HeyRua Get the app

Heater in Irish (Téitheoir): Meaning, Pronunciation, Usage

The Irish for heater is téitheoir, a masculine noun (plural téitheoirí).
Updated October 2026Report a mistake

How to say “heater” in Irish

Irish:
téitheoir
English:
heater
Word type:
noun
Gender:
masculine, third declension
Pronunciation:
“TAY-hor”  /ˈtʲeːhoːrʲ/
Various forms
Plural:
téitheoirí (heaters)
Genitive singular:
téitheora, an téitheora (e.g. cnaipe an téitheora, the heater's button)
Genitive plural:
téitheoirí, na dtéitheoirí (e.g. cumhacht na dtéitheoirí, the power of the heaters)

What does “téitheoir” mean?

heater
A device that produces heat to warm a room, water or other thing.Also: radiator, warmer, heating appliance.

Other Irish words for heater: radaitheoir (radiator), teasaire (heater)

“Téitheoir” with the article

The plural of heater in Irish is téitheoirí. Here is téitheoir after the article (an t-alt), in the singular and the plural.

an téitheoir
the heater
No change after an
na téitheoirí
the heaters
Plural: no change after na

“Téitheoir” in a sentence: Irish examples

Common Irish sentences using téitheoir, the Irish word for heater.

Tá téitheoir nua againn sa seomra suí.
We have a new heater in the sitting room.
Cas air an téitheoir, tá sé fuar.
Turn on the heater, it's cold.
Bhris plocóid an téitheora inné.
The heater's plug broke yesterday.
Tá dhá théitheoir leictreacha san oifig.
There are two electric heaters in the office.
D'fhág mé mo théitheoir ar siúl ar feadh na hoíche.
I left my heater on all night.
Ná cuir éadaí fliucha ar na téitheoirí.
Don't put wet clothes on the heaters.
Níl aon téitheoir sa charr seo.
There's no heater in this car.

Other nouns in Irish

More everyday Irish nouns to learn next.

Heater in Irish: frequently asked questions

What is the Irish for heater?

The Irish for heater is téitheoir (pronounced “TAY-hor”). It’s a masculine noun and the plural is téitheoirí.

How do you pronounce téitheoir in Irish?

Téitheoir is said like “TAY-hor” (IPA /ˈtʲeːhoːrʲ/).

What is the plural of heater in Irish?

The plural of téitheoir is téitheoirí; with the article, na téitheoirí means “the heaters”. The genitive plural is téitheoirí, as in cumhacht na dtéitheoirí (the power of the heaters).

Why does téitheoir change to théitheoir or dtéitheoir?

Irish changes the start of some words after certain words. After mo (my) téitheoir becomes mo théitheoir (lenition), and after ár (our) or i (in) it becomes ár dtéitheoir (eclipsis).

Is 'téitheoir' the same as 'radaitheoir'?

Not quite: 'téitheoir' is any heater, while 'radaitheoir' is a radiator, such as one in a central heating system.

Learn Irish by
actually speaking it

Learn everyday Irish words like téitheoir through guided conversation with Rua.

7-day free trial. Cancel anytime.

The HeyRua app home screen