R-452A
Ternary HFC/HFO blend (11% R-32 / 59% R-125 / 30% R-1234yf). Branded as Chemours Opteon XP44. ASHRAE A1, GWP 2140 — engineered for transport refrigeration where R-404A's capacity and low-temperature performance are critical.
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
Saturation values from CoolProp 7.2.0 R452A.mix. Operating pressure on a running system differs — see the operating-pressure references for in-use values.
R-452A PT chart PDF — printable saturation table
Looking for the R-452A 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). Important service temperatures (normal boiling point, freezing point of water, residential AC evap and condenser targets) are tinted and tagged in the table for at-a-glance shop reference.
R-452A PT Chart — Pressure-Temperature Saturation Table
1° increments · Source: CoolProp 7.2.0 / manufacturer datasheet · hvacptcharts.com
| Temp (°F) | Bubble (PSIG) | Dew (PSIG) | Glide (PSI) |
|---|---|---|---|
| -40°F | 5.7 | 2.4 | 3.3 |
| -39°F | 6.2 | 2.8 | 3.4 |
| -38°F | 6.7 | 3.3 | 3.4 |
| -37°F | 7.3 | 3.8 | 3.5 |
| -36°F | 7.8 | 4.2 | 3.6 |
| -35°F | 8.4 | 4.7 | 3.7 |
| -34°F | 8.9 | 5.2 | 3.7 |
| -33°F | 9.5 | 5.7 | 3.8 |
| -32°F | 10.1 | 6.2 | 3.9 |
| -31°F | 10.7 | 6.8 | 4.0 |
| -30°F | 11.3 | 7.3 | 4.0 |
| -29°F | 12.0 | 7.8 | 4.1 |
| -28°F | 12.6 | 8.4 | 4.2 |
| -27°F | 13.3 | 9.0 | 4.3 |
| -26°F | 13.9 | 9.6 | 4.4 |
| -25°F | 14.6 | 10.1 | 4.4 |
| -24°F | 15.3 | 10.7 | 4.5 |
| -23°F | 16.0 | 11.3 | 4.6 |
| -22°F | 16.7 | 12.0 | 4.7 |
| -21°F | 17.4 | 12.6 | 4.8 |
| -20°F | 18.1 | 13.3 | 4.9 |
| -19°F | 18.9 | 13.9 | 5.0 |
| -18°F | 19.7 | 14.6 | 5.1 |
| -17°F | 20.4 | 15.3 | 5.2 |
| -16°F | 21.2 | 16.0 | 5.3 |
| -15°F | 22.0 | 16.7 | 5.4 |
| -14°F | 22.9 | 17.4 | 5.5 |
| -13°F | 23.7 | 18.1 | 5.6 |
| -12°F | 24.5 | 18.9 | 5.6 |
| -11°F | 25.4 | 19.6 | 5.7 |
| -10°F | 26.3 | 20.4 | 5.8 |
| -9°F | 27.1 | 21.2 | 5.9 |
| -8°F | 28.0 | 22.0 | 6.0 |
| -7°F | 29.0 | 22.8 | 6.2 |
| -6°F | 29.9 | 23.6 | 6.3 |
| -5°F | 30.8 | 24.5 | 6.4 |
| -4°F | 31.8 | 25.3 | 6.5 |
| -3°F | 32.8 | 26.2 | 6.6 |
| -2°F | 33.8 | 27.1 | 6.7 |
| -1°F | 34.8 | 28.0 | 6.8 |
| 0°F | 35.8 | 28.9 | 6.9 |
| 1°F | 36.8 | 29.8 | 7.0 |
| 2°F | 37.9 | 30.8 | 7.1 |
| 3°F | 39.0 | 31.7 | 7.2 |
| 4°F | 40.1 | 32.7 | 7.4 |
| 5°F | 41.2 | 33.7 | 7.5 |
| 6°F | 42.3 | 34.7 | 7.6 |
| 7°F | 43.4 | 35.7 | 7.7 |
| 8°F | 44.6 | 36.8 | 7.8 |
| 9°F | 45.8 | 37.8 | 7.9 |
| 10°F | 47.0 | 38.9 | 8.1 |
| 11°F | 48.2 | 40.0 | 8.2 |
