This is the 12714th most frequent Russian word.
котельная
Boiler room.
In this sentence, 'котельная' refers to a physical location, specifically the room or facility where boilers are located and operate.
Рабочие установили новое оборудование в котельной.
The workers installed new equipment in the boiler room.
Here, 'котельная' indicates the entire facility that serves as a boiler room, emphasizing its condition as something that can be modernized or improved.
У нас есть планы модернизировать старую котельную.
We have plans to modernize the old boiler room.
In this example, 'котельная' is used to denote the source location of heat generation, emphasizing its function in heating infrastructure.