R32 vs R410A vs R22 Aircond Gas: Differences, PSI and Topup Price

Short answer: R32 is what almost every new aircond in Malaysia uses. R410A is the previous generation, still very common in units bought before about 2019. R22 is the oldest and is being phased out globally, so topups still work but get more expensive each year. Here's how to tell which one you have, what pressure each runs at, and why it matters when you top up.

R32 vs R410A vs R22 at a glance

Where to find your gas type

You don't have to guess. Every aircond has a metal nameplate stuck to either the indoor or outdoor unit that lists the refrigerant type. Look for a line that reads "REFRIGERANT" followed by R32, R410A or R22. On outdoor units the plate is usually on the side panel. On indoor units it's often behind the front cover, near the pipe connections.

If you can't find the plate, WhatsApp us a photo of your outdoor unit and we'll tell you.

R32: the current standard (2019+)

R32 replaced R410A in most new aircond models sold in Malaysia from around 2019 onwards. It cools more efficiently, uses less refrigerant per unit, and has a lower global-warming impact.

• Pressure: slightly higher than R410A, so pipes and fittings are rated for it
• Topup cost: reasonable, widely available
• Safety: mildly flammable (A2L class), which is why servicing must be done by a technician who knows the correct handling procedure

If your unit was bought new since 2019, it almost certainly uses R32.

R410A: the previous standard (2005 to 2019)

R410A was the industry standard before R32 took over. Most aircond installed between roughly 2005 and 2019 use it. It's still fully available in Malaysia, still safe to top up, and still supports a huge share of installed units.

• Pressure: much higher than R22
• Topup cost: mid-range, still very common
• Long-term: you don't need to replace a working R410A unit just because a newer refrigerant exists

R22: being phased out

R22 was the standard refrigerant for aircond installed roughly before 2005. It contains chlorine, which damages the ozone layer, and is under global phase-out. Malaysia is following the international schedule, which means:

• Topups: still possible, but supply keeps shrinking
• Recharge after a leak: getting expensive, and at some point will not be economical
• Replacement: if your R22 unit needs a major repair (compressor, coil), replacing it is often cheaper than repairing it. See our aircond installation page for guidance.

What is the normal gas pressure (psi) for a home aircond?

This is one of the most searched questions about aircond gas, and the honest answer is: it depends. The figures below are rough guides for the low-side (suction) reading on a typical home wall split while it's running in Malaysian weather.

Three things move that number: how hot it is outside, how much heat is in the room, and the specific model. A reading on a hot afternoon is not the same as a reading at night. That's why a good technician never tops up "until the gauge looks right". We also check the temperature of the air coming out, the pipe temperatures and the current the compressor draws, then compare against the manufacturer's spec.

Low psi almost always means a leak. An aircond is a sealed system. Gas doesn't get "used up" like petrol, so if the pressure is low, it has escaped somewhere, usually at a flare joint or the coil.

Why the gas type matters for a topup

Refrigerants can't be mixed. If a unit designed for R22 is topped up with R410A, the pressure is wrong and the compressor is damaged, sometimes fatally. Any real aircond technician will confirm the gas type on the nameplate before topping up. If they don't, that's a warning sign.

At Marvel, our gas topup process always starts with:

1. Nameplate check: confirm R32, R410A or R22
2. Pressure test: a sealed system shouldn't lose gas at all; if it's low, there's a leak
3. Leak repair: fix the leak before topping up, otherwise the new gas is gone in weeks
4. Topup to the correct pressure: with the correct refrigerant
5. Cooling test: confirm the unit is actually cold before we leave

How much does an aircond gas topup cost?

Our gas topup price is the same for R32, R410A and R22. It's based on the size of the unit:

If we find a leak, the leak repair is quoted separately before any work, on the aircond repair page rates.

Should I upgrade my R22 aircond to R32?

You can't just swap the refrigerant. The compressor, coil, expansion valve and pipe sizing are all designed around one specific gas. Upgrading really means replacing the whole aircond, which is worth doing when:

• The R22 unit is 10+ years old
• It needs a compressor or coil replacement
• Your TNB bill has climbed sharply (newer inverter units use noticeably less power)

If any of that applies, WhatsApp us the model number and we'll advise honestly. Sometimes repair is still the right call. Not sure what size to buy? Our aircond HP size guide helps.

Bottom line

You don't need to memorise refrigerant chemistry. You just need to know that (1) your unit uses one specific type, (2) that type is printed on the nameplate, (3) low pressure means a leak, and (4) any legitimate aircond service confirms the gas before touching it. When you book a gas topup with us, that's exactly what we do.