About the R-454B Refrigerant Transition and What It Means for Your Heat Pump

By: Phil Rains

If you have a heat pump in your home, chances are good that it was installed with an R-410A refrigerant. For the last several years, R-410A has been the go-to refrigerant for residential HVAC systems. That is changing soon, however.

In an effort to reduce environmental impact, all HVAC manufacturers in the United States, including Bosch, are required to move towards using low global warming potential (GWP) refrigerants in new products. As a result, R-410A is currently being phased down. In 2025, new R-410A systems will no longer be manufactured.

During a time when many of us are more conscious of our carbon footprint than ever before, the rise of A2L R-454B refrigerant mirrors a broader societal shift towards sustainability. Bosch believes you should be armed with the facts so that you can know what to expect over the next 10 to 15 years, and work with a professional technician to determine the best option for your home.

Do I need to replace my R-410A heat pump?

You will not need to replace your heat pump overnight. That being said, there could be impacts on maintenance and repair costs in the future. As R-410A becomes less available, the cost to recharge or service your existing R-410A heat pump will likely increase.

Here is something else to think about: Did you buy your heat pump recently or have you had it for years? It may also be time to consider getting a new system if your current R-410A system is getting old.

What kind of low GWP refrigerant will Bosch use going forward?

New Bosch heat pumps will use an A2L refrigerant, R-454B, that has a reduced effect on the ozone layer and is non-toxic.

Upgrading to a new Bosch system with R-454B refrigerant aligns with the latest regulations and could potentially help you save money over time. These new heat pumps will require easier maintenance and availability of Bosch parts.

How safe is the new A2L R-454B refrigerant?

Many of the safety protocols commonly used in recent years by technicians still apply for R-454B. However, there are some new protocols pertaining specifically to A2L refrigerant contractors will have to follow.

Because A2L refrigerants are considered mildly flammable, technicians will be required to strictly adhere to rigorous safety standards and guidelines to ensure its secure handling and use. Bosch HVAC professionals undergo specific training to safely work with A2L R-454B refrigerant.

What can I do to get ready for the refrigerant change?

Bosch recommends you consider preparing for the change by identifying your system’s refrigerant type and system age and explore options for replacement. Always consult the professional HVAC experts to understand the best option for your home.

HVAC professionals will educate you on the transition to A2L R-454B refrigerant in Bosch heat pumps and how it will impact your service. This process will keep you up to date and build trust with your contractor as the expert in the industry.

By staying informed and preparing for these changes, you can ensure your heat pump remains efficient, environmentally friendly, and compliant with new regulations. If you have questions about how these changes affect your HVAC system or if you’re considering an upgrade, your local Bosch Home Comfort Pro contractor is here to help. Find a Bosch Home Comfort Pro in your area by visiting our Dealer Locator page.

Resources

A2L Refrigerant Change Guide

Dealer Locator

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