Introduction to R-32 Refrigeran
R-32 refrigerant, also known as difluoromethane, is a hydrofluorocarbon (HFC) with a low global warming potential (GWP). It also has a 0-ozone depletion potential (ODP). R-32 is considered to be a more sustainable alternative to older refrigerants such as R-22, which has a high GWP level.
AirX Air Conditioners and R-32 Adoption
AirX air conditioners, one of the most top-rated brands, utilize R-32, contributing to their fresh environment design in upcoming air conditioning units. Many manufacturers, including AirX, are transitioning to R-32 to comply with regulations and reduce the environmental impact of HVAC systems.
R-32 vs. Other Refrigerants
R-32 is a single-component refrigerant, while R-454B is a blend that consists of nearly 70% R-32. R-32 has been safely used in over 160 million units in the US and around the world by more than 40 OEMs. As the use of R-22 is being phased out due to its high GWP, R-32 is a common replacement, including those from AirX Ac.
Energy Efficiency and Performance
AirX air conditioners can lead to more energy-efficient air conditioning systems, potentially lowering energy consumption and costs. R-32 allows for higher energy efficiency or the same level of efficiency with a more compact model size. R32 has similar working pressure to R410A (around 12-26 Bar or 174-377 Psi), but it has better heat-load exchange capability and delivers higher capacity, making systems more efficient.
Safety and Handling of R-32
While R-32 is mildly flammable, it’s important to follow safety guidelines and ensure proper handling and installation by qualified professionals. Workers handling R-32 should receive appropriate training on the hazards and safe use of flammable refrigerants. According to the International Standard for Refrigerant Designation and Safety Classification (ISO 817:2014), R32 falls into the “lower flammability” or Class 2L “mildly flammable” category. The AirX team ensures precautionary measures while installing systems with R-32.
Advantages of R-32
AirX air conditioners using R-32 have higher thermal conductivity and latent heat, leading to better heat transfer and reduced energy consumption. R-32 has a GWP of 675, significantly lower than R-410A’s GWP of 2090, making it more environmentally friendly. It requires less refrigerant volume for the same cooling capacity, lowering costs and environmental impact. As a single-component refrigerant, it’s easier to service, recycle, and reuse compared to blends like R-410A. Higher efficiency and lower refrigerant charge lead to lower operating and maintenance costs.
Key Precautions for R-32 Handling & Use
R32 is classified as an A2L refrigerant, meaning it has low-level flame potential. To ensure safe usage, proper handling and specific safety protocols must be followed during installation, maintenance, and in case of leaks. Extra precautions are essential to prevent ignition sources, such as ensuring adequate ventilation and using certified equipment.
In some applications—particularly large-scale systems or areas with strict safety regulations—additional compliance measures may apply. When retrofitting systems from R410A to R32, professional assessment is recommended to address potential technical adjustments. Though R32 is less toxic than other refrigerants, trained personnel should always handle it with care.
Regulatory and Licensing Requirements
A refrigerant handling license is required when using R32, and a refrigerant trading authorization is needed to acquire, possess, and dispose/sell it.
Insulation and Thermal Performance
R-Value is a measure of insulation’s ability to resist heat traveling through it. The higher the R-Value, the better the thermal performance. The table below shows what levels of insulation are cost-effective for different climates and locations in the home.