422b vs 407c. What is a good retrofit for R-22 refrigerant? NU-22B (R-422B), and MO99 (R-438A) are the best and If an oil change is difficult or not possible, then HFC/hydrocarbon blended refrigerants, such as R-422B, are available for use in air conditioning applications, which will allow the continued used of mineral or alykylbenzene oil. We paid $150/pound for R22, but the tech used 407c. R-407C) – do not contain chlorine, but have high GWPs given their fluorine content, and are now being phased down globally under the Kigali Amendment to the Montreal Protocol. Nov 30, 2004 · I have only used 407c. R-407C is Trane-approved in limited commercial applications, but requires a change to POE oil. Factory sealed, drop-in ready, and perfect for HVAC systems. 1. Learn how the HFC refrigerant Freon™ 407C (R-407C) can be used to replace R-22 in commercial and residential air conditioning systems. R407C: As a zeotropic mixture, exhibits 5. HVAC Shop Talk podcast represents the blue collar boys and girls in the skilled trades, especially HVAC. Here we will discuss the R422B Refrigerant Chart. May 8, 2025 · What is the retrofit refrigerant for R-22? Author: Dr. Feb 16, 2017 · The best replacement for R-22 Freon is usually R-407c. I have used it once to retrofit R22 on an 06E and used almost exact nameplate charge to have proper subcool and superheat. Management decided they don't like R407c and wants to run the 422b for lower head pressure with our ambient temp hitting over 105 consistently. R422b is hydrofluorocarbon refrigerant that comes with 3 components They have two hydrofluorocarbons, R-125, R-134A, and one hydrocarbon, R600A. Mar 10, 2025 · California bans virgin HFCs with high GWP under SB1206: effective 2025 (≥ 2,200), future limits in 2030 & 2033. 15MPa) is lower than R407C (~2. Leaks do not occur in every system retrofitted, and, in practice, it is diffi May 19, 2025 · Discover why R-422B 25 lb (NU22) Refrigerant is the top R-22 replacement. This may require adjusting the high pressure safety controls to operate as intended. We had some work done on our HVAC system. It has a very low loss in capacity (0 – 5%) relative to R-22 and is less expensive than many other R-22 replacement refrigerants. It's a 3. Our company just started trying to use R422b. Save money and help the environment by upgrading your refrigerant from the outdated, ozone depleting R-22 to the EPA-approved R-407C alternative. Freon MO99 is the gold standard for R-22 alternatives and was developed by the same scientists who engineered Freon R-22. Many R-22 retrofits No “drop-ins” / No “1 answer” Understanding basic HFC components key to differentiating products / advertising claims HCs help with oil – immiscibility issues remain R-407C, R-407A, & R-427A are good options Dec 5, 2022 · 422B Refrigerant may be relatively new, but it has already made a name for itself in the industry. R-407C was specifically designed with increased capacity to ofset the impacts of temperature glide. Components commonly affected are Schrader core seals, liquid level receiver gaskets, solenoid valves, ball valves, flange seals, a d some shaft seals on open drive compressors. But is 407c a drop-in replacement for R22? In this article, we will explore the characteristics of 407c refrigerant and its compatibility with R22 systems. 410, 404, 134, 407a, 407c, r22 is what I currently got in my van. Listen to HVAC Shop Talk Streaming radio - https://s *Look up model numbers in the app for unit specific protocols. 90% of the commercial shit I installed was Lennox RTU with micro channel single stage in which came with nothing but problems or old ass R22 units leaking that retrofitted to 407. 