HVAC PT Charts
RefrigerantASHRAE R-407A

R407A PT Chart

Updated October 12, 2026

R-407A

A1 Lower toxicity, no flame propagationHFC blend AIM Act HFC
R-407A AHRI Guideline N service cylinderIllustration of a refrigerant cylinder painted light green gray (RAL 7044), the color AHRI Guideline N-2017 calls for on all new refrigerant containers from 2020. Label: R407A, safety class A1, GWP 2,107. No red band: AHRI Guideline N-2017 reserves it for flammable refrigerants.R407AA1GWP 2,107
Illustration of a refrigerant cylinder painted light green gray (RAL 7044), the color AHRI Guideline N-2017 calls for on all new refrigerant containers from 2020[1], section 4.8. Label: R-407A, safety class A1, GWP 2,107. No red band: AHRI Guideline N-2017 reserves it for flammable refrigerants[1], section 4.7.
R-32/R-125/R-134a (20/40/40)

Ternary HFC blend (20% R-32 / 40% R-125 / 40% R-134a). Branded as Arkema Forane 407A. ASHRAE A1, GWP 2,107. Commercial refrigeration alternative to R-407C and R-404A — higher R-32 content gives better low-temperature capacity than R-407C.

R-407A saturation pressure splits across its glide: dew 69.4 PSIG at 40°F, bubble 237.6 PSIG at 100°F, and 127.0–148.8 PSIG dew-to-bubble at 70°F. Use the dew column for superheat and the bubble column for subcooling. The full table below runs from −40°F to 150°F in 1°F steps.

Not yet checked against an independent source.

Saturation @ 70°F
148.8 / 127.0 PSIG
GWP (100-yr)
2,107 US EPA value, 40 CFR 84.64(b)
Temperature glide
10.0°F
Boiling point
bubble −49.0°F / dew −37.5°F
Sourced facts
Temperature glide
10.0°F at a 40°F dew point[3]
R-407A PT calculator Superheat

R-407A PT chart — printable saturation table

Looking for the R-407A PT chart PDF for shop reference? The complete pressure-temperature saturation table is below: every 1° increment from −40°F to 150°F (or to the refrigerant's critical temperature). Use the Print / Save as PDF button in the table header to download a clean, table-only PDF (the rest of the page is hidden from the print output).

