R438A (MO99) Refrigerant is a high-performance HFC replacement for R22 in existing air conditioning and refrigeration systems. Designed to minimize retrofit requirements, R438A provides reliable cooling performance, excellent energy efficiency, and compatibility with existing mineral oil, alkylbenzene (AB), and POE lubricants in many applications.
MO99 is widely used as an R22 replacement in residential and commercial air conditioning, medium- and low-temperature refrigeration, refrigerated display cases, walk-in coolers, freezers, and process cooling equipment. With proper retrofit procedures, it helps extend the service life of existing R22 systems while eliminating the need for virgin R22.
Features
Excellent replacement for R22 in existing systems
25 lb disposable cylinder
Minimal system modifications required in many retrofits
Compatible with mineral oil, alkylbenzene (AB), and POE lubricants in many applications
Reliable cooling capacity and energy-efficient operation
Suitable for air conditioning and refrigeration applications
Zero ozone depletion potential (ODP)
Lower retrofit costs compared to complete system replacement
Common Applications
Residential air conditioning
Commercial rooftop units
Heat pumps
Walk-in coolers and freezers
Reach-in refrigerators and freezers
Refrigerated display cases
Medium- and low-temperature refrigeration systems
Process cooling equipment
Important Information
Always follow the equipment manufacturer's retrofit recommendations.
Systems should be properly evacuated and leak tested before charging.
Use only by trained HVAC/R professionals following EPA regulations.
EPA Notice
EPA Section 608 Certification is required to purchase regulated refrigerants in accordance with federal law. This product is intended for use by certified technicians or where otherwise permitted by EPA regulations.