01
Nov
Do You Need EPA 608 Certification to Buy Refrigerant?
A plain-English guide to EPA Section 608 and 609 certification: who needs it, the four 608 types, and what it means when buying refrigerant.
Refrigerant & HVAC Guides
28
Oct
R-134a vs R-1234yf: The Automotive A/C Refrigerant Guide
R-134a or R-1234yf? Compare the two automotive A/C refrigerants, learn which your vehicle needs, and what to know before you buy.
24
Oct
Best R-22 Replacement Refrigerants: Drop-In Options Explained
R-22 is phased out. Compare the best R-22 replacement refrigerants – R-407C, NU-22B, MO99 and more – and learn how to choose the right retrofit.
20
Oct
R-410A vs R-454B: The 2026 Refrigerant Transition Explained
R-410A is being phased down for lower-GWP A2L refrigerants like R-454B. Here is what is changing in 2025-2026 and what it means when buying refrigerant.