R-407A PT Chart — Pressure-Temperature Saturation Table

Computed with CoolProp 7.2.0 in 1°F steps · hvacptcharts.com

R-407A · 1° increments · °F / PSIG
Tinted rows: 32°F H₂O freeze
R-407A pressure-temperature saturation table in Fahrenheit and PSIG
Temp (°F)Bubble (PSIG)Dew (PSIG)
−40°F 3.92.0 in. Hg vac.
−39°F 4.41.2 in. Hg vac.
−38°F 4.90.4 in. Hg vac.
−37°F 5.40.2
−36°F 5.90.6
−35°F 6.41.0
−34°F 7.01.5
−33°F 7.51.9
−32°F 8.12.3
−31°F 8.62.8
−30°F 9.23.3
−29°F 9.83.7
−28°F 10.44.2
−27°F 11.04.7
−26°F 11.65.2
−25°F 12.25.8
−24°F 12.96.3
−23°F 13.56.8
−22°F 14.27.4
−21°F 14.97.9
−20°F 15.68.5
−19°F 16.39.1
−18°F 17.09.7
−17°F 17.710.3
−16°F 18.510.9
−15°F 19.211.5
−14°F 20.012.2
−13°F 20.812.8
−12°F 21.613.5
−11°F 22.414.2
−10°F 23.214.9
−9°F 24.015.6
−8°F 24.916.3
−7°F 25.817.0
−6°F 26.617.8
−5°F 27.518.5
−4°F 28.419.3
−3°F 29.420.1
−2°F 30.320.9
−1°F 31.321.7
0°F 32.222.5
1°F 33.223.4
2°F 34.224.2
3°F 35.225.1
4°F 36.326.0
5°F 37.326.9
6°F 38.427.8
7°F 39.528.7
8°F 40.629.7
9°F 41.730.6
10°F 42.831.6
11°F 44.032.6
12°F 45.133.6
13°F 46.334.6
14°F 47.535.7
15°F 48.736.7
16°F 50.037.8
17°F 51.238.9
18°F 52.540.0
19°F 53.841.2
20°F 55.142.3
21°F 56.543.5
22°F 57.844.7
23°F 59.245.9
24°F 60.647.1
25°F 62.048.3
26°F 63.449.6
27°F 64.950.9
28°F 66.352.2
29°F 67.853.5
30°F 69.354.8
31°F 70.956.2
32°F H₂O freeze72.457.6
33°F 74.059.0
34°F 75.660.4
35°F 77.261.8
36°F 78.863.3
37°F 80.564.8
38°F 82.266.3
39°F 83.967.8
40°F 85.669.4
41°F 87.470.9
42°F 89.172.5
43°F 90.974.1
44°F 92.875.8
45°F 94.677.4
46°F 96.579.1
47°F 98.480.8
48°F 100.382.6
49°F 102.284.3
50°F 104.286.1
51°F 106.287.9
52°F 108.289.7
53°F 110.291.6
54°F 112.393.4
55°F 114.495.3
56°F 116.597.3
57°F 118.699.2
58°F 120.8101.2
59°F 123.0103.2
60°F 125.2105.2
61°F 127.4107.3
62°F 129.7109.3
63°F 132.0111.5
64°F 134.3113.6
65°F 136.7115.7
66°F 139.0117.9
67°F 141.4120.2
68°F 143.9122.4
69°F 146.3124.7
70°F 148.8127.0
71°F 151.3129.3
72°F 153.9131.7
73°F 156.5134.0
74°F 159.1136.5
75°F 161.7138.9
76°F 164.4141.4
77°F 167.0143.9
78°F 169.8146.4
79°F 172.5149.0
80°F 175.3151.6
81°F 178.1154.2
82°F 181.0156.9
83°F 183.8159.6
84°F 186.7162.3
85°F 189.7165.1
86°F 192.6167.8
87°F 195.6170.7
88°F 198.7173.5
89°F 201.7176.4
90°F 204.8179.3
91°F 208.0182.3
92°F 211.1185.3
93°F 214.3188.3
94°F 217.6191.4
95°F 220.8194.4
96°F 224.1197.6
97°F 227.4200.7
98°F 230.8203.9
99°F 234.2207.2
100°F 237.6210.4
101°F 241.1213.8
102°F 244.6217.1
103°F 248.2220.5
104°F 251.7223.9
105°F 255.3227.4
106°F 259.0230.9
107°F 262.7234.4
108°F 266.4238.0
109°F 270.1241.6
110°F 273.9245.2
111°F 277.8248.9
112°F 281.6252.7
113°F 285.5256.4
114°F 289.5260.2
115°F 293.5264.1
116°F 297.5268.0
117°F 301.5271.9
118°F 305.6275.9
119°F 309.8279.9
120°F 314.0284.0
121°F 318.2288.1
122°F 322.4292.3
123°F 326.7296.5
124°F 331.1300.7
125°F 335.4305.0
126°F 339.9309.3
127°F 344.3313.7
128°F 348.8318.1
129°F 353.4322.6
130°F 357.9327.1
131°F 362.6331.7
132°F 367.2336.3
133°F 372.0341.0
134°F 376.7345.7
135°F 381.5350.5
136°F 386.3355.3
137°F 391.2360.2
138°F 396.2365.1
139°F 401.1370.0
140°F 406.2375.1
141°F 411.2380.1
142°F 416.3385.3
143°F 421.5390.4
144°F 426.7395.7
145°F 431.9401.0
146°F 437.2406.3
147°F 442.6411.7
148°F 448.0417.2
149°F 453.4422.7
150°F 458.9428.3
CoolProp 7.2.0 · PSIG/kPa = gauge · PSIA = PSIG + 14.6959 · kPa(abs) = kPa(gauge) + 101.325

Full saturation values at 1° increments. Toggle between °F / PSIG and °C / kPa. Use Print / Save as PDF for laminated shop reference, or download the CSV / JSON below for use in other tools. R-407A PT chart data: CoolProp 7.2.0 (published Helmholtz equations of state / mixture models — see the source citations above).

