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An Air India pilot asked why the doomed plane’s fuel had been cut off moments before it crashed. A highly anticipated report released by Indian authorities just after midnight on Saturday said ...

Inside the real-world headaches, maintenance procedures, and wins of Variable Refrigerant Flow (VRF)/ technology.

Military right to repair means giving service members the ability to fix their own gear — on base, in the field or downrange — without having to wait on outside contractors.

Live news, investigations, opinion, photos and video by the journalists of The New York Times from more than 150 countries around the world. Subscribe for coverage of U.S. and international news ...

Notice a spike in your energy bill or inconsistent temperatures? These, and more, are signs your HVAC is having issues. Get ...