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radiator heater
مشعاع مدفأة
radiador calefactor
رادیاتور بخاری
radiateur chauffage
रेडिएटर हीटर
radiatore radiatore di riscaldamento
ラジエーター ヒーター
grzejnik kaloryfer
radiador aquecedor
radiator încălzitor
радиатор обогреватель
radyatör kalorifer
радіатор опалювач
散热器 暖气片

der  Heizkörper
B2
Estimated CEFR level.
/ˈhaɪt͡skœʁpɐ/

♨️ What exactly is a Heizkörper?

A Heizkörper is a technical component used to transfer heat into a room, thereby warming it up. It's part of a heating system (Heizungsanlage) and is usually filled with hot water or steam, although it can also be electrically powered. The word is masculine, so it's always der Heizkörper.

Typically, you find Heizkörper (radiators) under windows or on walls in apartments, houses, and offices to ensure a comfortable room temperature, especially during the cold months.

Article rules for der, die, and das

Devices mostly masculine.

Caution: das Gerät

Examples: der Akku · der Allradantrieb · der Anrufbeantworter · der Antrieb · der Apparat · der Automat · der ...
⚠️ Exceptions: das Fahrrad · das Flugzeug · das Funkgerät · das Gerät · das Getriebe · das Handy · das Instrument ·...

-er mostly masculine.

1. Caution: many exceptions. 2. almost all -euer nouns are neutral. 3. There are many -er words, we don't list them all.

Examples: der Alzheimer · der Ansprechpartner · der Arbeitgeber · der Arbeitnehmer · der Autofahrer · der Bech...
⚠️ Exceptions: das Barometer · das Münster · das Poker · das Polster · das Poster · das Raster · das Thermometer · das Zepter

🧐 Grammar in Detail: Der Heizkörper

The word "Heizkörper" is a masculine noun. Here is its declension (Deklination):

Singular Declension
CaseArticleNoun
NominativederHeizkörper
GenitivedesHeizkörpers
DativedemHeizkörper
AccusativedenHeizkörper
Plural Declension
CaseArticleNoun
NominativedieHeizkörper
GenitivederHeizkörper
DativedenHeizkörpern
AccusativedieHeizkörper

💡 Examples of Use

  • Der Heizkörper im Wohnzimmer ist sehr warm.
    (The radiator in the living room is very warm.)
  • Kannst du bitte den Heizkörper entlüften?
    (Can you please bleed the radiator?)
  • Die Katze schläft gerne auf dem warmen Heizkörper.
    (The cat likes sleeping on the warm radiator.)
  • Wir müssen die alten Heizkörper austauschen.
    (We have to replace the old radiators.)

🌡️ When and how to use "Heizkörper"?

The term Heizkörper is used in everyday language when talking about heating rooms. It refers to the specific device that emits the heat.

  • In the household: "Der Heizkörper tropft, wir brauchen einen Handwerker." (The radiator is dripping, we need a craftsman/plumber.)
  • When furnishing: "Stell das Sofa nicht direkt vor den Heizkörper." (Don't place the sofa right in front of the radiator.)
  • In a technical context: "Dieser Plattenheizkörper hat eine hohe Effizienz." (This panel radiator has high efficiency.)

Colloquially, people often just say "Heizung" (heating), although "Heizung" actually refers to the entire system (including the boiler, pipes, etc.). "Heizkörper" is more precise for the visible element in the room.

🧠 Mnemonics to Remember

Article Mnemonic: Imagine DER strong janitor using his strong KÖRPER (body) to install the heavy HeizKÖRPER. (Masculine = der).

Meaning Mnemonic: A Heizkörper is a solid KÖRPER (body/object) that HEIZt (heats) the room.

↔️ Similar and Opposite Terms

Synonyms (Similar Meaning):

  • Radiator: Often used synonymously, especially in technical contexts.
  • Heizelement: A more general term for a heating component.
  • Heizung: Colloquially often used for Heizkörper, but actually means the entire heating system.

Antonyms (Opposite Meaning):

  • Kühlkörper: (Heat sink) Dissipates heat to cool something (e.g., in computers).
  • Klimaanlage / Klimagerät: (Air conditioner / AC unit) Primarily used for cooling rooms.

⚠️ Attention: Do not confuse with "Heizkessel" (boiler - the part of the heating system that heats the water) or "Thermostat" (the control valve on the radiator).

😂 A Little Joke

Fragt der eine Heizkörper den anderen: "Ist dir auch so warm?" Sagt der andere: "Nein, ich bin total cool – ich bin nämlich aus!"

Translation: One radiator asks the other: "Are you feeling warm too?" The other replies: "No, I'm totally cool – because I'm turned off!" (A play on words: "cool" means both low temperature and fashionable/relaxed).

✍️ Poem about the Heizkörper

An kalten Tagen, still und starr,
steht er an der Wand, ganz wunderbar.
Der Heizkörper, treu und warm,
schützt uns vor des Winters Harm.
Mit sanftem Glühen, leisem Knacken,
lässt er die Kälte draußen packen.

Translation:
On cold days, silent and rigid,
it stands by the wall, quite wonderful.
The radiator, loyal and warm,
protects us from winter's harm.
With gentle glow, soft cracking sound,
it makes the cold outside be bound.

❓ Little Riddle

Ich habe Rippen, doch kein Fleisch,
ich mache warm, doch bin nicht reich.
Man dreht an mir, wird's draußen kalt,
wer bin ich wohl, sag mir's bald!

Translation:
I have ribs, but have no meat,
I make things warm, but am not rich.
You turn a knob on me when it's cold outside,
Who am I, tell me soon!

Solution: Der Heizkörper (The radiator)

🧩 More Interesting Facts

Word Composition:

The word "Heizkörper" is a compound noun (Kompositum), composed of:

  • heizen: to heat or emit heat.
  • Körper: body, object, or component.

Trivia:

There are many different types of radiators (Arten von Heizkörpern), e.g.:

  • Rippenheizkörper: The classic form with individual fins/ribs.
  • Plattenheizkörper: Modern, flat panel radiators.
  • Konvektoren: (Convectors) Primarily heat the air flowing through them.
  • Fußbodenheizung: (Underfloor heating) Here, the 'radiator' is integrated into the floor.

📝 Summary: is it der, die or das Heizkörper?

The noun "Heizkörper" is masculine. The correct article is always der. There are no other articles for this word. The genitive case is "des Heizkörpers", and the plural form is "die Heizkörper".

🤖

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