A1
Lower toxicity, no flame propagation

Lower toxicity (Occupational Exposure Limit ≥ 400 ppm). No flame propagation in air at standard atmospheric pressure and 60°C. R-134a, R-22, R-410A, R-404A, R-744 (CO2) are A1.

Flammability
None (no flame propagation)
Toxicity
Lower (OEL ≥ 400 ppm)

Classification per ANSI/ASHRAE Standard 34-2022. See full reference.

Saturation pressure-temperature curve

Pressure
Temperature
°F
70°F: 148.8 PSIG (bubble)127.0 PSIG (dew)
Quick lookup — R-407A
148.8 / 127.0PSIG(1,026 / 875 kPa)
Bubble Dew· zeotropic blend
Range: −40 to 150°F Open full PT calculator →
Common service temperatures
32°F
72 / 58PSIG
Freezing
45°F
95 / 77PSIG
Heat-pump heat
70°F
149 / 127PSIG
Standard
75°F
162 / 139PSIG
Test ref
80°F
175 / 152PSIG
Warm
95°F
221 / 194PSIG
Summer peak

Saturation values from CoolProp 7.2.0 mixture model: R-32/R-125/R-134a, 20/40/40% by mass[3]. Operating pressure on a running system differs — see the operating-pressure references for in-use values.

At a glance

Chemistry

R-32/R-125/R-134a (20/40/40)
Ternary HFC blend

Lubricant compatibility

POEMO

POE required. Used as a medium-/low-temperature R-22 retrofit, also as a lower-GWP alternative to R-404A in commercial refrigeration. Significant temperature glide (~5-6 K).

Blend composition

  • R-32 20.0%
  • R-125 40.0%
  • R-134a 40.0%

Trade names

  • Forane 407A — Arkema

Common applications

  • Commercial refrigeration (medium and low temp)
  • R-22 / R-404A retrofit
  • Supermarket display cases

Properties

  • Boiling point (1 atm)
    bubble −49.0°F (−45.0°C), dew −37.5°F (−38.6°C)
  • Critical point
    No single point — blend critical locus
  • Molar mass
    90.11 g/mol
  • Temperature glide
    10.0°F
  • ODP
    0
  • GWP (100-yr)
    2,107 US EPA value, 40 CFR 84.64(b) IPCC: AR4 2,107 · AR5 1,923 · AR6 2,262
  • New-equipment status (US)
    Restricted in 45 new-equipment categories — US new-equipment rules (40 CFR 84.54).

What is R-407A?

R-407A is a ternary HFC blend developed by Arkema for commercial refrigeration applications. The composition is similar to R-407C (same three components — R-32, R-125, R-134a) but with different proportions: less R-134a, more R-32 and R-125. This composition difference shifts the blend's pressure envelope and capacity toward commercial refrigeration (medium and low temperature) rather than R-407C's residential AC retrofit position.

R-407A occupies a niche between R-407C (R-22 retrofit for AC) and R-404A (commercial refrigeration). For commercial refrigeration applications where R-407C is insufficient capacity but R-404A's GWP is restrictive, R-407A is a middle-ground option — though both R-407A and R-407C have been largely displaced by the lower-GWP R-448A and R-449A in modern commercial refrigeration.

Where R-407A is used

  • Commercial refrigeration medium and low temperature (supermarket cases, walk-in coolers)
  • R-22 retrofit (commercial refrigeration applications)
  • R-404A retrofit (lower-GWP alternative within the HFC family)
  • Some industrial chiller applications

Regulatory & phase-down status

R-407A's GWP of 2,107 is above the applicable 40 CFR 84.54 limits for the commercial refrigeration subsectors where it would be used. For new installations R-407A is not the choice; for existing R-407A or R-404A equipment service it remains available.

