New Ac Refrigerant 2024 Ac. Let’s explore why changes are happening in 2025 and how these. Despite existing for six years at this point, r454b wasn’t accepted as the replacement refrigerant by most manufacturers.

But its introduction is major news in the industry, and it may wind up in your new. Here’s what you need to know about the upcoming 2025 hvac refrigerant change and a2ls to start preparing.