HVAC PT Charts
RefrigerantASHRAE R-407F

R407F PT Chart

Updated October 12, 2026

R-407F

A1 Lower toxicity, no flame propagationHFC blend AIM Act HFC
R-407F 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: R407F, safety class A1, GWP 1,825. No red band: AHRI Guideline N-2017 reserves it for flammable refrigerants.R407FA1GWP 1,825
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-407F, safety class A1, GWP 1,825. No red band: AHRI Guideline N-2017 reserves it for flammable refrigerants[1], section 4.7.
R-32/R-125/R-134a (30/30/40)

Ternary HFC blend (30% R-32 / 30% R-125 / 40% R-134a). Branded as Honeywell Genetron Performax LT. ASHRAE A1, GWP 1,825. Designed as a lower-GWP, higher-capacity alternative to R-404A in commercial refrigeration.

R-407F saturation pressure splits across its glide: dew 73.4 PSIG at 40°F, bubble 249.3 PSIG at 100°F, and 133.5–156.4 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
156.4 / 133.5 PSIG
GWP (100-yr)
1,825 US EPA value, 40 CFR 84.64(b)
Temperature glide
10.0°F
Boiling point
bubble −50.9°F / dew −39.4°F
Sourced facts
Temperature glide
10.0°F at a 40°F dew point[3]
R-407F PT calculator Superheat

R-407F PT chart — printable saturation table

Looking for the R-407F 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-407F PT Chart — Pressure-Temperature Saturation Table