| 12°F | 49.4 | 41.1 | 8.3 |
| 13°F | 50.6 | 42.2 | 8.4 |
| 14°F | 51.9 | 43.3 | 8.6 |
| 15°F | 53.2 | 44.5 | 8.7 |
| 16°F | 54.5 | 45.7 | 8.8 |
| 17°F | 55.8 | 46.9 | 8.9 |
| 18°F | 57.1 | 48.1 | 9.1 |
| 19°F | 58.5 | 49.3 | 9.2 |
| 20°FMT evap target | 59.9 | 50.5 | 9.3 |
| 21°F | 61.3 | 51.8 | 9.5 |
| 22°F | 62.7 | 53.1 | 9.6 |
| 23°F | 64.1 | 54.4 | 9.7 |
| 24°F | 65.6 | 55.7 | 9.9 |
| 25°F | 67.0 | 57.0 | 10.0 |
| 26°F | 68.5 | 58.4 | 10.1 |
| 27°F | 70.0 | 59.8 | 10.3 |
| 28°F | 71.6 | 61.2 | 10.4 |
| 29°F | 73.1 | 62.6 | 10.5 |
| 30°F | 74.7 | 64.0 | 10.7 |
| 31°F | 76.3 | 65.5 | 10.8 |
| 32°FH₂O freeze | 77.9 | 67.0 | 11.0 |
| 33°F | 79.6 | 68.5 | 11.1 |
| 34°F | 81.2 | 70.0 | 11.3 |
| 35°FMT box temp | 82.9 | 71.5 | 11.4 |
| 36°F | 84.6 | 73.1 | 11.5 |
| 37°F | 86.3 | 74.6 | 11.7 |
| 38°F | 88.1 | 76.3 | 11.8 |
| 39°F | 89.9 | 77.9 | 12.0 |
| 40°F | 91.7 | 79.5 | 12.1 |
| 41°F | 93.5 | 81.2 | 12.3 |
| 42°F | 95.3 | 82.9 | 12.4 |
| 43°F | 97.2 | 84.6 | 12.6 |
| 44°F | 99.1 | 86.3 | 12.7 |
| 45°F | 101.0 | 88.1 | 12.9 |
| 46°F | 102.9 | 89.9 | 13.0 |
| 47°F | 104.9 | 91.7 | 13.2 |
| 48°F | 106.8 | 93.5 | 13.3 |
| 49°F | 108.9 | 95.4 | 13.5 |
| 50°F | 110.9 | 97.2 | 13.7 |
| 51°F | 112.9 | 99.1 | 13.8 |
| 52°F | 115.0 | 101.1 | 14.0 |
| 53°F | 117.1 | 103.0 | 14.1 |
| 54°F | 119.3 | 105.0 | 14.3 |
| 55°F | 121.4 | 107.0 | 14.4 |
| 56°F | 123.6 | 109.0 | 14.6 |
| 57°F | 125.8 | 111.1 | 14.7 |
| 58°F | 128.0 | 113.1 | 14.9 |
| 59°F | 130.3 | 115.2 | 15.0 |
| 60°F | 132.6 | 117.4 | 15.2 |
| 61°F | 134.9 | 119.5 | 15.4 |
| 62°F | 137.2 | 121.7 | 15.5 |
| 63°F | 139.6 | 123.9 | 15.7 |
| 64°F | 142.0 | 126.1 | 15.9 |
| 65°F | 144.4 | 128.4 | 16.0 |
| 66°F | 146.9 | 130.7 | 16.2 |
| 67°F | 149.3 | 133.0 | 16.3 |
| 68°F | 151.8 | 135.3 | 16.5 |
| 69°F | 154.4 | 137.7 | 16.6 |
| 70°F | 156.9 | 140.1 | 16.8 |
| 71°F | 159.5 | 142.6 | 17.0 |
| 72°F | 162.1 | 145.0 | 17.1 |
| 73°F | 164.8 | 147.5 | 17.3 |
| 74°F | 167.4 | 150.0 | 17.4 |
| 75°F | 170.2 | 152.6 | 17.6 |
| 76°F | 172.9 | 155.1 | 17.7 |
| 77°F | 175.6 | 157.7 | 17.9 |
| 78°F | 178.4 | 160.4 | 18.1 |
| 79°F | 181.3 | 163.0 | 18.2 |
| 80°F | 184.1 | 165.7 | 18.4 |
| 81°F | 187.0 | 168.5 | 18.5 |
| 82°F | 189.9 | 171.2 | 18.7 |
| 83°F | 192.8 | 174.0 | 18.8 |
| 84°F | 195.8 | 176.8 | 19.0 |
| 85°F | 198.8 | 179.7 | 19.1 |
| 86°F | 201.9 | 182.6 | 19.3 |
| 87°F | 204.9 | 185.5 | 19.4 |
| 88°F | 208.0 | 188.5 | 19.6 |
| 89°F | 211.2 | 191.4 | 19.7 |
