127.5	1012	66.12
50	1302.3	13.023	174.2	122.3	990	75.75
55	1464.7	14.647	197.7	116.7	966	86.80
60	1641.8	16.418	223.4	110.6	941	99.55
65	1834.7	18.347	251.4	104.0	913	114.43
70	2044.5	20.445	281.8	96.6	882	132.04
75	2272.2	22.722	314.9	88.3	848	153.32
80	2519.5	25.195	350.7	78.6	809	179.91
85	2788.1	27.881	389.7	66.9	761	215.17
90	3080.8	30.808	432.1	50.8	696	268.81

Pressures are absolute in kPa and bar, gauge in psig (at 101.325 kPa atmospheric); h_fg is the latent heat of vaporisation at the dew pressure; densities are saturated liquid and saturated vapour. Computed with CoolProp 8.0.0, the open-source property library the solver runs on, sampled every 0.5 K and printed every 5 K — the same tables the builder reads when it solves a circuit on R1234yf.

R1234yf compressors in the catalog

85 compressor maps run on R1234yf, each a page with its AHRI 540 / EN 12900 map across the published envelope, and each selectable in the builder. Read any of them at your own evaporating and condensing temperatures →

Copeland — 22 maps: YB (8), YH (8), YBD (6)
Tecumseh — 53 maps: AJ (25), AG (10), FH (9), AE (6), RG (2)
Embraco — 10 maps: FFU (2), FGS (2), FMFT (2), VEGY (2)

The largest at the air-conditioning point

Copeland YH16K1E-TFD (R1234yf scroll, 60 Hz, HP) — 15.6 kW at 7.2 / 54.4 °C
Copeland YH13K1E-TFD (R1234yf scroll, 60 Hz, HP) — 12.2 kW at 7.2 / 54.4 °C
Tecumseh AG4547N-TZ1A (R1234yf hermetic, HBP, EN12900, 60 Hz) — 10.6 kW at 7.2 / 54.4 °C
Copeland YH11K1E-TFD (R1234yf scroll, 60 Hz, HP) — 10.4 kW at 7.2 / 54.4 °C
Copeland YH13K1E-PFJ (R1234yf scroll, 50 Hz, HP) — 9.9 kW at 7.2 / 54.4 °C
Tecumseh AG4543N-TZ1A (R1234yf hermetic, HBP, EN12900, 60 Hz) — 9.6 kW at 7.2 / 54.4 °C
Tecumseh AG4547N-TZ1A (R1234yf hermetic, HBP, EN12900, 50 Hz) — 9.1 kW at 7.2 / 54.4 °C
Tecumseh AG4537N-TZ1A (R1234yf hermetic, HBP, EN12900, 60 Hz) — 8.6 kW at 7.2 / 54.4 °C
Copeland YH11K1E-PFJ (R1234yf scroll, 50 Hz, HP) — 8.4 kW at 7.2 / 54.4 °C
Copeland YH09K1E-TFD (R1234yf scroll, 60 Hz, HP) — 8.2 kW at 7.2 / 54.4 °C

Open the R1234yf chart in the app — the pressure–temperature line drawn, readable at any point, with a compressor's envelope over it — or open the builder and draw a circuit on R1234yf: the solver finds its evaporating and condensing temperatures from the coils and the compressor's map.