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$329.00
Keep your HVAC service inventory ready with this 25 lb R-438A refrigerant cylinder, supplied new and factory sealed for professional HVAC and refrigeration applications. R-438A is a non-ozone-depleting HFC refrigerant...

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Categories: HVAC, R-438A (MO99)
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Keep your HVAC service inventory ready with this 25 lb R-438A refrigerant cylinder, supplied new and factory sealed for professional HVAC and refrigeration applications.

R-438A is a non-ozone-depleting HFC refrigerant blend commonly used as a retrofit option in certain existing R-22 air-conditioning and refrigeration systems. It is designed to help qualified HVAC-R professionals extend the service life of compatible legacy equipment when an approved retrofit procedure supports its use.

This American-branded R-438A 25 lb cylinder is a practical option for HVAC contractors, service technicians, mechanical contractors, facility maintenance teams, and commercial buyers maintaining compatible equipment.

Always verify equipment requirements and follow the refrigerant supplier's retrofit guidance and equipment manufacturer's service instructions before converting or charging any system.

R-438A Refrigerant Product Details

  • Refrigerant: R-438A

  • Cylinder size: 25 lb

  • Condition: New, factory sealed

  • Product positioning: American-branded refrigerant

  • Refrigerant type: HFC blend

  • Components: R-32, R-125, R-134a, R-600, and R-601a

  • Safety classification: A1

  • Ozone depletion potential: 0

  • EPA SNAP GWP reference value: 2,270

  • Common application: Approved retrofit and service applications involving compatible R-22 equipment

  • Purchase requirements: Applicable EPA refrigerant sales restrictions apply

R-438A Refrigerant for Existing R-22 Systems

R-438A was developed for use in certain air-conditioning and refrigeration systems that historically operated with R-22.

It is commonly considered for retrofit projects involving compatible direct-expansion residential and commercial air-conditioning equipment as well as certain refrigeration applications.

Potential applications may include:

  • Residential air-conditioning systems

  • Commercial air-conditioning equipment

  • Packaged rooftop units

  • Heat pumps

  • Certain commercial refrigeration systems

  • Medium- and low-temperature refrigeration equipment

  • Other compatible direct-expansion R-22 systems

Not every R-22 system is automatically suitable for R-438A.

System design, compressor requirements, lubricant condition, expansion devices, operating temperatures, controls, and manufacturer guidance should all be considered before selecting a retrofit refrigerant.

Is R-438A a Replacement for R-22?

R-438A can be used as an R-22 retrofit refrigerant in certain approved applications, but it should not be marketed as a universal drop-in replacement for every R-22 system.

A proper retrofit requires professional evaluation of the existing equipment and operating conditions.

Before converting an R-22 system to R-438A, technicians should evaluate:

  • Equipment manufacturer recommendations

  • Compressor compatibility

  • Existing lubricant

  • Expansion device operation

  • Seals and elastomers

  • Refrigerant charge requirements

  • Operating pressures and temperatures

  • System controls

  • Refrigerant recovery requirements

The existing R-22 charge should be properly recovered according to applicable requirements before charging the system with the approved replacement refrigerant.

Do not mix R-438A and R-22 in the same system.

R-438A and Lubricant Compatibility

One reason R-438A is considered for certain R-22 retrofit projects is its compatibility with several lubricant types commonly encountered in legacy HVAC and refrigeration systems.

Depending on the specific equipment and retrofit procedure, R-438A may be used in systems containing mineral oil, alkylbenzene, or POE lubricant.

However, lubricant requirements are not identical for every system.

Oil return depends on equipment design, piping configuration, operating conditions, and compressor requirements. Some systems may require lubricant adjustments or other modifications during a retrofit.

Always follow the refrigerant supplier's retrofit procedure and equipment manufacturer's recommendations rather than assuming that no oil-related changes will be necessary.

R-438A vs. MO99 Refrigerant

R-438A and MO99 are closely related terms, but they are not interchangeable brand names.

R-438A is the standardized refrigerant designation. Freon™ MO99™ is Chemours' branded R-438A refrigerant.

This product is offered as an American-branded, factory-sealed R-438A refrigerant cylinder. Buyers specifically requiring Chemours Freon MO99 should confirm the manufacturer and cylinder label before ordering.