| 90°F | 214.3 | 194.5 | 19.9 |
| 91°F | 217.5 | 197.5 | 20.0 |
| 92°F | 220.8 | 200.6 | 20.2 |
| 93°F | 224.0 | 203.7 | 20.3 |
| 94°F | 227.3 | 206.9 | 20.4 |
| 95°FAHRI design ambient | 230.7 | 210.1 | 20.6 |
| 96°F | 234.0 | 213.3 | 20.7 |
| 97°F | 237.4 | 216.6 | 20.9 |
| 98°F | 240.8 | 219.8 | 21.0 |
| 99°F | 244.3 | 223.2 | 21.1 |
| 100°F | 247.8 | 226.6 | 21.3 |
| 101°F | 251.3 | 229.9 | 21.4 |
| 102°F | 254.9 | 233.4 | 21.5 |
| 103°F | 258.5 | 236.9 | 21.6 |
| 104°F | 262.2 | 240.4 | 21.8 |
| 105°F | 265.8 | 243.9 | 21.9 |
| 106°F | 269.5 | 247.5 | 22.0 |
| 107°F | 273.3 | 251.2 | 22.1 |
| 108°F | 277.1 | 254.8 | 22.2 |
| 109°F | 280.9 | 258.6 | 22.3 |
| 110°FCond saturation | 284.7 | 262.3 | 22.4 |
| 111°F | 288.6 | 266.1 | 22.6 |
| 112°F | 292.6 | 269.9 | 22.6 |
| 113°F | 296.5 | 273.8 | 22.7 |
| 114°F | 300.5 | 277.7 | 22.8 |
| 115°F | 304.6 | 281.6 | 22.9 |
| 116°F | 308.7 | 285.6 | 23.0 |
| 117°F | 312.8 | 289.7 | 23.1 |
| 118°F | 316.9 | 293.8 | 23.2 |
| 119°F | 321.1 | 297.9 | 23.2 |
| 120°F | 325.4 | 302.1 | 23.3 |
| 121°F | 329.6 | 306.3 | 23.4 |
| 122°F | 333.9 | 310.5 | 23.4 |
| 123°F | 338.3 | 314.8 | 23.5 |
| 124°F | 342.7 | 319.2 | 23.5 |
| 125°F | 347.1 | 323.6 | 23.6 |
| 126°F | 351.6 | 328.0 | 23.6 |
| 127°F | 356.1 | 332.5 | 23.6 |
| 128°F | 360.7 | 337.0 | 23.7 |
| 129°F | 365.3 | 341.6 | 23.7 |
| 130°F | 369.9 | 346.2 | 23.7 |
| 131°F | 374.6 | 350.9 | 23.7 |
| 132°F | 379.3 | 355.6 | 23.7 |
| 133°F | 384.1 | 360.4 | 23.7 |
| 134°F | 388.9 | 365.2 | 23.6 |
| 135°F | 393.7 | 370.1 | 23.6 |
| 136°F | 398.6 | 375.1 | 23.6 |
| 137°F | 403.6 | 380.1 | 23.5 |
| 138°F | 408.5 | 385.1 | 23.4 |
| 139°F | 413.6 | 390.2 | 23.4 |
| 140°F | 418.6 | 395.3 | 23.3 |
| 141°F | 423.7 | 400.6 | 23.2 |
| 142°F | 428.9 | 405.8 | 23.1 |
| 143°F | 434.1 | 411.1 | 22.9 |
| 144°F | 439.3 | 416.5 | 22.8 |
| 145°F | 444.6 | 422.0 | 22.6 |
| 146°F | 449.9 | 427.5 | 22.5 |
| 147°F | 455.3 | 433.1 | 22.3 |
| 148°F | 460.8 | 438.7 | 22.1 |
| 149°F | 466.2 | 444.4 | 21.8 |
| 150°F | 471.7 | 450.2 | 21.6 |
| Temp (°C) | Bubble (kPa) | Dew (kPa) | Glide (kPa) |
|---|---|---|---|
| -40°C | 39 | 16 | 23 |
| -39°C | 46 | 22 | 24 |
| -38°C | 52 | 28 | 25 |
| -37°C | 59 | 34 | 26 |
| -36°C | 67 | 40 | 26 |
| -35°C | 74 | 47 | 27 |
| -34°C | 82 | 53 | 28 |
| -33°C | 90 | 60 | 29 |
| -32°C | 98 | 67 | 30 |
| -31°C | 106 | 75 | 31 |
| -30°C | 115 | 83 | 33 |
| -29°C | 124 | 91 | 34 |
| -28°C | 133 | 99 | 35 |
| -27°C | 143 | 107 | 36 |
| -26°C | 153 | 116 | 37 |
