The lawsuit says the law the White House used to enact the tariffs — Section 232 of the Trade Expansion Act — violates constitutional principles.

Turkey is the world’s eighth biggest steel exporter, according to a recent U.S. government report.

Adding humidity to classrooms may help reduce illness among students, a study says. 

The event at the Donald E. Stephens Convention Center will bring architects, engineers and construction contractors together to learn about new technologies and products, officials say.

Winners will be picked by independent ASHRAE members who will judge the products on design, creativity, application and potential market impact.

The contest starts Monday and runs until July 11.

The award honors an HVAC contractor who best represents the association and industry.

Officials with the European Union say it looks increasingly unlikely that they will be able to reach an agreement with the White House to permanently exempt the 28-nation bloc from the steel and aluminum tariffs. 

Hardcast now has a water-based coating for HVAC ductwork that has been in contact with smoke and soot.

Greenheck has redesigned its premium model SP bathroom exhaust fans. The fans are available in six sizes, SP-A50 through SP-A190, and have sound ratings as low as 0.3 sones, company officials said.