The Transition from R-410A to R-454B and R-32 Refrigerants: What Homeowners Need to Know

If you’re a homeowner, you might have caught wind of the HVAC industry’s recent shift from R-410A refrigerant to more environmentally friendly alternatives such as R-454B and R-32. This shift has prompted questions and concerns about the fate of existing HVAC systems that rely on R-410A. In this article, we’ll delve into the transition to R-454B and R-32 refrigerants and offer homeowners reassurance that there’s no need to rush into replacing their current R-410A systems or scrambling for refrigerants and parts.

Understanding the Need for Change

R-410A, a widely adopted hydrofluorocarbon (HFC) refrigerant, has long been favored by the HVAC industry for its energy efficiency and cooling prowess. However, its high global warming potential (GWP) has cast a shadow on its environmental footprint, sparking a quest for greener alternatives.

Enter R-454B and R-32, promising replacements that not only deliver enhanced efficiency and cooling capabilities but, crucially, boast significantly lower GWPs. But what does this mean for homeowners already invested in R-410A systems?

Phasing Out R-410A

The transition away from R-410A is motivated by environmental concerns and will unfold as follows:

Ban on New R-410A Systems: While the initial plan aimed for a phase-out by January 1, 2023, several factors have caused a delay. The revised goal primarily targets a ban on refrigerants with a GWP exceeding 750 by 2025, effectively excluding new equipment using R-410A (with a GWP of 2088). This approach mirrors the gradual phase-out of R-22, designed to avoid sudden cost spikes. The price of R-22 remained relatively stable until the complete manufacturing/import ban came into effect in 2020.

R-410A Price Outlook: While R-410A prices are expected to rise, any substantial increases are unlikely to be solely attributed to the phase-out. Inflationary pressures affecting various products play a significant role. Costs have surged due to factors such as rising metal prices affecting refrigerant containers, increased labor expenses, and elevated shipping costs, particularly for imports from countries like China. Shipping rates for refrigerant containers have quadrupled in recent times, though there is hope for price stabilization in the near future.

Equipment Replacement Misconception: Contrary to common misconceptions, you won’t be compelled to replace your HVAC equipment to navigate the evolving landscape. Systems using R-410A will remain serviceable well into the anticipated lifespan of newly purchased R-410A systems. According to the phase-down schedule outlined in the AIM Act (December 27, 2020), the current phase-out of R-410A extends until at least 2037. Given that the typical life expectancy of air conditioners ranges from 10 to 15 years, your recent R-410A system purchase ensures it can be repaired and maintained for years to come.


In summary, the transition from R-410A to R-454B and R-32 refrigerants marks a significant stride towards a more eco-conscious HVAC industry in the United States. Homeowners can breathe easy, knowing there’s no rush to replace or retrofit their existing R-410A systems. The industry is well-prepared for a gradual shift, guaranteeing continued support for these systems. When the time eventually comes for an upgrade, homeowners can opt for environmentally friendly, energy-efficient alternatives. Rest assured, your R-410A system will faithfully deliver reliable cooling for years to come

What Will Replace R-410A?

R-32 and R-454B refrigerants are slated to begin replacing R410A in U.S. HVAC equipment starting 2023. Here’s what you need to know about R-32 and R-454B:


  • Zero Ozone Depletion
  • 1/3 GWP of HFC 410A
  • Superior energy efficiency
  • High refrigeration capacity & thermal conductivity
  • Low pressure drop
  • Single component refrigerant easy to handle and recover
  • Low toxicity

Readily available (R32 is used in the manufacture of R410A which is a blend of 50% R32 & 50% R125

R-32 is currently used with other refrigerant gasses to make R-410a. R-410a is the current refrigerant choice for all manufacturers of HVAC equipment (Until January 1, 2023)

Note: R-32 is technically listed as flammable. Studies have shown, however, that the conditions needed to ignite R-32 are so specific and extremely unlikely to exist and as such it is not something concerning in the vast majority of residential or commercial applications.


  • Higher efficiency for heating than R-32
  • Requires less refrigerant by 5-10% than equipment using R-410a uses
  • R-454B has a lower GWP (Global Warming Potential) at 465-GWP than does R-32 at 675-GWP

The close operating pressures and temperatures of R-454B when compared with R-410a allows manufacturers to build equipment using parameters that are very close to that of equipment that uses R-410a

Note: R-454B is technically listed as flammable much like R-32, although to a lesser degree. Studies have shown, however, that the conditions needed to ignite R-454B are likewise so specific and extremely unlikely to exist and as such it is not something concerning in the vast majority of residential or commercial applications.