| -25°C | 163 | 125 | 38 |
| -24°C | 174 | 134 | 39 |
| -23°C | 185 | 144 | 41 |
| -22°C | 196 | 154 | 42 |
| -21°C | 207 | 164 | 43 |
| -20°C | 219 | 175 | 45 |
| -19°C | 231 | 186 | 46 |
| -18°C | 244 | 197 | 47 |
| -17°C | 257 | 208 | 49 |
| -16°C | 270 | 220 | 50 |
| -15°C | 284 | 232 | 52 |
| -14°C | 298 | 245 | 53 |
| -13°C | 312 | 258 | 54 |
| -12°C | 327 | 271 | 56 |
| -11°C | 342 | 285 | 57 |
| -10°C | 358 | 299 | 59 |
| -9°C | 374 | 313 | 61 |
| -8°C | 390 | 328 | 62 |
| -7°CMT evap target | 407 | 343 | 64 |
| -6°C | 424 | 359 | 65 |
| -5°C | 442 | 375 | 67 |
| -4°C | 460 | 391 | 69 |
| -3°C | 479 | 408 | 70 |
| -2°C | 498 | 426 | 72 |
| -1°C | 517 | 443 | 74 |
| 0°CH₂O freeze | 537 | 462 | 76 |
| 1°C | 558 | 480 | 77 |
| 2°CMT box temp | 579 | 499 | 79 |
| 3°C | 600 | 519 | 81 |
| 4°C | 622 | 539 | 83 |
| 5°C | 645 | 560 | 85 |
| 6°C | 667 | 581 | 87 |
| 7°C | 691 | 602 | 88 |
| 8°C | 715 | 625 | 90 |
| 9°C | 739 | 647 | 92 |
| 10°C | 765 | 670 | 94 |
| 11°C | 790 | 694 | 96 |
| 12°C | 816 | 718 | 98 |
| 13°C | 843 | 743 | 100 |
| 14°C | 870 | 769 | 102 |
| 15°C | 898 | 795 | 104 |
| 16°C | 927 | 821 | 106 |
| 17°C | 956 | 848 | 108 |
| 18°C | 986 | 876 | 110 |
| 19°C | 1,016 | 904 | 112 |
| 20°C | 1,047 | 933 | 114 |
| 21°C | 1,078 | 963 | 116 |
| 22°C | 1,111 | 993 | 118 |
| 23°C | 1,143 | 1,024 | 120 |
| 24°C | 1,177 | 1,055 | 121 |
| 25°C | 1,211 | 1,088 | 123 |
| 26°C | 1,246 | 1,120 | 125 |
| 27°C | 1,281 | 1,154 | 127 |
| 28°C | 1,317 | 1,188 | 129 |
| 29°C | 1,354 | 1,223 | 131 |
| 30°C | 1,392 | 1,259 | 133 |
| 31°C | 1,430 | 1,295 | 135 |
| 32°C | 1,469 | 1,332 | 137 |
| 33°C | 1,509 | 1,370 | 138 |
| 34°C | 1,549 | 1,409 | 140 |
| 35°CAHRI design ambient | 1,590 | 1,448 | 142 |
| 36°C | 1,632 | 1,489 | 144 |
| 37°C | 1,675 | 1,530 | 145 |
| 38°C | 1,718 | 1,571 | 147 |
| 39°C | 1,763 | 1,614 | 149 |
| 40°C | 1,808 | 1,657 | 150 |
| 41°C | 1,853 | 1,702 | 152 |
| 42°C | 1,900 | 1,747 | 153 |
| 43°CCond saturation | 1,947 | 1,793 | 154 |
| 44°C | 1,996 | 1,840 | 156 |
| 45°C | 2,045 | 1,888 | 157 |
| 46°C | 2,094 | 1,936 | 158 |
| 47°C | 2,145 | 1,986 | 159 |
| 48°C | 2,197 | 2,037 | 160 |
| 49°C | 2,249 | 2,088 | 161 |
| 50°C | 2,303 | 2,141 | 162 |
| 51°C | 2,357 | 2,195 | 162 |
| 52°C | 2,412 | 2,249 | 163 |
| 53°C | 2,468 | 2,305 | 163 |
| 54°C | 2,525 | 2,362 | 163 |
| 55°C | 2,583 | 2,419 | 163 |
| 56°C | 2,642 | 2,478 | 163 |
| 57°C | 2,701 | 2,538 | 163 |
| 58°C | 2,762 | 2,600 | 162 |
