The first thing our technicians at AC Service Pro Cheras check on any service call is the nameplate sticker on the outdoor unit. Not the model number. The refrigerant type. Getting that one detail wrong is how compressors end up in the scrap pile.
Three refrigerants dominate the Malaysian residential market: R22, R410A, and R32. They look almost identical in the cylinder but they behave completely differently, and mixing them up is one of the fastest ways to turn a RM150 top-up into a RM2,000 compressor replacement.
This article explains what each one is, when it was used, and what to do if your system needs a recharge.
Why You Cannot Swap Them
The first question customers usually ask is why the technician cannot just use whatever cylinder is in the van. Three reasons:
- Pressure: R410A runs 50 to 70 percent higher pressure than R22. Pumping R410A into an R22 system will rupture the weaker piping.
- Oil compatibility: R22 compressors use mineral oil. R410A and R32 need synthetic polyolester (POE) oil. Mixing the two creates a thick sludge that seizes the compressor.
- Charge weight: Each gas needs a different mass for the same cooling output. Eyeballing it is not an option.
Any technician willing to “just top it up” without checking the refrigerant type is a technician you do not want touching your unit.
R22: The Gas Being Phased Out
Hydrochlorofluorocarbon (HCFC) was the residential standard from the 1990s through the early 2010s. If your aircond is more than a decade old and has never been replaced, it is almost certainly R22.
Malaysia is actively phasing R22 out under the Montreal Protocol. The Department of Environment’s HCFC Phase-Out Management Plan targets a complete ban by 2030, and import quotas are already driving prices up. What cost RM60 five years ago can run past RM160 today.
What to know:
- Global Warming Potential (GWP): 1,810
- Ozone damage: Yes, ODP of 0.055
- Current top-up cost in Cheras: RM80 to RM160
- Our recommendation: If the system needs any major repair, upgrade to a modern R32 unit. You will recover the cost through lower electricity bills within three to four years.
R410A: The Middle Generation
R410A replaced R22 as the HFC standard from roughly 2010 to 2018. Most inverter and non-inverter splits sold during that window ran on R410A, including the popular Daikin and Panasonic inverter lines common in Taman Segar and similar neighbourhoods.
R410A is ozone-friendly but carries a massive GWP of 2,088, which is actually higher than R22. For that reason the global industry has already started phasing it out in favour of R32.
What to know:
- GWP: 2,088
- Ozone damage: None
- Top-up cost: RM100 to RM180
- Operating pressure: Significantly higher than R22, so never substitute
R32: The Current Standard
Single-component HFC refrigerant, rolled out across Malaysia from 2018 onward. Every new Daikin, Panasonic, Acson, Midea, and York split sold today uses R32.
The real advantage is efficiency. R32 units need about 20 percent less refrigerant mass for the same cooling output, and a 2024 study on Malaysian systems showed variable-speed R32 units cutting greenhouse emissions by up to 63 percent compared to older fixed-speed designs.
- GWP: 675 (roughly one third of R410A)
- Ozone damage: None
- Top-up cost: RM130 to RM180
| Refrigerant | Era | GWP | Cheras Top-Up Range |
|---|---|---|---|
| R22 | Pre-2015 | 1,810 | RM80 to RM160 |
| R410A | 2010 to 2018 | 2,088 | RM100 to RM180 |
| R32 | 2018 to today | 675 | RM130 to RM180 |
How to Identify What Your Unit Uses
The quickest check is the outdoor nameplate. Look for a line labelled “Refrigerant” or “R-Type”. Most brands stamp it onto the metal or print it on a durable sticker near the service valves.
The Cheras sun tends to fade those stickers within a few years, especially on rooftop installations. If yours is unreadable, you have a few fallbacks:
- The indoor unit cover sometimes carries a smaller label
- The original purchase invoice or user manual always lists the gas
- Age is a reliable hint: pre-2010 is almost always R22, 2010 to 2018 is usually R410A, 2018 onward is R32
Still not sure? Send us a photo on WhatsApp. Our team can usually identify the gas from the nameplate or the compressor model alone.
Why “Just Keep Topping Up” Is Bad Maintenance
This is the single most important section of this article, so read it twice.
Refrigerant does not run out in a healthy aircond. The gas circulates in a completely sealed loop. If your unit is low on gas, there is a leak somewhere: a loose flare connection, a corroded pipe, or a failing service valve. Topping up without finding and sealing the leak is a temporary fix that will fail again within weeks.
Our standard gas top-up procedure looks like this:
- Pressure test: Read current pressure against manufacturer spec
- Leak detection: Electronic sniffer or bubble test on suspected joints
- Minor leak repair: Solder or replace the damaged section
- Vacuum: Pull air and moisture out of the system
- Charge: Weigh in the exact amount of the correct gas
Skip any of those steps and you are throwing money away.
The Chemical Wash Bundle Worth Knowing About
If your unit is due for maintenance and also running low, book a chemical wash rather than a standalone top-up. Every chemical wash from AC Service Pro Cheras includes up to 10kg of refrigerant charge at no extra cost. That covers a full recharge for most 1.5 to 2.5 HP residential units.
You get a deep clean and a gas top-up in one visit, and save RM80 to RM250 in the process.
Book a Diagnostic Visit
If you suspect a leak or need a straightforward top-up, WhatsApp us at 012-2252 623 with your unit’s HP rating, brand, age, and what symptoms you are seeing. We will quote a fixed price and confirm a same-week slot.
More details on the gas top-up service if you would like to see exactly what is included.
