Stagnant, poorly circulated air could foster coronavirus transmission in some indoor spaces. But it can be hard to tell whether a building's heating, ventilation, and air conditioning (HVAC) system is ...

Add Yahoo as a preferred source to see more of our stories on Google. In the months preceding the first known cases of COVID-19 in Wuhan, China, multiple air ventilation systems within the Wuhan ...

MENDENHALL, Pennsylvania (WPVI) -- Right now, restaurants in Chester County are operating at 50% indoor capacity, and many are continuing to make changes to keep the environment as safe as possible.

Gulfstream has signed an agreement with Kronos Air Technologies covering development of a silent air circulation and purification system for business jets. The system, which circulates the cabin air ...

WASHINGTON — Back in April, a federal judge ruled that masks were no longer required for transit and airlines quickly ditched the rule. Now that passengers can fly without wearing a mask there are new ...