| 59°C | 2,824 | 2,662 | 162 |
| 60°C | 2,886 | 2,726 | 161 |
| 61°C | 2,950 | 2,791 | 159 |
| 62°C | 3,015 | 2,857 | 158 |
| 63°C | 3,080 | 2,925 | 156 |
| 64°C | 3,147 | 2,994 | 153 |
| 65°C | 3,215 | 3,064 | 150 |
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-452A PT chart data: CoolProp 7.2.0 (REFPROP-compatible Helmholtz EOS) or manufacturer datasheet, validated against AHRI Standard 700-2019.
At a glance
Chemistry
Lubricant compatibility
POE required. Targeted at transport refrigeration where R-404A pressure/capacity match matters. Lower GWP than R-404A but still significant.
Blend composition
- R-3211.0%
- R-12559.0%
- R-1234yf30.0%
Trade names
- Opteon XP44Chemours
Common applications
- Transport refrigeration (truck, trailer, marine)
- Commercial refrigeration
- R-404A retrofit
Properties
- Boiling point (1 atm)-47.0°C / -52.5°F
- Critical pointNo single point — blend critical locus
- Molar mass103.51 g/mol
- Temperature glide7.0°F
- ODP0
- GWP (AR5, 100-yr)2140
- GWP (AR6, 100-yr)2293
What is R-452A?
R-452A is a ternary zeotropic blend developed by Chemours specifically for transport refrigeration applications — truck, trailer, intermodal container, and marine refrigeration where the demanding duty cycle (high ambient, road vibration, frequent door openings, low-temperature setpoints) makes R-404A's capacity and pressure characteristics hard to replace without performance penalty.
The composition combines R-32 (capacity), R-125 (non-flammability and pressure rating), and R-1234yf (lower GWP). The blend is non-flammable A1, which simplifies vehicle and trailer system design where the A2L safety class would add cost and complexity to the closed transport environment.
Where R-452A is used
- Refrigerated transport — truck and trailer reefer units
- Marine refrigeration (intermodal containers, fishing fleet)
- Self-contained commercial refrigeration where R-404A capacity match is needed
- R-404A retrofit (specifically in transport applications)
Regulatory & phase-down status
R-452A's GWP of 2140 is meaningfully lower than R-404A (3922) but still above the EU F-Gas 150 threshold and the AIM Act 700 new-equipment threshold for most stationary applications. Its position in the lineup is application-specific: where the duty cycle and equipment design favor an A1 non-flammable refrigerant and the lower-GWP alternatives (R-454C, R-455A at GWP 148) introduce A2L safety complications, R-452A is the medium-term compromise.
