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    An AI Overview is not available for this searchCan't generate an AI overview right now. Try again later.
    AI Overview
    R421A is a hydrofluorocarbon (HFC) refrigerant blend (R-125/R-134a) used as an eco-friendly, non-ozone depleting "drop-in" replacement for R22 in HVAC and refrigeration. It offers lower Global Warming Potential (GWP) than R22, requires no oil change (compatible with mineral/POE oils), and allows for lower discharge temperatures, improving system efficiency. 
    Key Eco-Friendly & Performance Features: 
    • Zero ODP: R421A has zero Ozone Depletion Potential, making it safer for the environment than R22.
    • Lower GWP: It offers a reduced Global Warming Potential compared to R22, contributing to a lower carbon footprint.
    • No Oil Changes Needed: It works with existing mineral oil, though it is compatible with POE oil, making retrofitting simpler.
    • High Compatibility: It is suitable for various applications, including residential AC, commercial refrigeration, and, according to, and is non-flammable (ASHRAE A1 rating).
    • Efficiency: It provides similar or better performance compared to R22 with lower compressor discharge temperatures. 
    Usage and Handling: 
    • Drop-in Replacement: R421A is designed to replace R22 with minimal system modifications.
    • Charging: It should be charged as a liquid, but top-offs can be done via the vapor side.
    • Versatility: Compatible with compressors designed for R22. 
    R421A is a practical, sustainable choice to extend the life of older R22 systems while reducing environmental impact. 
    • R-421A Refrigerant 25 LB - CoolmateGas
      If you don't have license, you may simply fill out the disclaimer(the form link be attached at the confirmation email) R421A is a ...
      CoolmateGas
    • Choice™ R421A Refrigerant - A-Gas
      Choice™ R421A refrigerant is a unique non-ozone depleting replacement for R22. Its performance temperature ranges are also compara...
      A-Gas
    • Refrigerant 421A Specialty Gas size 30 lb Disposable - Arc3 Gases
      Description. Refrigerant 421A (R-421A) is a non-ozone depleting, HFC-based blend designed as a direct, eco-friendly, "drop-in" rep...
      Arc3 Gases
    • Shearer Stock - Refrigerant, R421A, 25 lbs
      Features * Unique non-ozone depleting, long-term replacement for R22 refrigerant. * Environmentally GREEN refrigerant. * Replace R...
      Shearer Supply
    • Theoretical thermodynamic performance assessment of various ...
      Nov 4, 2019 — Compressor discharge temperature of RM40 was 13.36 ℃ lower when compared with R22. Volumetric refrigeration capacity of RM40 (3335...
      Sage Journals
    • Part 7, Pros and Cons of R-421A & Conclusion
      Sep 28, 2017 — one of the one we're going to talk about today is 421A 421a i really out of all of them and and depending on my situation. I would...
      5m
      YouTube·Chadwell Supply
    • R421A 25 lbs cylinders | JJ AC SUPPLY
      Refrigerant R421A is a unique non-ozone depleting replacement for R22. Usable with Mineral, AB, or POE oils, this refrigerant can ...
      jj ac supply
    • The Ultimate Guide to R-421A Refrigerant - eRefrigerants.com
      One of the main benefits of R-421A refrigerant is its environmental friendliness. It has a low global warming potential (GWP) and ...
      eRefrigerants.com
    • R-421A Refrigerant 25 LB - CoolmateGas
      If you don't have license, you may simply fill out the disclaimer(the form link be attached at the confirmation email) R421A is a ...
      CoolmateGas
    • Choice™ R421A Refrigerant - A-Gas
      Choice™ R421A refrigerant is a unique non-ozone depleting replacement for R22. Its performance temperature ranges are also compara...
      A-Gas
    • Refrigerant 421A Specialty Gas size 30 lb Disposable - Arc3 Gases
      Description. Refrigerant 421A (R-421A) is a non-ozone depleting, HFC-based blend designed as a direct, eco-friendly, "drop-in" rep...
      Arc3 Gases
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    Web results

