How to charge R32

R32 can be charged like any other refrigerant gas. You can read more about the refrigerant charging process on our blog. R32 is replacing R410a and it is a bit different. We made an article about the differences of R32 and R410a.

Working pressures for R32 are very similar to R410A and, when charging, R32 is easier to handle, says Daikin, as, unlike R410A, it can be charged in both a gas and a liquid state.

Equipment and installation and service instructions are said to be similar to R410A – ventilation required, no smoking, etc. When repairing an indoor unit, a draught needs to be created from indoors to outdoors to provide good ventilation. It is advised that this can be created by opening all windows and doors in the building.

Tools like manifolds, leak detectors and recovery pumps also need to be suitable for use with R32. Engineers in any doubt need to check with the tool supplier. In some cases, a cylinder adapter may be required as the R32 refrigerant cylinder may have a different thread.

📌Do you charge R32 as a liquid or gas?

Working pressures for R32 are very similar to R410A and, when charging, R32 is easier to handle, as, unlike R410A, it can be charged in both a gas and a liquid state

📌Can you top up R32 gas?

Top up of a system with R32 is not recommended. Its recommended 100% recovery of all R32 from a system using a compliant recovery unit and then fully recharging the system.

📌Can you charge a R32 system with R410A?

Can a R32 system be charged with R410A or vice versa? The simple answer is no. The operating characteristics of both refrigerants are different and the systems have been designed accordingly. One example is that the compressor runs hotter for a R32 system so the compressor design will be different.

📌Do you need a special vacuum pump for R32?

Although there should be minimal refrigerant in a system ready for vacuum, it is not guaranteed and with the pending increase in the size of R32 units on the market.

📌Is R32 safe to breathe?

Do not get in eyes or on skin or clothing. Avoid breathing gas. Use only with adequate ventilation. Wear appropriate respirator when ventilation is inadequate.