Maybe you have a door that sticks, a leaky faucet, or a loose cabinet handle. Who you gonna call? Ghostbusters don’t do home repairs, and they’re far from affordable. And it would be overkill to hire the plumber for something as piddling as a running...
It seems so obvious: a more efficient screw that handles higher torque, reduces slippage, and speeds the manufacturing process. Yet the Phillips screw wasn’t invented until the early 1930s and patented by John P. Thompson of Portland, Oregon, in 1932. The...
HVAC stands for “heating, ventilation, and air conditioning.” HVAC technicians work with central heating and cooling systems, furnaces, boilers, air conditioners, heat pumps, ventilation systems, and commercial refrigeration units. They understand the...
