As the global HVACR industry continues its transition towards environmentally friendly and efficient refrigerants, Quzhou Qfreon Chemical Co.,Ltd (Qfreon) stands at the forefront of innovation and quality. Today, we bring you the latest insights and practical advice on the installation of Refrigerant Gas R438A, ensuring that your systems deliver optimal performance, reliability, and sustainability.
Understanding R438A: The Modern Retrofit Solution
R438A, commonly known as ISCEON MO99, is a hydrofluorocarbon (HFC) refrigerant blend designed as a direct replacement for R22 in existing air conditioning and refrigeration systems. With the phase-out of ozone-depleting substances like R22, R438A has become an industry favorite due to its compatibility, efficiency, and minimal retrofit requirements.
- Global Warming Potential (GWP): R438A offers a lower GWP compared to traditional HCFCs, aligning with international environmental regulations.
- Compatibility: It works with existing mineral oil, alkylbenzene, or polyolester lubricants, reducing the need for costly oil changes during retrofitting.
Qfreon is committed to providing high-purity R438A refrigerant that meets and exceeds industry standards, ensuring a seamless transition for our customers worldwide.

Step-by-Step Installation Tips for R438A
1. System Assessment and Preparation
Before introducing R438A into an existing system, conduct a thorough assessment:
- Check for leaks, wear, and tear in all system components.
- Inspect and clean the evaporator and condenser coils to ensure maximum heat transfer efficiency.
- Verify that the system is operating within manufacturer-specified parameters.
Qfreon recommends using certified leak detection tools to prevent refrigerant loss and ensure environmental compliance.
2. Recover Existing Refrigerant and Oil
Proper recovery of the old refrigerant is critical for both safety and environmental responsibility. Use dedicated recovery equipment and follow all local regulations regarding refrigerant handling and disposal.
Although R438A is compatible with most lubricants, Qfreon advises testing lubricant condition and replacing if necessary to prevent future maintenance issues.
3. System Evacuation
Evacuate the system to remove moisture and non-condensable gases. Achieving a deep vacuum is crucial for the longevity and efficiency of the new refrigerant charge. This step prevents system contamination and ensures optimal performance.
4. Charging with R438A
When charging with R438A, always use the refrigerant in its liquid phase to maintain blend consistency. Qfreon supplies R438A in high-quality cylinders designed for safe and accurate dispensing.
- Charge the system to approximately 85-95% of the original R22 charge by weight.
- Monitor system pressures and superheat/subcooling to fine-tune the charge for optimal performance.
5. System Start-Up and Fine-Tuning
After charging, start the system and monitor its performance. Check for abnormal noises, pressure fluctuations, and temperature inconsistencies. Adjust expansion valves or thermostatic controls as needed for the best results.
Qfreon’s technical support team is available to assist with troubleshooting and optimization, ensuring your installation meets the highest standards.
Industry Insights: The Shift Towards Sustainable Refrigerants
The global refrigeration and air conditioning industry is undergoing a significant transformation, driven by environmental regulations and the need for energy efficiency. The adoption of R438A is a testament to the industry’s commitment to sustainability and compliance with the Montreal Protocol and Kigali Amendment. These international agreements aim to phase down high-GWP refrigerants and promote the use of alternatives like R438A.
As a leading supplier, Qfreon not only delivers top-quality refrigerants but also invests in research and development to support the next generation of low-GWP solutions. This approach helps our partners future-proof their systems and operations against regulatory changes and market demands.
Best Practices for Long-Term System Performance
- Regular Maintenance: Schedule periodic inspections and maintenance to detect leaks, monitor pressures, and ensure system cleanliness.
- Proper Documentation: Keep detailed records of refrigerant usage, maintenance activities, and system modifications for regulatory compliance and troubleshooting.
- Training and Certification: Ensure that all technicians handling R438A are trained and certified according to industry standards.
Qfreon offers comprehensive training programs and technical resources to empower our customers and partners in achieving operational excellence.
Spotlight: The Importance of Refrigerant Recovery and Environmental Responsibility
With increasing emphasis on environmental stewardship, the proper recovery and recycling of refrigerants is more crucial than ever. Qfreon encourages all stakeholders to adopt best practices in refrigerant management, supporting a circular economy and reducing the industry’s carbon footprint.
Our commitment extends beyond product supply—we actively collaborate with industry bodies and regulatory agencies to promote responsible refrigerant use and disposal.
Conclusion: Partner with Qfreon for Reliable R438A Solutions
Choosing the right refrigerant and following best installation practices are essential for system performance, regulatory compliance, and environmental sustainability. With Qfreon’s high-quality R438A and expert support, you can confidently upgrade your systems to meet today’s and tomorrow’s challenges.
For more information, technical resources, or to place an order, contact Quzhou Qfreon Chemical Co.,Ltd today. Together, let’s build a more efficient and sustainable future for the HVACR industry.