32MPa), ensuring more stable system response. He wrote the new coolant on the unit, and they have confirmed the mistake on their end. Good day all, what is everyone's opinion on using 407C vs 422B. 5 ton unit that took 9 pounds of coolant. *R-421A (Choice R-421A); *R-422B (ICOR XAC1); *R-422D (ISCEON MO29); *R-422E (R-422E); *R-424A (RS-44) Jul 16, 2025 · Learn whether you can mix R22 with R407C or R134a. They told us the price to put in 407c was $100/pound (MATERIAL ONLY) which seems super high from the research I've done online, and only offered a $450 refund Using these retrofit guidelines, many R-22 systems can be retrofitted for use with FreonTM 407C in air conditioning, heat pump applications, and refrigeration applications to allow existing equipment to continue to operate safely and efficiently, even after R-22 is no longer available. Arkema recommends Forane® 407C, 407A and 427A retrofits. 2°C temperature glide, reducing Apr 2, 2024 · How many homeowners are familiar with 407c, 422b, 454, subcool/superheat, mineral vs Poe etc, ehh not many. g. com HFCs – hydrofluorocarbons (e. Apr 11, 2024 · Hello guys welcome to the new post. Aug 28, 2024 · The phase-out of certain types of refrigerants, such as R22, has led to the emergence of alternative options, including 407c refrigerant. At 7°C evaporation temperature, R22’s discharge pressure (~2. . Other techs combined have done 3 retrofits and all seem to be going way over Aug 22, 2022 · Refrigerant Properties and Charging | R410a, R407c, 422b, 438a (MO99) By Martin King Posted August 22, 2022 Mar 30, 2023 · Looking to compare 407C Pressures vs R22? Check out the differences in this article. I know there are lots of problems with MO99 wiping out compressors when the mineral oil is left intact. Jessika Gaylord | Last update: Thursday, May 8, 2025 Freon MO99 (R-438A) is the Preferred Alternative for Retrofitting. 5°C~7. What HVAC techs & wholesalers must know. Discover risks, technical challenges, and safer alternatives for your HVAC system. However, there will be a loss in capacity and efficiency when compared to R-407C or R-407A. Thermodynamic Performance & Operational Characteristics Cooling Efficiency & Temperature Glide R22: 5% higher volumetric cooling capacity than R407C with superior COP. Depends on customer base and application, I work on mostly commercial refrigeration so swapping refrigerants is common but we don't use "drop ins" and try to stick to the common blends. As a result, NONE of the replacement refrigerants should be used to “top-of” systems still running with R-22 and they should NOT be used interchangeably. FreonTM 407C exhibits performance characteristics similar to R-22. 422B is often used to replace the more well-known refrigerants like R22 because of its improved efficiency and environmental friendliness. FreonTM 407C and FreonTM 407A Refrigerant Descriptions FreonTM 407C and FreonTM 407A are non-ozone depleting blends of three hydrofluorocarbon (HFC) refrigerants. The table shows the capacity is comparable to R-22. Unlike R-22, which is a single refrigerant, all of the replacements are blends of two or more refrigerants. Buy online now! See Arkema’s retrofit solutions for the R-22 HCFC phase out mandated by the EPA. Anyone have experience with dropping these into Trane Scroll Compressors? Gone are the days of $100 tanks of R22 lol Many R-22 retrofits No “drop-ins” / No “1 answer” Understanding basic HFC components key to differentiating products / advertising claims HCs help with oil – immiscibility issues remain R-407C, R-407A, & R-427A are good options See full list on refrigeranthq. The 422b was used as a replacement for R22. Refrigerant Properties and Charging | R410a, R407c, 422b, 438a (MO99) Posted August 22, 2022 The key thing to remember is there is NO such thing as a “drop in” replacement. Instead, manufacturers instructions should be Tag: r422b vs r422d Refrigerant Properties and Charging | R410a, R407c, 422b, 438a (MO99) Posted August 22, 2022 R-407C exhibits higher pressures than R-22 at normal condensing temperatures. The refrigerant has many features. NU22 has 4% butane and its more expensive than MO99 that also contains methyl-butane and butane, 427a is so far the cheapest one and has no flammables in it. That makes it best for many drop-in replacements in the market and supports the r HFC refrigerants, such as R-407C or R-404A. cga jud nv u5eny3flbq w2j3z ms2l cj98f tuhb eqmxydt 13