What is R32 refrigerant?

R32 is a hydrofluoroolefin (HFO) refrigerant gas that has become standard in modern split-unit air conditioning systems installed across Singapore, including Tampines. It replaced older refrigerants like R22 (chlorofluorocarbon-based) which are being phased out under the Montreal Protocol due to ozone depletion concerns.

The key difference between R32 and R22 lies in environmental impact and efficiency. R32 has a global warming potential (GWP) of approximately 675, significantly lower than R22's GWP of 1,810. R32 also operates at higher pressures, allowing units to use less refrigerant charge while delivering the same cooling output, which reduces both running costs and environmental footprint.

From a safety perspective, R32 is mildly flammable, classified as A2L. This means air conditioning contractors must follow stricter handling procedures during installation, maintenance, and refilling compared to non-flammable refrigerants. Tampines-based contractors working with R32 systems must follow regulations set by Singapore's Environmental Protection and Management Act and use properly certified equipment.

Most new air conditioners sold in Singapore use R32, and existing R22 units can sometimes be retrofitted, though this requires professional assessment. When your split unit needs gas refilling or servicing, confirm with your contractor whether your system uses R32 or an older refrigerant, as handling and costs differ. For air conditioning providers offering refrigerant services, R32 compatibility is now a standard offering.