Blowing agent transition

Definition

The federally mandated change in what spray polyurethane foam is blown with.

Why It Matters

A technology transitions rule under the federal cooling and refrigerant statute restricts foam products made with substances above a set global warming potential, and it names rigid polyurethane spray foam in its own clause, with the compliance date at the start of 2025 and space and military applications a year behind. It changes the chemical an installer buys and can strand equipment and training. Check what the trucks actually carry and what the crews have been trained on.