IRVINE, Calif. — Navien Inc. has opened sales of its NWP500 Series heat-pump water heaters. NWP500 water heaters are now ready to deliver efficiency, advanced connectivity, and quiet operation in ...

Designed to integrate with the company’s existing roof curbs, the PSS reduces noise transfer through roof-mounted equipment ...

A year later, in May 2023, it became the Affordable Heat Act, or S.5, a bill that set up the clean heat standard for further study but did not implement the program.