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Two students work on sweating a joint during a class in AC installation and  repair
Close-up Air conditioner technician hand check  fill refrigerant liquid and maintenance condenser unit, Home care service
Technician Checking Heating System In The Boiler Room With Tablet In Hand
Male workers in factory. male worker  in Industrial chiller HVAC heating ventilation air conditioning system and chiller  in the factory.
Male mechanics with voltage tester working on helicopter engine in hangar.
Truck mechanic is checking safety using digital tablet.
Testing with an anemometer of an axial fan of the condensing unit.
Industry expert monitoring machinery
One senior man teaching his grandson how to repair vehicles  and pass down the business
Fire Fighters
Wind turbine engineer holding the ladder and protected with the lifeline and climbing fall. Security at work concept.
Aircraft engineer in the hangar repairing and maintaining an airplane jet engine.
Young offshore professional engineer checking parameters of working engine in engine room. Offshore engineer making checks on running machinery.
Young Indigenous Navajo Firefighter in the Fire Station in full fire protective gear, turnout, Getting In To Fire Engine in Monument Valley Utah
worker ,engineer check   Fire Suppression System  in model electrical  room.
All machines nead maintains. Professional technician troubleshooting and repair the machines in the printing house.
Man Servicing Outdoor Air Conditioning Unit
HVAC technician monitoring a vacuum gauge after an air conditioning repair
engineer repairs air conditioner
Engineer inspection Industrial fire control system
Latin American mechanic aligning a car tire while working at a garage
Czech firefighters try to extinguish the burning blaze of a forest fire near in the village of Avgaria on the Greek island of Evia, August 10, 2021.
A mature man with a thick beard and large build working as a concrete boom pump operator, walking next to a truck, looking at the camera with a serious expression. This is part of a series showing workers operating concrete pump trucks at a construction site.
Electric motor
Fire Alarm controller, Fire notifier, Anti fire.System ready In the event of a fire. engineer checks the fire safety system
System  engineer with glow green safety jacket holds blueprint drawing at Thermal  Power plant power manufacturing site
male caucasian operator operating industrial printing press
female heating maintenance engineer
Free Images: "bestof:Gas Turbine Systems Technician (Mechanical) Fireman Keith Lovall from Valparaiso, Ind., transits to a simulated class bravo fire during an engineering training"
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