Can R-410A HVAC Units Still Be Installed After 1/1/26?

Many people have learned that R-410A is being phased out as a go-to refrigerant for HVAC equipment. But what’s less clear is what’s happening to the R-410A equipment itself. In this guide to HVAC refrigerants, we’ll address common questions about installing R-410A equipment and parts. This industry-wide transition is driven by environmental and regulatory goals to replace high-GWP refrigerants with greener alternatives.

Can You Still Install Residential Split System 410A Units After January 1, 2026?

Yes, you’ll still be able to install R-410A units under specific conditions. The Environmental Protection Agency (EPA) has clear guidelines on repairing and replacing individual items vs. replacing an entire system. You will be allowed to repair and replace indefinitely, as long as the materials remain available. Full system installs on pre-existing homes will be limited after 1-1-2026.

However, the EPA is reconsidering this and may change the guidance and allow full system replacement indefinitely as well. Stay tuned to Surplus City, the EPA, and other HVAC news sources for updates. Monitoring upcoming compliance dates is essential to ensuring your installations meet federal refrigerant regulations.

Read the full guide on Can R-410A HVAC Units Still Be Installed After 1/1/26 to understand compliance timelines, installation rules, and what homeowners need to know before upgrading their HVAC system.

That means contractors and property managers can still complete installations of R-410A air conditioners, heat pumps, evaporator coils, compressors, and more—as long as the units were produced before 2025 and meet all building codes, local codes, and EPA regulations. Many installers are opting to stock up while refrigerant supply remains stable and surplus equipment is still available.

What Is a Part, and What Is a System?

A part is something that cannot function on its own, such as an AC condenser, heat pump, compressor, or evaporator coil. Parts combine to form systems. For example, an AC condenser and evaporator coil together constitute a system.

You are allowed to repair and replace parts of existing R-410A systems forever, based on current rules. The EPA is reconsidering restrictions on R-410A full systems and may allow full system R-410A replacement as well. These exceptions help homeowners continue using their existing equipment without needing to commit to premature upgrades.

Can I Install a Split 410A System in 2025?

Yes, R-410A systems can still be installed throughout 2025 in existing homes, as the current installation deadline primarily affects new home construction. Due to extended compliance timelines and low enforcement priority, homeowners and contractors can continue servicing existing equipment, including light commercial air conditioners, heat pumps manufactured before the cutoff, and retail food refrigeration systems.

Starting January 1, 2026, regulations shift to repairing and replacing existing parts only, aligning with updated compliance deadlines. This final transition period creates a strong opportunity to purchase discounted R-410A HVAC equipment from suppliers like Surplus City.

You can still complete projects while maintaining system compatibility with existing systems. To avoid delays and regulatory issues, be sure to track all compliance dates for new and replacement installations.

Contractors can install R-410A split systems, mini splits, or light commercial air conditioners in 2025 without issue—so long as the equipment was manufactured before the EPA refrigerant phase-out date and is not for new construction projects.

What's the Difference Between Split Systems and Package Units?

Making the distinction between R-410A split systems vs. package units matters because of the field assembly rules. Split systems can often be paired with compatible components that were produced before 2025. This gives you flexibility for installations going into 2026. Package units, on the other hand, are complete systems.  

Packaged units have their own deadline in 2028, so you can continue installing R-410A packaged units in R-410A systems for several years to come.

Why R-410A Is Being Phased Out by the Environmental Protection Agency

The R-410A phase-out is part of the EPA’s refrigerant phase-down strategy aimed at reducing greenhouse gas emissions and accelerating the adoption of alternative refrigerants. While R-410A does not harm the ozone layer, its high global warming potential impacts a wide range of applications, including heat pump systems and large-scale environments like cold storage warehouses.

This has caused the industry to move toward more environmentally friendly A2L refrigerants like R-32 and R-454B.

What Are A2L Refrigerants and Are They Mildly Flammable?

A2L refrigerants such as R-32 and R-454B are considered mildly flammable under EPA regulations. However, they are engineered with strict safety features that reduce risk. There are shut-off valves, leak sensors, and other requirements to keep the product safely contained. The good news is that these refrigerants have lower global warming potential. This helps to reduce greenhouse gas emissions without sacrificing cooling performance.

What New Safety Features Do A2L Systems Include?

New HVAC systems using A2L refrigerants are designed with enhanced leak detection sensors, field assembly safeguards, and building code updates. These safety features automatically detect a refrigerant leak and shut off the system if needed.

How Long Is R-410A Going To Be Available?

Despite the R-410A phase-out, R-410A refrigerant availability will continue for many years. The EPA allows for the production and reclamation of refrigerant to service existing systems. That means current HVAC systems using R-410A will remain serviceable well into the foreseeable future.

Will You Be Able To Service R-410A Systems for the Foreseeable Future?

Yes. The EPA refrigerant phase-down targets new equipment, not service refrigerant. R-410A refrigerant will remain available through reclaimed supplies. Technicians will be able to maintain and repair existing systems for the next decade or longer. There’s no need for homeowners or facility managers to rush into buying a replacement. Unless the current system is inefficient or near the end of its lifespan, you should be good to stick with what’s already working for you.

Should You Buy R-410A Equipment Now or Wait for Low GWP Alternatives?

If you’re considering new equipment, this is the ideal time to buy R-410A systems while they’re still in stock. Many distributors are offering deep discounts on HVAC equipment manufactured before the 2025 deadline, providing cost-effective solutions for both residential and light commercial air conditioning projects.

However, if you’re planning for long-term environmental compliance, exploring low GWP refrigerants such as R-32 or R-454B is a smart investment. These new systems will align with changes to HVAC refrigerant regulations of 2025 and help further reduce environmental impact.

In short, R-410A after 2025 will remain available for installation under limited conditions, but the HVAC industry is already preparing for the next generation of low-GWP alternatives to meet future EPA regulations and climate goals. Shop Surplus City to find the parts you need at unbeatable prices!