Service notes

POE oil required. Significant temperature glide (~9-10°F at typical operating pressures); TXV operation may require attention. Use the dew curve for superheat measurement.

Temperature glide

Temperature glide across evaporator at constant pressureR-407A at 86 PSIG suction→ refrigerant flow →Entry: 40.0°F Mid: 44.9°F Exit: 49.7°F Glide = 9.7°F Position along evaporator coil40°F 50°F

R-407A is a zeotropic blend: at constant pressure it boils across a temperature range rather than at a single point. Use the dew curve for superheat, bubble curve for subcooling.

Operating cycle

CompressorRaises pressureCondenserRejects heat to outdoorsExpansion deviceDrops pressureEvaporatorAbsorbs heat from indoorsDischarge: 274 PSIG, 180°F Liquid: 274 PSIG, 100°F Evap inlet: 69 PSIG, 40°F (two-phase)Suction: 69 PSIG, 50°F Example cycle for R-407A (40°F evap, 110°F condenser, 10°F superheat, 10°F subcooling)

Phase-down timeline

R-407A contains HFC-32, HFC-125 and HFC-134a, regulated substances under the AIM Act. Its GWP under 40 CFR 84.64 is 2,107, at or above the limit in 45 of the categories 40 CFR 84.54 restricts (listed under “All 84.54 categories restricting R-407A”).

  • From January 1, 2027 — new supermarket systems: installation restricted (GWP ≥ 1,400).
  • From January 1, 2032 — new supermarket systems: installation restricted at GWP ≥ 150 for systems with 200 lb or more of refrigerant (except the high-temperature side of a cascade system), and at GWP ≥ 300 for systems under 200 lb and for the high-temperature side of a cascade system.

HFC production & consumption allowances step down to 30% of baseline in 2029–2033, 20% of baseline in 2034–2035, and 15% of baseline in 2036 and later (42 U.S.C. 7675(e)(2)(C)).

Full 40 CFR 84.54 new-equipment rules for R-407A →

US new-equipment rules (40 CFR 84.54)

R-407A contains HFC-32, HFC-125 and HFC-134a, regulated substances under the AIM Act. Under 40 CFR 84.64(b) its GWP is 2,107: each component's GWP times its mass fraction; components without a GWP under 84.64 are left out (84.64(c)). That value is compared against each 40 CFR 84.54 subsector limit below.

