Nomen

der Heizkessel

boiler, furnace

Der Heizkessel im Keller ist sehr alt.

The boiler in the basement is very old.

Ein neuer Heizkessel spart viel Energie.

A new furnace saves a lot of energy.

((the boiler/furnace)) + verb 'the boiler/furnace' as a subject The furnace needs to be serviced.

Boiler, Ofen (oven/stove)

From 'heizen' (to heat) + 'Kessel' (kettle, boiler). A boiler for heating a building.

Picture a giant 'kettle' (Kessel) that 'heats' (heizt) the entire house.

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