verb
to heat
B1
Heizen means 'to heat' or 'to heat up' (also 'to put on the heating'). It's a regular weak verb: Partizip perfekt geheizt, Präsens heizt. Uses auxiliary haben in perfect tenses. Non‑reflexive and not separable. Common for rooms, ovens or systems (die Heizung) and for both transitive and intransitive uses contexts.
Examples
Der Vermieter heizte das ganze Haus, obwohl die Mieter sparsamer sein wollten, und die Rechnung stieg deswegen.
The landlord heated the entire house, although the tenants wanted to be more economical, and the bill rose because of it.
Ich heize das Zimmer.
I'm heating the room.
Ich habe die Heizung angemacht.
I turned on the heating.
Details
Mnemonics
Picture a radiator labeled 'heizen' turning warm and steaming a cold room.
Sounds like 'hay-zen' — imagine hay bales warming a barn to remember 'to heat'.
Notes
Translates as 'to heat' (a room, a building, water in some contexts). Uses the auxiliary 'haben' in perfect tenses (haben + geheizt). Formal imperative (Sie) is not provided here because it requires the pronoun 'Sie' and pronouns are disallowed in conjugation fields.