EffectiveEquipment subsectorLimitRestriction
January 1, 2027Supermarket systemsGWP ≥ 1,400Installation(c)(12)(i)
January 1, 2032Supermarket systemsGWP ≥ 150 (200 lb or greater, not the cascade high side); GWP ≥ 300 (less than 200 lb); GWP ≥ 300 (cascade high side)Installation(c)(12)(ii)
All 84.54 categories restricting R-407A (45)
Refrigeration, air conditioning & heat pumps (38)
January 1, 2025Self-contained residential & light-commercial AC and heat pump productsGWP ≥ 700(a)(1)
January 1, 2025Chillers for comfort coolingGWP ≥ 700(a)(10)(i)
January 1, 2025Chillers for ice rinksGWP ≥ 700(a)(10)(ii)
January 1, 2025Residential dehumidifiersGWP ≥ 700(a)(2)
January 1, 2025Household refrigerators and freezersGWP ≥ 150(a)(3)
January 1, 2025Retail food refrigeration — stand-alone unitsGWP ≥ 150(a)(4)
January 1, 2025Vending machinesGWP ≥ 150(a)(5)
January 1, 2025Residential & light-commercial AC and heat pump systems (except VRF)GWP ≥ 700(c)(1)
January 1, 2025Chillers for comfort coolingGWP ≥ 700(c)(3)
January 1, 2025Ice rinksGWP ≥ 700(c)(4)
January 1, 2026Chillers for industrial process refrigeration, fluid exiting the chiller warmer than −22°F (−30°C)GWP ≥ 700(a)(10)(iii)
January 1, 2026Industrial process refrigeration products (non-chiller), charge 200 lb or greater, refrigerant entering the evaporator warmer than −22°F (−30°C)GWP ≥ 150(a)(12)(i)
January 1, 2026Industrial process refrigeration products (non-chiller), charge less than 200 lb, refrigerant entering the evaporator warmer than −22°F (−30°C)GWP ≥ 300(a)(12)(ii)
January 1, 2026Ice makers — batch type up to 1,000 lb of ice per 24 h and continuous type up to 1,200 lb per 24 hGWP ≥ 150(a)(8)(i)
January 1, 2026Industrial process refrigeration systems (non-chiller), charge 200 lb or greater, evaporator inlet warmer than −22°F (−30°C), not the high-temperature side of a cascadeGWP ≥ 150(c)(10)(i)
January 1, 2026Industrial process refrigeration systems (non-chiller), charge less than 200 lb, evaporator inlet warmer than −22°F (−30°C)GWP ≥ 300(c)(10)(ii)
January 1, 2026Industrial process refrigeration — high-temperature side of cascade systems, evaporator inlet warmer than −22°F (−30°C)GWP ≥ 300(c)(10)(iii)
January 1, 2026Variable refrigerant flow (VRF) residential & light-commercial AC and heat pump systemsGWP ≥ 700(c)(2)
January 1, 2026Chillers for industrial process refrigeration, fluid exiting the chiller warmer than −22°F (−30°C)GWP ≥ 700(c)(5)(i)
July 27, 2026Refrigerated transport — intermodal containers with a box temperature of −31°F (−35°C) or higherGWP ≥ 700(a)(6)
July 27, 2026Retail food refrigeration — remote condensing unitsGWP ≥ 1,400(c)(11)(i)
July 27, 2026Refrigerated transport — intermodal containers with a box temperature of −31°F (−35°C) or higherGWP ≥ 700(c)(7)
July 27, 2026Cold storage warehouse systemsGWP ≥ 700(c)(9)(i)
January 1, 2027Self-contained products in data center, information technology equipment facility, and computer room coolingGWP ≥ 700(a)(11)
January 1, 2027Ice makers — batch type above 1,000 lb of ice per 24 h and continuous type above 1,200 lb per 24 hlisted refrigerant(a)(8)(ii)
January 1, 2027Refrigerated food processing and dispensing products outside the scope of UL 621, charge 500 g or lessGWP ≥ 150(a)(9)(i)