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

R-407F · 1° increments · °F / PSIG
Tinted rows: 32°F H₂O freeze
R-407F pressure-temperature saturation table in Fahrenheit and PSIG
Temp (°F)Bubble (PSIG)Dew (PSIG)
−40°F 4.90.5 in. Hg vac.
−39°F 5.40.2
−38°F 5.90.6
−37°F 6.41.0
−36°F 7.01.4
−35°F 7.51.9
−34°F 8.12.3
−33°F 8.62.8
−32°F 9.23.3
−31°F 9.83.7
−30°F 10.44.2
−29°F 11.04.7
−28°F 11.75.2
−27°F 12.35.8
−26°F 12.96.3
−25°F 13.66.8
−24°F 14.37.4
−23°F 15.07.9
−22°F 15.78.5
−21°F 16.49.1
−20°F 17.19.7
−19°F 17.810.3
−18°F 18.610.9
−17°F 19.311.6
−16°F 20.112.2
−15°F 20.912.9
−14°F 21.713.6
−13°F 22.514.2
−12°F 23.414.9
−11°F 24.215.7
−10°F 25.116.4
−9°F 25.917.1
−8°F 26.817.9
−7°F 27.718.6
−6°F 28.719.4
−5°F 29.620.2
−4°F 30.621.0
−3°F 31.521.8
−2°F 32.522.7
−1°F 33.523.5
0°F 34.524.4
1°F 35.525.3
2°F 36.626.2
3°F 37.727.1
4°F 38.728.0
5°F 39.828.9
6°F 40.929.9
7°F 42.130.9
8°F 43.231.9
9°F 44.432.9
10°F 45.633.9
11°F 46.834.9
12°F 48.036.0
13°F 49.237.1
14°F 50.538.2
15°F 51.839.3
16°F 53.140.4
17°F 54.441.5
18°F 55.742.7
19°F 57.143.9
20°F 58.545.1
21°F 59.946.3
22°F 61.347.6
23°F 62.748.8
24°F 64.250.1
25°F 65.651.4
26°F 67.152.7
27°F 68.654.0
28°F 70.255.4
29°F 71.756.8
30°F 73.358.2
31°F 74.959.6
32°F H₂O freeze76.561.0
33°F 78.262.5
34°F 79.964.0
35°F 81.565.5
36°F 83.367.0
37°F 85.068.6
38°F 86.870.1
39°F 88.571.7
40°F 90.373.4
41°F 92.275.0
42°F 94.076.7
43°F 95.978.3
44°F 97.880.1
45°F 99.781.8
46°F 101.783.5
47°F 103.785.3
48°F 105.787.1
49°F 107.789.0
50°F 109.790.8
51°F 111.892.7
52°F 113.994.6
53°F 116.096.5
54°F 118.298.5
55°F 120.4100.5
56°F 122.6102.5
57°F 124.8104.5
58°F 127.1106.6
59°F 129.4108.7
60°F 131.7110.8
61°F 134.0112.9
62°F 136.4115.1
63°F 138.8117.3
64°F 141.2119.5
65°F 143.7121.8
66°F 146.2124.1
67°F 148.7126.4
68°F 151.2128.7
69°F 153.8131.1
70°F 156.4133.5
71°F 159.0135.9
72°F 161.7138.4
73°F 164.4140.9
74°F 167.1143.4
75°F 169.9146.0
76°F 172.6148.5
77°F 175.5151.2
78°F 178.3153.8
79°F 181.2156.5
80°F 184.1159.2
81°F 187.0161.9
82°F 190.0164.7
83°F 193.0167.5
84°F 196.0170.4
85°F 199.1173.3
86°F 202.2176.2
87°F 205.3179.1
88°F 208.5182.1
89°F 211.7185.1
90°F 215.0188.1
91°F 218.2191.2
92°F 221.5194.4
93°F 224.9197.5
94°F 228.3200.7
95°F 231.7203.9
96°F 235.1207.2
97°F 238.6210.5
98°F 242.1213.8
99°F 245.7217.2
100°F 249.3220.6
101°F 252.9224.1
102°F 256.5227.6
103°F 260.2231.1
104°F 264.0234.7
105°F 267.8238.3
106°F 271.6241.9
107°F 275.4245.6
108°F 279.3249.3
109°F 283.2253.1
110°F 287.2256.9
111°F 291.2260.8
112°F 295.2264.7
113°F 299.3268.6
114°F 303.5272.6
115°F 307.6276.6
116°F 311.8280.7
117°F 316.1284.8
118°F 320.3288.9
119°F 324.7293.1
120°F 329.0297.4
121°F 333.4301.7
122°F 337.9306.0
123°F 342.4310.4
124°F 346.9314.8
125°F 351.5319.3
126°F 356.1323.8
127°F 360.8328.4
128°F 365.5333.0
129°F 370.2337.7
130°F 375.0342.4
131°F 379.9347.2
132°F 384.7352.0
133°F 389.7356.9
134°F 394.6361.8
135°F 399.7366.8
136°F 404.7371.8
137°F 409.8376.9
138°F 415.0382.0
139°F 420.2387.2
140°F 425.4392.4
141°F 430.7397.7
142°F 436.1403.1
143°F 441.5408.5
144°F 446.9413.9
145°F 452.4419.5
146°F 457.9425.1
147°F 463.5430.7
148°F 469.1436.4
149°F 474.8442.2
150°F 480.6448.0
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-407F 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: 156.4 PSIG (bubble)133.5 PSIG (dew)
Quick lookup — R-407F
156.4 / 133.5PSIG(1,078 / 920 kPa)
Bubble Dew· zeotropic blend
Range: −40 to 150°F Open full PT calculator →
Common service temperatures
32°F
77 / 61PSIG
Freezing
45°F
100 / 82PSIG
Heat-pump heat
70°F
156 / 133PSIG
Standard
75°F
170 / 146PSIG
Test ref
80°F
184 / 159PSIG
Warm
95°F
232 / 204PSIG
Summer peak

Saturation values from CoolProp 7.2.0 mixture model: R-32/R-125/R-134a, 30/30/40% 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 (30/30/40)
Ternary HFC blend

Lubricant compatibility

POEMO

POE required. Designed as a lower-GWP, higher-capacity alternative to R-404A in commercial refrigeration. Significant temperature glide.

Blend composition

  • R-32 30.0%
  • R-125 30.0%
  • R-134a 40.0%

Trade names

  • Genetron Performax LT — Honeywell

Common applications

  • Commercial refrigeration (medium and low temp)
  • Supermarket display cases
  • R-404A retrofit (lower GWP, similar capacity)

Properties

  • Boiling point (1 atm)
    bubble −50.9°F (−46.1°C), dew −39.4°F (−39.7°C)
  • Critical point
    No single point — blend critical locus
  • Molar mass
    82.06 g/mol
  • Temperature glide
    10.0°F
  • ODP
    0
  • GWP (100-yr)
    1,825 US EPA value, 40 CFR 84.64(b) IPCC: AR4 1,825 · AR5 1,674 · AR6 1,965
  • New-equipment status (US)
    Restricted in 45 new-equipment categories — US new-equipment rules (40 CFR 84.54).

