R-410A has been the standard refrigerant in home air conditioning systems for over two decades. It replaced R-22 due to its improved efficiency and reduced harm to the ozone layer.
Now, as part of a global shift toward more environmentally responsible refrigerants, the HVAC industry is beginning to transition from R-410A to newer options like R32 and R-454B. This change is gradual and applies to newly manufactured and imported systems. Existing systems already installed in homes will remain supported.
Why Are Things Changing?
Although R-410A does not deplete the ozone layer, it has a high Global Warming Potential (GWP) of 2,088. When released into the atmosphere, it contributes more to climate change than many of the newer alternatives.
To reduce the environmental impact of refrigerants, many countries, including Canada, are working toward an 85 percent reduction in the use of high-GWP hydrofluorocarbons (HFCs) by 2036.
As of January 1, 2025, the production or import of new HVAC equipment using R-410A was stopped. However, the refrigerant itself will remain available for servicing and repairs on existing systems for many years.
What’s Replacing R-410A?
Two refrigerants are emerging as the new standard due to their lower GWP ratings:
R32
- GWP of 675
- High efficiency and strong cooling power
- Requires less refrigerant to operate
- Classified as mildly flammable, but used safely in modern HVAC systems
R-454B
- GWP of 466
- Similar pressure and performance to R-410A
- Lower flammability than R32
- Quickly gaining popularity in North American residential systems
Both refrigerants allow for more sustainable operation without sacrificing comfort or efficiency.
What This Means for Homeowners
You don’t need to replace your current system
If your R-410A system is working properly, there is no requirement to upgrade. This transition only affects new equipment.
Servicing will still be available
Technicians will continue to have access to R-410A for maintenance and repairs, along with the tools and training to support existing systems.
New equipment will use new refrigerants
If you plan to replace your system in the coming years, expect new units to use R32 or R-454B. These refrigerants are now standard in most newly manufactured and imported equipment.
Plan ahead if your system is aging
If your system is more than 15 years old, it may be time to start exploring replacement options. New systems are more energy-efficient, use low-GWP refrigerants, and may be eligible for rebates or other incentives. Planning ahead can help you avoid surprise costs down the line.
Why Make the Switch When the Time Comes?
- Lower environmental impact
- Better energy efficiency and potential utility savings
- Easier access to refrigerant and parts in the future
- Possible rebates or government incentives
There is no urgency to upgrade, but when the time comes, newer systems can offer long-term benefits for both the environment and your home comfort.
Need Help Navigating Your Options?
The transition to refrigerants like R32 and R-454B is a planned industry shift toward sustainable technology. There is no need to take immediate action unless your system is nearing the end of its life.
For most homeowners, this is simply something to be aware of when it comes time to replace or upgrade your HVAC system. Your next unit will likely use one of these newer refrigerants, offering improved performance and efficiency.
If you have questions or want to learn more about your options:
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Team Harding has been Ottawa’s leading home comfort specialist since 1994. We are a family-owned and operated local business and all of our installers and technicians are fully licensed.