January 1, 2027Refrigerated food processing and dispensing products outside the scope of UL 621, charge greater than 500 glisted refrigerant(a)(9)(ii)
January 1, 2027Supermarket systemsGWP ≥ 1,400(c)(12)(i)
January 1, 2027Data center, information technology equipment facility, and computer room cooling systemsGWP ≥ 700(c)(13)
January 1, 2027Refrigerated food processing and dispensing equipment with a remote condenserlisted refrigerant(c)(15)
January 1, 2028Chillers for industrial process refrigeration, fluid exiting the chiller from −58°F to −22°F (−50°C to −30°C)GWP ≥ 700(a)(10)(iv)
January 1, 2028Industrial process refrigeration products (non-chiller), refrigerant entering the evaporator from −58°F to −22°F (−50°C to −30°C)GWP ≥ 700(a)(12)(iii)
January 1, 2028Refrigerated food processing and dispensing products within the scope of UL 621 (ice cream makers)listed refrigerant(a)(9)(iii)
January 1, 2028Industrial process refrigeration systems (non-chiller), evaporator inlet from −58°F to −22°F (−50°C to −30°C)GWP ≥ 700(c)(10)(iv)
January 1, 2028Chillers for industrial process refrigeration, fluid exiting the chiller from −58°F to −22°F (−50°C to −30°C)GWP ≥ 700(c)(6)(i)
January 1, 2032Retail food refrigeration — remote condensing unitsGWP ≥ 150 (200 lb or greater, not the cascade high side); GWP ≥ 300 (less than 200 lb); GWP ≥ 300 (cascade high side)(c)(11)(ii)
January 1, 2032Supermarket systemsGWP ≥ 150 (200 lb or greater, not the cascade high side); GWP ≥ 300 (less than 200 lb); GWP ≥ 300 (cascade high side)(c)(12)(ii)
January 1, 2032Cold storage warehouse systemsGWP ≥ 150 (200 lb or greater, not the cascade high side); GWP ≥ 300 (less than 200 lb); GWP ≥ 300 (cascade high side)(c)(9)(ii)
Motor vehicle air conditioning (3)
October 24, 2024Motor vehicle air-conditioning in Model Year 2025 and later light-duty passenger cars and trucks (gross vehicle weight rating under 8,500 lb)GWP ≥ 150(a)(13)(i)
Model Year 2028Motor vehicle air-conditioning in medium-duty passenger vehicles, heavy-duty pickup trucks and complete heavy-duty vans whose air-conditioning will not be modified by upfittersGWP ≥ 150(a)(13)(ii)
January 1, 2028Motor vehicle air-conditioning in certain nonroad vehicles (agricultural tractors over 40 horsepower; self-propelled agricultural machinery; compact equipment; construction, forestry and mining equipment; and commercial utility vehicles)GWP ≥ 150(a)(13)(iii)
Foam blowing agents (2)
January 1, 2025Foam products: rigid polyurethane appliance foam, commercial refrigeration foam, laminated boardstock, marine flotation foam, sandwich panels, slabstock; flexible polyurethane; integral skin polyurethane; polystyrene (extruded boardstock, billet, extruded sheet); phenolic insulation board and bunstock; polyisocyanurate laminated boardstock; polyolefin; rigid polyurethane spray foamGWP ≥ 150(a)(14)
January 1, 2026Foam products in the (a)(14) formulations for use in space and military applicationsGWP ≥ 150(a)(15)
Aerosol propellants / solvents (2)
January 1, 2025Aerosol productsGWP ≥ 150(a)(16)(i)
January 1, 2028Aerosol products (all, except defense sprays as defined in 84.3)GWP ≥ 150(a)(16)(ii)

