122
Modern
Refrigeration
and
Air
Conditioning
Refrigerant Properties and Applications
Refrigerant Type Name Formula
Cylinder
Color
Boiling
Point*
°F (°C)
Operating Pressures** Replaces/
Replaced
By
Lubricant*** Application
Evaporating Condensing
R-11 CFC Trichlorofluoro-
methane
CClF
3
75 (24) 23.9 in. Hg
vacuum
3.5 psig R-123 AB/MO Large air conditioning
systems, low-pressure
centrifugal chillers
R-12 CFC Dichlorodifluoro-
methane
CCl2F
2
–22
(–30)
11.8 psig 93.3 psig R-134a,
R-401A,
R-401B,
R-409A
AB/MO Domestic refrigeration
and air conditioning,
automotive air
conditioning
R-22 HCFC Chlorodifluoro-
methane
CHFCl
2
–41
(–41)
28.3 psig 158.2 psig R-404A,
R-407C
POE/AB/MO Residential and
commercial air
conditioning, frozen-
food storage,
supermarket display
cases
R-123 HCFC 2,2-dichloro-1,1,
1-trifluoroethane
CHClCF
2 3
82 (28) 25.2 in. Hg
vacuum
1.2 psig R-11 AB/MO Low-pressure
centrifugal chillers
R-134a HFC 1,1,1,
2-tetrafluoro-
ethane
CHFCF
2 3
–15
(–26)
9.1 psig 97.0 psig R-12 POE/PAG Medium- and
high-temperature
refrigeration, chiller
equipment, domestic
appliances, automotive
air conditioning
R-401A HCFC
zeotropic
blend
53% R-22 / 13%
R-152a / 34%
R-124
CHFCl
2
+
CHCHF
3 2
+
CHClFCF
3
–30
(–34)
10.1–16.1
psig
96.9–112.4
psig
R-12,
R-500
POE/AB Walk-in coolers,
beverage dispensers,
vending machines,
supermarket systems
R-404A HFC
zeotropic
blend
44% R-125 /
52% R-143a /
4% R-134a
CHFCF
2 3
+
CHCF
3 3
+
CHFCF
2 3
–51
(–46)
37.7–38.8
psig
190.5–192.5
psig
R-22,
R-502
POE Low- and medium-
temperature
commercial
refrigeration
R-407C HFC
zeotropic
blend
23% R-32 / 25%
R-125 / 52%
R-134a
CHF
2 2
+
CHFCF
2 3
+
CHFCF
2 3
–44
(–42)
23.5–34.3
psig
152.9–179.8
psig
R-22 POE Residential and
commercial heat
pumps and air
conditioners,
medium temperature
applications