Will everything soon go back to normal? Or are we going to permanently change when it comes to working at home, designing our homes and thinking about the air quality at home? 

The use of UL-listed antifreezes helps meet the intent of NFPA freeze protection requirements and the requirement of using an agency-listed antifreeze in both new and existing systems.

The international codes — plumbing, mechanical, fuel gas, building, residential and property maintenance — each contains, in the beginning, administrative provisions.