Servicing. 40 CFR 84.54 restricts new manufacture/import, later sale/distribution, and installation. "Installation" is defined in 84.54(e); repairing or servicing existing R-407A equipment is not an installation unless it meets 84.54(e), so existing systems can keep being serviced. From January 1, 2029, servicing or repairing R-407A equipment in supermarket systems, refrigerated transport or automatic commercial ice makers must be done with reclaimed refrigerant[2].

EU (retail-food / cold-storage)

Under Regulation (EU) No 517/2014, since replaced by (EU) 2024/573, applying from March 11, 2024 (compared against the AR4 headline GWP), R-407A's GWP is at or above the limit in:

  • Annex III row 11: Refrigerators and freezers for commercial use (hermetically sealed equipment) — GWP ≥ 150, from January 1, 2022.
  • Annex III row 13: Multipack centralised refrigeration systems for commercial use with a rated capacity of 40 kW or more — GWP ≥ 150, from January 1, 2022 (the primary refrigerant circuit of a cascade system may use GWP below 1,500).

Regulation (EU) No 517/2014.

Source: 40 CFR 84.54, current through 91 FR 31329 (May 26, 2026). Installation defined at 40 CFR 84.54(e).

Global warming potential, in context

Commercial refrigeration — medium temperature

R-7441R-516A140R-454C146R-455A146R-450A601R-513A630R-448A1.4kR-449A1.4kR-407C1.8kR-221.8kR-407F1.8kR-407A2.1kR-404A3.9k

Retrofit and replacement paths

R-407A replaces

Replacements for R-407A

R-407A vs R-22, R-404A, R-449A, R-455A: saturation pressure

Saturation pressure (PSIG, gauge) for R-407A vs R-22, R-404A, R-449A, R-455A — zeotropic blends shown as dew / bubble. Each column shows the percent difference from R-407A. Source: CoolProp 7.2.0 dataset.
TempR-407AR-22R-404AR-449AR-455A
0°F22.5 / 32.224.0(−25%)33.7(+4%)24.2 / 33.4(+4%)22.3 / 44.1(+37%)
40°F69.4 / 85.668.6(−20%)86.9(+1%)71.6 / 87.4(+2%)66.9 / 103.3(+21%)
70°F127.0 / 148.8121.4(−18%)149.3(+0%)129.4 / 151.0(+1%)121.1 / 170.1(+14%)
100°F210.4 / 237.6195.9(−18%)236.8(−0%)212.7 / 240.0(+1%)199.6 / 260.7(+10%)

Frequently asked

›How does R-407A compare to R-407C?

Same components (R-32, R-125, R-134a) with different proportions. R-407C is 23/25/52 (R-134a-dominant), positioning it as an R-22 AC retrofit. R-407A is 20/40/40 (R-125-dominant), positioning it for commercial refrigeration. R-407A has higher R-125 content, making it better suited to lower-temperature evaporator operation.

›Why use R-407A instead of R-404A for commercial refrigeration?

GWP. R-407A (2,107) is meaningfully lower than R-404A (3,922) for the same application. The trade-off is somewhat lower capacity per unit displacement and the temperature glide that R-404A (near-azeotropic) doesn't have. For installations where R-404A is being retrofitted and oil/equipment changes are minor, R-407A is a meaningful GWP improvement; for new equipment the modern path is R-448A, R-449A, R-454C, or R-455A.

›What lubricant does R-407A use?

POE oil. Mineral oil and alkylbenzene are not miscible.

›What is the normal operating pressure of R-407A?

Operating pressure depends on evaporator load and ambient. The saturation pressures are in the PT table and the comparison table on this page.

›Does R-407A have temperature glide?

Yes — about 9-10°F at typical evaporator pressures. Smaller than R-407C's ~11°F glide but still meaningful. Use the dew curve for superheat math.

Download this dataset

Full PT chart for R-407A · CC BY 4.0 · attribute the source

CSV JSON

Sources & citations

  1. [1]
    2017 Guideline for Assignment of Refrigerant Container Colors (AHRI Guideline N-2017). AHRI. 2017. https://www.ahrinet.org/system/files/2023-06/AHRI_Guideline_N_2017.pdf (accessed October 2, 2026)
  2. [2]
    40 CFR 84.112 — Reclamation. eCFR (Office of the Federal Register). up to date as of 9/25/2026. https://www.ecfr.gov/current/title-40/chapter-I/subchapter-C/part-84/subpart-C/section-84.112 (accessed October 2, 2026). 89 FR 82859, Oct. 11, 2024
  3. [3]
    CoolProp 7.2.0. CoolProp (I. H. Bell, J. Wronski, S. Quoilin, V. Lemort). https://coolprop.org/ (accessed October 2, 2026). Bell, I. H.; Wronski, J.; Quoilin, S.; Lemort, V. Pure and Pseudo-pure Fluid Thermophysical Property Evaluation and the Open-Source Thermophysical Property Library CoolProp. Ind. Eng. Chem. Res. 53, 2498–2508 (2014). https://doi.org/10.1021/ie4033999

Data sources & provenance

PT chart
CoolProp 7.2.0 mixture model: R-32/R-125/R-134a, 20/40/40% by mass
Properties
CoolProp 7.2.0 + ASHRAE Standard 34-2022
GWP (100-yr)
US EPA value, 40 CFR 84.64(b) · IPCC AR4/AR5/AR6 on the GWP rankings
Table computed
October 2026

Reference material. Always verify pressure values against the equipment data plate and manufacturer service literature before charging or troubleshooting a specific system. Saturation pressure differs from operating pressure — see superheat & subcooling fundamentals. See how this PT table is calculated in our methodology.