For example, according to the U.S. Environmental Protection Agency, HFC-134a, the most common refrigerant used in MVAC systems today, is a "potent greenhouse gas with a global warming potential ...

This refrigerant may only be used in new equipment specifically designed and identified by the EPA for R-290 refrigerant use, and may not be used as a conversion or "retrofit" refrigerant for ...

THE WEEK’S MOST POPULAR CURRENT R&B SONGS ACROSS ALL GENRES, RANKED BY STREAMING ACTIVITY DATA BY ONLINE MUSIC SOURCES TRACKED BY LUMINATE, RADIO AIRPLAY AUDIENCE IMPRESSIONS AS MEASURED BY ...