    R-421A Refrigerant 25 LB


    CoolmateGas
    https://coolmategas.com › products › r-421a-refrigerant...
    CoolmateGas
    https://coolmategas.com › products › r-421a-refrigerant...
    R421A is often used as a retrofit refrigerant for existing R22 systems, providing a more environmentally friendly alternative while maintaining good performance ...Read more
    $426.95 to $7,280.00 · In stock · 5.0(528) · Free delivery · 30-day returns
    Missing: Eco- ‎| Show results with: Eco-
    People also ask
    Which refrigerant gas is environmentally friendly?
    R-600A (Isobutane): R-600A is a natural refrigerant known for its low global warming potential (GWP) and zero ozone depletion potential (ODP). It is highly energy-efficient and commonly used such as LG refrigerators, making the best cooling appliances.Jan 14, 2025

    What are Eco-Friendly Refrigerants | Bajaj Finserv


    Bajaj Finserv
    https://www.bajajfinserv.in › eco-friendly-refrigerants
    Bajaj Finserv
    https://www.bajajfinserv.in › eco-friendly-refrigerants
    Is R421A the same as R-22?
    An error has occurred. Please try again later.
    Is 134a more environmentally friendly than 1234yf?
    Environmental Impact: R-1234yf has a significantly lower GWP than R-134a, making it a more sustainable option. Efficiency: While both refrigerants offer efficient cooling, some studies suggest R-134a might have a slight edge in cooling performance.Dec 17, 2024

    What Is the Difference Between R-1234YF and R-134A


    Oceanworks Berkeley
    https://www.oceanworksberkeley.com › blog
    Oceanworks Berkeley
    https://www.oceanworksberkeley.com › blog
    What is 421A compatible with?
    Description. Refrigerant 421A (R-421A) is a non-ozone depleting, HFC-based blend designed as a direct, eco-friendly, "drop-in" replacement for R-22 in AC and refrigeration systems. It requires no system modifications, oil changes, or special POE oil in most cases, making it compatible with Mineral, AB, or POE oils.

    Refrigerant 421A Specialty Gas size 30 lb Disposable - Arc3 Gases


    Arc3 Gases
    https://www.arc3gases.com › refrigerant-421a-specialty-...
    Arc3 Gases
    https://www.arc3gases.com › refrigerant-421a-specialty-...

    Web results

    Choice™ R421A Refrigerant


    A-Gas
    https://www.agas.com › refrigerant-products › r421a
    A-Gas
    https://www.agas.com › refrigerant-products › r421a
    Choice™ R421A refrigerant is a unique non-ozone depleting replacement for R22. Its performance temperature ranges are also comparable with those of R22.
    Missing: Eco- ‎Friendly

    R-421A Refrigerant Facts & Info Sheet


    Refrigerant HQ
    https://refrigeranthq.com › r-421a-refrigerant-fact-info-...
    Refrigerant HQ
    https://refrigeranthq.com › r-421a-refrigerant-fact-info-...
    Jun 9, 2022 — Most experts recommend R-421A because it's environmentally friendly. It doesn't affect the ozone layer since it doesn't have chlorine and has a ...Read more
    Missing: Eco- ‎| Show results with: Eco-

    Freon Alternatives for Home Air Conditioners


    2-10 Home Buyers Warranty
    https://www.2-10.com › homeowners-warranty › refrig...
    2-10 Home Buyers Warranty
    https://www.2-10.com › homeowners-warranty › refrig...
    HFCs are the newest alternative refrigerants. They contain no chlorine (and are thus safer for the environment), provide improved air quality, increase the ...Read more
    Missing: Eco- ‎| Show results with: Eco-

    Theoretical energy performance assessment and ...


    Sage Journals
    https://journals.sagepub.com › doi
    Sage Journals
    https://journals.sagepub.com › doi
    May 29, 2020 — This study focuses on energy performance investigation and environmental impact analysis of various new ecofriendly refrigerant blends as alternativesRead more