What is R-407F?

R-407F is Honeywell's commercial refrigeration HFC blend with composition tuned for lower GWP than R-404A while maintaining or exceeding R-404A's capacity. The 30% R-32 content (higher than R-407C's 23% or R-407A's 20%) drives both the capacity and the pressure envelope toward R-404A's operating window.

R-407F sits between R-407A (GWP 2,107) and R-407C (GWP 1,774) in terms of GWP, while having the highest R-32 content of the R-407 family. The "Performax LT" branding emphasizes the low-temperature performance niche.

Where R-407F is used

  • Commercial refrigeration medium and low temperature
  • R-404A retrofit (lower GWP, similar capacity)
  • R-22 retrofit (commercial refrigeration applications)

Regulatory & phase-down status

R-407F's GWP of 1,825 is above the applicable 40 CFR 84.54 limit for new equipment — see the US new-equipment rules section on this page. For new commercial refrigeration installations the modern path is R-448A, R-449A, R-454C, R-455A, R-744, or R-290.

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-407F at 90 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-407F 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: 287 PSIG, 180°F Liquid: 287 PSIG, 100°F Evap inlet: 73 PSIG, 40°F (two-phase)Suction: 73 PSIG, 50°F Example cycle for R-407F (40°F evap, 110°F condenser, 10°F superheat, 10°F subcooling)

Phase-down timeline

R-407F contains HFC-32, HFC-125 and HFC-134a, regulated substances under the AIM Act. Its GWP under 40 CFR 84.64 is 1,825, at or above the limit in 45 of the categories 40 CFR 84.54 restricts (listed under “All 84.54 categories restricting R-407F”).

  • 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-407F →

US new-equipment rules (40 CFR 84.54)

R-407F contains HFC-32, HFC-125 and HFC-134a, regulated substances under the AIM Act. Under 40 CFR 84.64(b) its GWP is 1,825: 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-407F (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-407F 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-407F 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-407F'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-407F replaces

Replacements for R-407F

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

Saturation pressure (PSIG, gauge) for R-407F vs R-22, R-404A, R-449A, R-455A — zeotropic blends shown as dew / bubble. Each column shows the percent difference from R-407F. Source: CoolProp 7.2.0 dataset.
TempR-407FR-22R-404AR-449AR-455A
0°F24.4 / 34.524.0(−30%)33.7(−2%)24.2 / 33.4(−3%)22.3 / 44.1(+28%)
40°F73.4 / 90.368.6(−24%)86.9(−4%)71.6 / 87.4(−3%)66.9 / 103.3(+14%)
70°F133.5 / 156.4121.4(−22%)149.3(−5%)129.4 / 151.0(−3%)121.1 / 170.1(+9%)
100°F220.6 / 249.3195.9(−21%)236.8(−5%)212.7 / 240.0(−4%)199.6 / 260.7(+5%)

Frequently asked

›How does R-407F compare to R-407C?

Higher capacity, higher pressures, slightly higher GWP. R-407F is 30/30/40 (more R-32, more R-125, less R-134a) vs R-407C's 23/25/52. The higher R-32 content gives R-407F better volumetric capacity, making it more suitable for commercial refrigeration where R-407C falls short.

›Why use R-407F instead of R-404A?

Lower GWP (1,825 vs 3,922) with similar capacity match for low-temperature commercial refrigeration.

›What lubricant does R-407F use?

POE oil. Mineral oil and alkylbenzene are not miscible.

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

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

›Is R-407F still being sold?

Yes, by Honeywell, with continuing US distributor availability for the R-404A retrofit market. AIM Act phase-down constraints will reduce supply over time as virgin HFC production caps reduce overall HFC consumption.

Download this dataset

Full PT chart for R-407F · 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, 30/30/40% 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.