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construction site for district heating - tube
Large industrial water treatment and boiler room. Shiny steel metal pipes and blue pumps and valves.
Man adjusting the heating system in a new apartment. Plumber adjusting heat on the central system valves. Service man adjusting house heating system. Underfloor heating system. Man checking pipe
Heating and Cooling Icons HVAC System Symbols.
Air heat pump beside house, 3D illustration

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