    Shearer Stock - Refrigerant, R421A, 25 lbs


    Shearer Supply
    https://www.shearersupply.com › ... › Refrigerant
    Shearer Supply
    https://www.shearersupply.com › ... › Refrigerant
    ft³ Density Choice™ R-421A is a unique non-ozone depleting replacement for R-22. Usable with Mineral, AB or POE oils, this refrigerant can be be used in air ...Read more
    Popular products
    • R-421A Refrigerant Gas | Alper Refrigerant Gas.
      R-421A Refrigerant Gas | Alper Refrigerant Gas
      $85.00
      Alper Chemical Group
      Free delivery
      R-421A Refrigerant Gas | Alper Refrigerant Gas
      $85.00
      Alper Chemical Group
      Free delivery
    • R421A Cylinder — Choice Refrigerants.
      R421A Cylinder — Choice Refrigerants
      $195.00
      Choice Refrigerants
      R421A Cylinder — Choice Refrigerants
      $195.00
      Choice Refrigerants
    • R-421A Refrigerant 25 LB|CoolmateGas Refrigerant, 1 Cylinder.
      R-421A Refrigerant 25 LB|CoolmateGas Refrigerant, 1 Cylinder
      $426.95
      CoolmateGas
      Free delivery
      5.0(527)
      R-421A Refrigerant 25 LB|CoolmateGas Refrigerant, 1 Cylinder
      $426.95
      CoolmateGas
      Free delivery
      5.0(527)
    • R-421A Refrigerant 25 lb. 1 Cylinder.
      R-421A Refrigerant 25 lb. 1 Cylinder
      $409.00
      eRefrigerants.com
      Free delivery
      5.0(8)
      R-421A Refrigerant 25 lb. 1 Cylinder
      $409.00
      eRefrigerants.com
      Free delivery
      5.0(8)
    • R-421A Refrigerant 25 LB| CoolmateGas Refrigerant.
      R-421A Refrigerant 25 LB| CoolmateGas Refrigerant
      $426.95
      CoolmateGas
      Free delivery
      R-421A Refrigerant 25 LB| CoolmateGas Refrigerant
      $426.95
      CoolmateGas
      Free delivery
    • R-421A Refrigerant R421A 25lb Replacement for R22 (BULK).
      R-421A Refrigerant R421A 25lb Replacement for R22 (BULK)
      $334.33
      Voomi Supply
      Free delivery by Wed
      4.0(1)
      R-421A Refrigerant R421A 25lb Replacement for R22 (BULK)
      $334.33
      Voomi Supply
      Free delivery by Wed
      4.0(1)
    • R-421A Refrigerant 25 LB|CoolmateGas Refrigerant 20 Cylinders $364 each.
      R-421A Refrigerant 25 LB|CoolmateGas Refrigerant 20 Cylinders $364 each
      $7,280.00
      CoolmateGas
      Free delivery
      R-421A Refrigerant 25 LB|CoolmateGas Refrigerant 20 Cylinders $364 each
      $7,280.00
      CoolmateGas
      Free delivery
    • R-421A Refrigerant 25 lb. 10 Cylinders ($359 each).
      R-421A Refrigerant 25 lb. 10 Cylinders ($359 each)
      $3,590.00
      eRefrigerants.com
      Free delivery
      R-421A Refrigerant 25 lb. 10 Cylinders ($359 each)
      $3,590.00
      eRefrigerants.com
      Free delivery

    Web results

    A-Gas Provides One of the First HCFC-22 Destruction ...


    A-Gas
    https://www.agas.com › news-insights › a-gas-provides-...
    A-Gas
    https://www.agas.com › news-insights › a-gas-provides-...
    Through this partnership, A-Gas and Wren have raised awareness about reducing harmful emissions, offering a sustainable solution to refrigerant disposal.Read more

    Army R-22 Refrigerant Phase-Out Strategy - DTIC


    dtic.mil
    https://apps.dtic.mil › sti › trecms › pdf
    dtic.mil
    https://apps.dtic.mil › sti › trecms › pdf
    PDF
    by JP Miller · 2021 · Cited by 1 — CO2 is an environmentally friendly compound with good heat transfer properties with high latent heat of vaporization. ... The refrigerant gas ...Read more
    77 pages

    Wholesale & Bulk HFC Refrigerants Gas| R410A, R134A, R32 ...


    taninrefrigerant.com
    https://www.taninrefrigerant.com › category › hfc
    taninrefrigerant.com
    https://www.taninrefrigerant.com › category › hfc
    R407A is a blend of R32, R125, and R134a, designed as a more environmentally-friendly alternative to R-22. It is widely used for both retrofit and new ...Read more

    Can I replace R22 with R421A or R407A in a walk- ...


    Facebook · A/C Air Conditioning & Heating - HVAC&R help questions & answers
    10+ comments · 1 year ago
    Facebook · A/C Air Conditioning & Heating - HVAC&R help questions & answers
    10+ comments · 1 year ago
    "R-407A/R-407F: Environmentally friendly alternatives to R-404A that are suitable for low and medium-temperature commercial refrigeration ...Read more
    Top answer: Work on walk in cooler and freezer for 40 years change the oil
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