Which Gas is Used in AC and HVAC in the UAE? The Essential Refrigerant Gas Guide

Refrigerant gas is the lifeblood of any air conditioning or HVAC system. It is a chemical compound that absorbs heat from your indoor space and releases it outside, enabling the essential cooling process. As global environmental regulations evolve, understanding the different types of refrigerants—and their impact—is more important than ever.

In the UAE, several gases are popular and readily available from leading suppliers like Al Faisal A/C Spare Parts.

The 6 Most Popular Refrigerant Gases in the UAE

Refrigerant	Chemical Name	Chemical Class	Status
R-22	Chlorodifluoromethane	HCFC	Phasing Out
R-32	Difluoromethane	HFC	Emerging Standard
R-410A	Difluoromethane + Pentafluoroethane	HFC Blend	Phasing Down
R-134A	Tetrafluoroethane	HFC	Phasing Down
R-1234YF	Tetrafluoropropene	HFO	Next-Generation
R-407C	R-32 + R-125 + R-134A	HFC Blend	R-22 Replacement

Detailed Breakdown: Pros, Cons, and Environmental Impact

R-22: The Universal Gas Used in AC (Phasing Out)

R-22 (a Hydrochlorofluorocarbon or HCFC) was the industry standard for decades.

Pros: Highly reliable, still available for servicing older equipment.
Cons: High Ozone Depletion Potential (ODP) and a high Global Warming Potential (GWP) of $~1,810$ . It is being phased out globally under the Montreal Protocol.
Availability: You can still purchase R-22 for top-ups (e.g., Forane® R22, MAXRON R-22, WESTRON R-22), but new R-22 systems are prohibited.

R-32: The Zero Ozone Depletion Gas Used in AC

R-32 is a Hydrofluorocarbon (HFC) that is rapidly becoming the new industry standard.

Pros: Zero ODP, significantly lower GWP ( $~675$ ) than R-410A and R-22, and offers superior energy efficiency. It is a single-component gas, making it easier to recycle.
Cons: Classified as A2L (mildly flammable), requiring specific equipment and handling.
Usage: An excellent choice for new residential and light commercial AC units. Easily available from Al Faisal A/C Spare Parts.

R-410A: The R-22 Replacement Gas Used in AC (Also Phasing Down)

This gas is a high-pressure blend of R-32 and Pentafluoroethane.

Pros: Zero ODP, more energy-efficient, and provides higher cooling capacity than R-22. Non-flammable (A1 safety class).
Cons: High GWP ( $~2,088$ ), leading to a global phasedown starting soon.
Usage: Used widely in residential and commercial HVAC and heat pumps. Brands include Fastcool, Forane®, MAXRON, ELIWELL, and WESTRON.

R-134A: The Multipurpose Gas Used in AC

Known as Tetrafluoroethane, this HFC class gas is non-toxic and non-corrosive.

Pros: Zero ODP, low toxicity, non-flammable, and suitable for multiple applications.
Cons: High GWP ( $~1,430$ ), leading to its replacement in new equipment.
Usage: Primarily used in automotive cooling systems (car ACs) and large chillers.

R-1234YF: The Ultra-Low GWP Replacement Gas

R-1234YF (a Hydrofluoroolefin or HFO) is the environmentally conscious replacement for R-134A.

Pros: Ultra-low GWP ( $<1$ ), zero ODP, and highly environmentally friendly. It is the choice for carbon-neutral buildings.
Cons: Classified as A2L (mildly flammable). Higher initial cost.
Usage: Mandatory for new vehicle AC systems and the choice for new commercial and residential systems striving for a minimal carbon footprint.

R-407C: The High-Performance Blend

R-407C is a blend that serves as a retrofit option for older equipment.

Pros: Environmentally friendlier than R-22, highly efficient for commercial HVAC. It can be topped up after leakage without significantly compromising cooling capacity.
Cons: Higher GWP than R-32. Exhibits temperature “glide.”
Usage: Can seamlessly replace R-22 in certain existing systems with minor modifications, particularly in commercial units.

❓ People Also Ask (Key HVAC & Refrigerant Questions)

1. What is the difference between Freon and Refrigerant?

Refrigerant is the general term for the chemical compound used for cooling.
Freon is a registered trademark brand name (owned by Chemours) that was historically applied to R-22 and R-12.

2. Does my AC refrigerant need to be topped up or refilled regularly?

No. Refrigerant operates in a closed-loop system. If your unit is losing cooling power, you have a leak. A professional technician must locate and repair the leak before adding more refrigerant.

3. What is GWP and ODP?

ODP (Ozone Depletion Potential): A measure of how much a substance degrades the Earth’s ozone layer. (Target: Zero).
GWP (Global Warming Potential): A measure of how much heat a substance traps in the atmosphere compared to Carbon Dioxide ( $\text{CO}_2$ ). (Target: Low, ideally $\le 750$ ).

Detailed Refrigerant Replacement Guide

Original Refrigerant	Replacement Option(s)	GWP (Approx.)	Compatibility & Oil Change Required	Key Modification Notes
R-22 (HCFC)	R-407C	$1,770$	Requires full change to POE oil.	Recommended Retrofit. Requires TXV adjustments.
R-22 (HCFC)	R-438A (MO99)	$2,265$	Compatible with existing Mineral Oil (MO).	“Near Drop-in” Retrofit. Closest performance match.
R-410A (HFC)	R-32	$675$	Compatible with POE oil.	New Equipment Only. Requires new components designed for A2L.
R-410A (HFC)	R-454B	$466$	Compatible with POE oil.	New Equipment Only. Very low GWP, also A2L.
R-134A (HFC)	R-1234YF	$\le 1$	Compatible with POE oil.	New Equipment/Auto Only. Ultra-low GWP.
R-134A (HFC)	R-513A (XP10)	$631$	Compatible with POE oil.	Low-GWP Retrofit. A near A1 (non-flammable) drop-in.

Which is the Best Gas Used in AC?

The industry trend is definitively moving away from high-GWP HFCs (like R-410A) toward next-generation refrigerants, primarily R-32 and ultra-low GWP HFOs like R-1234YF. These gases offer the best combination of energy efficiency and minimal environmental impact (low GWP and zero ODP).

The best choice depends on your equipment:

New System: Opt for a unit designed for R-32.
Automotive: New vehicles use R-1234YF.
Old R-22 System: Consider a full replacement or a professional retrofit using R-407C.

At Al Faisal A/C Spare Parts, you can find the complete range of refrigerant gases to suit all your equipment needs.

Contact us to consult with an expert on the best, most compliant, and most efficient refrigerant choice for your specific AC or HVAC system.