01
heizen
to heat
To warm a room, building, or water using a heating system in order to reach a comfortable temperature.
example
Im Winter müssen wir das ganze Haus heizen.
In winter, we have to heat the whole house.
heizen
to heat / speed
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Meanings
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Usage tips
Word family
The verb 'heizen' (to heat) belongs to the word family of 'die Heizung' (the heating/heating system). 'Die Heizung' is the system or device you use to heat.
EXAMPLE
Die Heizung ist kaputt, deshalb können wir nicht heizen.
The heating system is broken, so we can't heat the place.
Auxiliary in the perfect tense
The auxiliary verb in the perfect tense depends on the meaning. For 'erwärmen' (to warm/heat), use 'haben'; for 'schnell fahren' (to drive fast), use 'sein' because it is a movement.
EXAMPLE
Wir haben den ganzen Tag nicht geheizt.
We didn't heat the place all day.
Heating with ...
To specify the material or energy source used for heating, use the preposition 'mit' followed by the dative.
EXAMPLE
Viele alte Häuser heizen noch mit Öl.
Many old houses still heat with oil.
Colloquial style
The meaning 'to drive very fast' is colloquial. In formal contexts or written language, you would use 'rasen' (to race/speed) or 'schnell fahren' (to drive fast) instead.
EXAMPLE
Der Motorradfahrer ist laut hupend um die Ecke geheizt.
The motorcyclist sped around the corner, honking loudly.
Compare with
heizen vs kühlen
to cool
'kühlen' and 'heizen' are opposites when it comes to temperature. 'Kühlen' means to make something colder or lower its temperature. 'Heizen' means to make a room, building, or water warmer. So both words are used when changing a temperature, but in opposite directions. For drinks, food, or devices, people often say 'kühlen'. For apartments, rooms, or water heated by a heating system, people say 'heizen'.
heizen
An kalten Tagen heizen die Eltern das Wohnzimmer schon am Morgen.
On cold days, the parents heat the living room early in the morning.
kühlen
Im Sommer kühlen wir die Getränke im Kühlschrank.
In summer, we cool the drinks in the refrigerator.
In real life
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