R-454B is the new low-global-warming-potential refrigerant that replaced R-410A in most residential air conditioners sold in the United States after January 1, 2025. It carries
A correctly sized A/C should run the full cooling load on the hottest summer day while keeping indoor humidity under 55 percent. Here is how Treasure Coast homeowners can sanity-check the tonnage on a contractor’s quote in about 10 minutes – what to look for, what to ask, and when to walk away.