Long-term, transport refrigeration is transitioning toward R-454C, R-455A, R-744 (CO₂ transcritical), and R-290 (hydrocarbon, charge-limited self-contained units) depending on the specific application and regulatory regime.
Service notes
Polyolester (POE) oil is required. Significant temperature glide (~5°F at typical evaporator conditions); EXV is preferred for new equipment, and TXV systems require retuning per the equipment OEM guidance.
Transport refrigeration service has additional considerations beyond stationary refrigeration: vibration-rated service equipment, EPA Section 608 plus DOT compliance for transport refrigerant cylinders, and equipment-OEM-specific charging procedures (Carrier Transicold, Thermo King, etc. each have their own R-452A guidance).
Temperature glide
R-452A is a zeotropic blend: at constant pressure it boils across a temperature range rather than at a single point. This affects EXV sizing, charge measurement, and superheat measurement. Use the dew curve for superheat, bubble curve for subcooling.
Operating cycle
Phase-down timeline
No phase-down milestones documented for R-452A in this build. This may mean: (a) no regulatory phase-down currently published; (b) the refrigerant has local regulatory schedules not yet transcribed into the site dataset; or (c) it is a specialty refrigerant outside the main regulatory frameworks. For authoritative current status, consult the EPA AIM Act allocations (40 CFR Part 84), EU F-Gas Regulation 517/2014 + 2024/573, and the relevant national implementations of the Kigali Amendment.
Global warming potential, in context
Commercial refrigeration — medium temperature
Retrofit and replacement paths
R-452A replaces
Replacements for R-452A
Frequently asked
›Why R-452A in transport refrigeration instead of R-448A or R-449A?
Capacity and pressure match to R-404A. Transport refrigeration equipment is designed around R-404A's pressure envelope and capacity per unit displacement. R-448A (Solstice N40) and R-449A (Opteon XP40) work as transport retrofits but typically at slightly lower capacity. R-452A's composition was specifically tuned to match R-404A capacity for transport's demanding duty cycle; the tradeoff is higher GWP (2140 vs ~1390 for R-448A/R-449A).
›What is the normal operating pressure of R-452A?
Comparable to R-404A in transport refrigeration applications. At a 0°F evaporator setpoint with 95°F ambient, expect roughly 15-22 PSIG suction and 250-300 PSIG discharge. Saturation at 0°F is ~15 PSIG; at 95°F it's ~233 PSIG. Operating pressures fall on either side as evaporator load and condenser airflow drive the operating point.
›What lubricant does R-452A use?
Polyolester (POE) oil. Mineral oil and alkylbenzene are not miscible. POE is hygroscopic; deep vacuum and verified hold before charging are required.
›Does R-452A have temperature glide?
Yes — about 5°F at typical evaporator conditions. Use the dew curve for superheat measurement, bubble for subcooling. Charge by weight per the equipment manufacturer's specification, not by gauge.
›Can I retrofit an R-404A transport unit to R-452A?
Yes, with the standard retrofit procedure: recover R-404A, verify POE oil in the system, replace filter-drier with POE-compatible model, pull vacuum, charge R-452A by weight per the equipment OEM's specification. Carrier Transicold and Thermo King both publish R-452A retrofit guidance for their reefer product lines.
›What's the long-term replacement for R-452A in transport?
For transport refrigeration the longer-term path varies by application. Truck and trailer reefer units are transitioning toward R-454C (A2L, GWP 148) and R-455A (A2L, GWP 148) where the safety class change is acceptable. Marine container refrigeration is moving toward R-744 (CO₂ transcritical) and R-454C. R-452A is the medium-term option where the A1 safety class outweighs the GWP premium.
›Is R-452A AIM Act compliant?
For transport refrigeration the AIM Act technology transition rules have different effective dates and GWP thresholds than for stationary AC. R-452A's GWP of 2140 falls above the most restrictive 2025 thresholds for some equipment categories but remains permissible for transport-specific applications under the current rules. Verify the specific equipment category and effective date in the latest EPA AIM Act SNAP rule.