Regardless of brand, a product represented as R-438A should meet the applicable refrigerant composition and product specifications for R-438A.

What Is R-438A Refrigerant?

R-438A is a blended HFC refrigerant consisting primarily of R-125 and R-134a, along with R-32 and small quantities of hydrocarbons.

The standard composition is approximately:

  • 45.0% R-125

  • 44.2% R-134a

  • 8.5% R-32

  • 1.7% R-600

  • 0.6% R-601a

R-438A has zero ozone depletion potential and carries an A1 safety classification under the applicable refrigerant safety standard.

Although it does not deplete the ozone layer, R-438A is still a relatively high-GWP HFC blend by current standards. Its primary value in today's HVAC market is therefore associated with maintaining and retrofitting appropriate existing equipment rather than positioning it as a next-generation refrigerant for new systems.

Factory-Sealed 25 lb R-438A Cylinder

This product is supplied in a new factory-sealed 25 lb cylinder, providing HVAC-R professionals with a manageable refrigerant quantity for approved retrofit and service work.

The 25 lb size is well suited for contractors and maintenance teams servicing multiple compatible systems or maintaining refrigerant inventory for planned retrofit projects.

Before use, inspect the cylinder labeling and verify:

  • Refrigerant designation

  • Manufacturer or brand

  • Cylinder condition

  • Applicable Safety Data Sheet

  • Service connection

  • Equipment compatibility

  • Required retrofit procedure

Store and transport refrigerant cylinders in accordance with applicable regulations and product handling instructions.

Is R-438A Still Used?

Yes. R-438A continues to be relevant for servicing and retrofitting certain existing equipment originally designed for R-22.

R-22 production and import for newly manufactured refrigerant have ended in the United States, creating continued demand for appropriate service and retrofit strategies for legacy R-22 equipment.

R-438A allows qualified professionals to consider maintaining compatible existing equipment without automatically replacing the entire cooling system.

However, retrofit decisions should be based on the condition and design of the equipment, manufacturer guidance, applicable regulations, and the economics of continued system operation.

R-438A Safety and Professional Handling

R-438A carries an A1 safety classification, meaning it is classified as lower toxicity and does not propagate flame under the applicable refrigerant classification standard.

It is still a liquefied gas stored under pressure and requires appropriate professional handling.

HVAC-R professionals should follow:

  • The product Safety Data Sheet

  • Equipment manufacturer instructions

  • Refrigerant supplier retrofit procedures

  • Appropriate recovery procedures

  • Applicable federal, state, and local regulations

  • Proper cylinder transportation and storage requirements

  • Appropriate personal protective equipment requirements

Use professional HVAC-R service, charging, and recovery equipment suitable for the application.

Do not intentionally vent refrigerant into the atmosphere.

Who Can Purchase R-438A Refrigerant?

Federal refrigerant sales restrictions apply to R-438A intended for stationary air-conditioning and refrigeration equipment.

Purchasers generally must be EPA Section 608 certified technicians, qualifying employers or authorized representatives of certified technicians, resellers meeting applicable requirements, or other purchasers permitted under federal regulations.

Section 609 certification applies to motor-vehicle air-conditioning applications and does not by itself authorize the purchase of refrigerant intended for stationary HVAC and refrigeration equipment.

Buyers should also verify applicable state and local restrictions before ordering.

Buy 25 lb R-438A Refrigerant Online

Royal Refrigerants supplies HVAC contractors, refrigeration technicians, mechanical contractors, facility teams, and commercial buyers with refrigerants for a broad range of cooling applications.

If you are searching for R438A refrigerant for sale, this 25 lb American-branded, factory-sealed cylinder provides an option for qualified professionals performing approved retrofit and service work on compatible equipment.

Royal Refrigerants combines more than 40 years of refrigerant-industry experience with broad product availability, competitive pricing, knowledgeable support, nationwide order fulfillment where permitted, and bulk purchasing options for commercial buyers.

We offer FREE continental US shipping. Most orders are shipped same day or next day by Hazmat Ground. You will receive an email notification with tracking when your order is shipped.
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