Steve Miles is the general manager of Jerry Kelly Heating and Air Conditioning in St. Louis. He has seen his share of misdiagnosed unitary air conditioners and heat pumps — the company offers free ...

The core of a refrigeration system is the compressor that is designed to pump cool refrigerant gas from the evaporator into the condenser. To accomplish this task, the compressor raises the ...

Applying vibration modelling in gas turbines to fault monitoring of the same equipment can assist maintenance planning and extend system life. Bearings are responsible for vibratory phenomena in gas ...