For secure facility projects, refrigerant transitions are not just an equipment issue. A change in refrigerant can affect piping components, pressure ratings, oil compatibility, and any isolation hardware installed at the secure boundary.
The EPA’s 2026 change to the R-410A installation timeline gives some projects more flexibility, but it also makes it important to confirm exactly which equipment and refrigerant a project is carrying forward.
What the Rule Change Actually Says
In May 2026, the EPA removed the January 1, 2026 installation deadline for eligible residential and light commercial air conditioning and heat pump equipment using refrigerants above the 700 GWP threshold, which includes R-410A. Equipment manufactured or imported before January 1, 2025 can continue to be installed until that inventory is exhausted.
The manufacture and import restrictions for new affected systems remain in place, components for servicing existing systems can still be produced and sold under the applicable rules, and some states maintain their own HFC rules that are stricter than the federal ones. The broader refrigerant transition continues.
Why Secure Facilities Feel This Differently
Secure facility projects can have long design, review, procurement, and construction cycles, so equipment decisions may be made well before installation. The split system specified for a SCIF or secure space may be purchased long before it runs, and the design may be locked even earlier.
When the industry expected a hard stop on R-410A installations, that timeline was a real risk: a project designed around R-410A equipment could reach installation after the deadline had passed.
The rule change relieves that pressure. Pre-2025 R-410A equipment remains installable, which means projects already designed around it can proceed without a forced mid-project switch to a different refrigerant and a redesign of the piping and components that go with it. Because pre-2025 inventory can still be installed, some R-410A projects may continue beyond the original 2026 deadline, and the installed base will need service over its working life.
The Penetration Detail That Follows the Refrigerant
In a secure facility, the refrigerant choice reaches further than the equipment pad. Refrigerant lines that cross the secure perimeter are treated as part of the security boundary, and where the facility’s security authority calls for electrical isolation on those lines, the isolating component sits inside the refrigerant circuit itself.
Any isolation component must match the refrigerant, lubricant, operating pressure, and installation conditions of the actual system. R-410A operates at relatively high pressures, and whether a component can handle high-pressure refrigerant lines is a fair question to put to any manufacturer before the submittal.
Where the selected component is a non-conductive refrigerant line break, its documentation should confirm the refrigerant and lubricant pairing, the pressure rating for the exact line size, and any installation limits, so the submittal and the security review carry the same answer.
Questions for Project Teams to Revisit
For teams with secure facility projects in design or procurement, the rule change suggests a short review:
• Confirm what the project is actually getting: pre-2025 R-410A equipment, or newer equipment on a different refrigerant. The answer drives the piping components, not just the condenser order.
• Check state rules for the project location, since some states kept their own HFC restrictions after the federal change.
• Verify that all refrigerant circuit components are approved for the selected refrigerant and lubricant.
• Plan for serviceability over the system’s expected life, including access to refrigerant, replacement components, and compatible service parts.
The Takeaway
The 2026 rule change gives eligible R-410A projects more installation flexibility, but it does not remove the need for careful equipment and component coordination. Secure facility teams still need to design around the refrigerant that will actually be installed and carry that decision consistently through procurement, submittals, and construction.
