Electrician using a multimeter to test a wall outlet in a kitchen with tiled walls.
A person in a neon shirt standing on a ledge with a ladder leaning against a building.
Man in a neon shirt standing on a building roof near a ladder.
Person in a bright yellow shirt standing on a rooftop near a ladder, holding a smartphone, next to a multi-story building.
Person fixing electrical wiring on a wall socket
A person in a fluorescent green shirt and gray jacket adjusts their headlamp in a storage room with shelves of boxes and food items.
HVAC technician working on roof air conditioning unit with tools nearby.
Open electrical control panel with wiring and a person's hand resting on top, with a red and black power tool nearby.
Technician repairing rooftop HVAC unit under clear sky
Technician repairing rooftop HVAC unit under cloudy blue sky.
Open electrical control box with wires, capacitors, and circuit board with timer
Close-up of an electrical panel with a Grasslin timer and various wires connected.
Technician repairing an electrical panel with wires inside.
Technician in neon shirt working on outdoor air conditioner unit by house with wooden siding and chain-link fence.
Technician in bright green shirt checking outdoor HVAC unit near a chain-link fence and brown siding.
Two men installing a Lennox furnace in a basement.
Person in a pink shirt wearing a cap and headlamp, arranging bricks on a tray in a workshop setting.
Worker wearing a pink shirt and headlamp kneeling on a concrete floor, with industrial shelves and orange bucket in the background.
Two workers in pink shirts installing a Lennox furnace in a basement.
Two workers in pink shirts installing a Lennox furnace in a basement.
A worker in a pink shirt kneeling beside a furnace unit in a basement, with HVAC equipment and ducts visible.
A technician in a pink shirt and cap is installing or repairing a Lennox furnace in a basement or utility area.
Two construction workers in a room with plastic sheeting, handling metal ductwork, with a ladder and tools nearby.
Two men working indoors with tools; one in a neon green hoodie, the other in glasses, near a ladder and power drill.
Two men in a room working on a project, one in a neon green hoodie and the other in a dark sweater holding a tool.
Construction worker on a ladder installing a drop ceiling.
Person on ladder installing insulation in ceiling of a room under construction with tools on the floor.
Technician working on ceiling wiring in industrial setting
Man standing on a ladder in a construction site, inspecting ceiling wires, with plastic sheeting and building materials nearby.
A construction worker installing ceiling ductwork, wearing a headlamp, in a building with exposed ceiling framework.
Workers installing HVAC ductwork in a construction site.
A man working with a metal sheet in a construction area with a ladder and plastic sheeting in the background.
Man in a black hoodie and cap standing on a ladder indoors, holding safety glasses, with industrial lighting and a stack light in the background.
A person working with HVAC duct insulation in a construction area.
A person wearing jeans and work boots cutting sheet metal with tin snips in a construction setting. A tape measure and pink insulation are visible on the floor, along with a ladder in the background.
A man working on HVAC ducts in a commercial building ceiling.
Person installing HVAC ductwork using a power drill
Worker on a ladder doing ceiling repairs with tools and equipment in a plastic-covered area.
Worker insulating HVAC duct with fiberglass
Man on ladder working on ceiling in room with shelves.
Man in work clothes and cap walking on a rooftop with HVAC units and pipes on a sunny day.
HVAC technician repairing rooftop unit
HVAC technician repairing rooftop air conditioning unit on commercial building
A technician walking on a commercial rooftop with HVAC systems and ventilation units.