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R438A (also known as ISCEON® MO99 or Freon™ MO99) is a popular HFC retrofit replacement for R22 in AC and refrigeration systems, available from suppliers including A-Gas, Weitron, Linde, and Alper Refrigerants. It is frequently sold in 25 lb cylinders and requires EPA certification to purchase.
Top R438A Suppliers & Distributors
- JJ AC Supply: Stocks R438A/MO99 25 lb cylinders.
- Weitron: Known as a major supplier of R438A retrofit solutions for R22.
- Alper Refrigerants: Offers EPA-certified bulk and container load pricing.
- Linde Gas: A major global distributor for ISCEON® MO99 (R438A).
- Budget Heating: Sells Freon MO99 in 25lb jugs.
- Royal Refrigerants: Offers sealed 25 lb cylinders.
Key Information About R438A (MO99)
- Application: Ideal for residential/commercial AC and commercial refrigeration, including low and medium temperatures.
- Compatibility: Compatible with traditional mineral oils and polyolester (POE) lubricants, often requiring no oil change during retrofit.
- System Impact: R438A acts as a "top-off" replacement with minimal system modification.
- Characteristics: It is a HFC blend (R-32, R-125, R-134a, R-600, R-601a).
Note: Always ensure you are purchasing from reputable suppliers to guarantee refrigerant quality, especially when sourcing in bulk for industrial projects.
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Freon™ MO99™ (R-438A) Refrigerant, an R-22 Replacement
freon.com
https://www.freon.com › products › refrigerants
freon.com
https://www.freon.com › products › refrigerants
Learn how Freon™ MO99™ (R-438A) can be used as a retrofit refrigerant for R-22. Using Freon™ MO99™ does not require an oil change.
R438A Refrigerant, 25 lbs cylinder
jj ac supply
https://www.jjacsupply.com › product-page › r438a-25-l...
jj ac supply
https://www.jjacsupply.com › product-page › r438a-25-l...
R438A (Freon™/Isceon MO99) is a HFC blend, used as a replacement for R22 in domestic, industrial and commercial air-conditioning systems; It is also a retrofit ...Read more
R-438A Refrigerant, 25 lb Cylinder, A1, Virgin, MO99
The Habegger Corporation
https://www.habeggercorp.com › R438A-0025
The Habegger Corporation
https://www.habeggercorp.com › R438A-0025
The R-438A Refrigerant (R438A-0025) is an A1 classified HFC blend refrigerant supplied in a 25 lb cylinder and marketed as MO99 for use in approved retrofit ...Read more
30-day returns
R-438A Wholesale Price 2026 | Alper
Alper Refrigerants
https://alperrefrigas.com › Products › Refrigerants
Alper Refrigerants
https://alperrefrigas.com › Products › Refrigerants
HFC refrigerant blend designed for retrofitting R-22 systems. Non-ozone depleting with excellent thermodynamic properties. Freon™ MO99™ (R‑438A) – Advanced ...Read more
$85.00In stockFree delivery30-day returns
R-438A Refrigerant | Retrofit Solution for R-22
Weitron
https://weitron.com › product
Weitron
https://weitron.com › product
R-438A is a retrofit solution with the closest performance match to R-22 and requires minimum modification in the HVAC systems.
R438A | Product Information
A-Gas
https://www.agas.com › refrigerants › r438a-mo99
A-Gas
https://www.agas.com › refrigerants › r438a-mo99
R438A (Freon™/Isceon MO99) is a HFC blend, used as a replacement for R22 in domestic, industrial and commercial air conditioning systems.Read more
People also ask
Is R438A a direct replacement for R-22?
Since fluorochemical refrigerants were introduced to the market more than 85 years ago, the Freon™ brand has been developing and evolving the chemistry behind them. Among those products is Freon™ MO99™ (R-438A), a retrofit refrigerant for R-22 that does not require an oil change.
Freon™ MO99™ (R-438A) Refrigerant, an R-22 Replacement
freon.com
https://www.freon.com › products › refrigerants
freon.com
https://www.freon.com › products › refrigerants
Web results
Wholesale Pure R438A Regrigerant Gas Manufacturer & Supplier
taninrefrigerant.com
https://www.taninrefrigerant.com › Refrigerant
taninrefrigerant.com
https://www.taninrefrigerant.com › Refrigerant
R438A is an HFC-based, non-ozone-depleting refrigerant designed to replace R22 in existing air conditioning and refrigeration systems.
R438A Refrigerant | Wholesale
RGAS Refrigerants
https://rgasrefrigerants.com › products › R438A
RGAS Refrigerants
https://rgasrefrigerants.com › products › R438A
RGAS Refrigerants provides wholesale prices and nationwide delivery of R438A refrigerant. Various quantities available to meet your business needs.
R438A Refrigerant Retrofit Replacement for R22 HVAC ...
Voomi Supply
https://voomisupply.com › products › r438a-refrigerant-...
Voomi Supply
https://voomisupply.com › products › r438a-refrigerant-...
Mar 13, 2026 — R438A refrigerant is a hydrofluorocarbon blend developed as a retrofit replacement for R22 in air conditioning and refrigeration systems. Often ...Read more
Freon MO99 (R438A) Refrigerant 25lb. Jug - 'Top Off
Budget Heating and Air Conditioning
https://www.budgetheating.com › ... › 20lb - 30lb JUGS
Budget Heating and Air Conditioning
https://www.budgetheating.com › ... › 20lb - 30lb JUGS
Freon MO99 is the closest match to R-22 of all no oil change replacement refrigerants. It is compatible with all traditional and new lubricants.Read more
$420.00In stock5–8 day delivery30-day returns
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