Viceværten hjælper hende, hvis radiatoren ikke virker.

Viceværten is the building caretaker, superintendent, or sometimes janitor of an apartment building. It is a very common Danish housing word.

• vicevært = caretaker/superintendent
• viceværten = the caretaker/superintendent

The -en at the end is the Danish way of saying the.

Because hende is the object form of hun.

• hun = she
• hende = her

In this sentence, the caretaker is doing the action, and her is receiving the action:

• Viceværten hjælper hende = The caretaker helps her

So Danish uses hende here just like English uses her, not she.

Hjælper is the present tense of hjælpe, which means to help.

• at hjælpe = to help
• hjælper = help/helps

Danish verbs do not change for different persons the way English verbs sometimes do. So:

• jeg hjælper = I help
• du hjælper = you help
• hun hjælper = she helps
• de hjælper = they help

The verb form stays the same.

Because radiatoren means the radiator.

In Danish, the definite article is often added to the end of the noun:

• en radiator = a radiator
• radiatoren = the radiator

So instead of using a separate word like English the, Danish often attaches it to the noun.

Here, virker means works or functions.

• Radiatoren virker ikke = The radiator doesn’t work

This is a very common use of virke in Danish when talking about machines, devices, heating, etc.

Be aware that virke can also mean seem/appear in other contexts, but in this sentence it clearly means work/function.

Because Danish word order changes in a subordinate clause.

In a main clause, sentence adverbs like ikke usually come after the finite verb:

• Radiatoren virker ikke = The radiator does not work

But after a subordinating conjunction like hvis (if), Danish normally puts ikke before the finite verb:

• hvis radiatoren ikke virker = if the radiator does not work

This is a very important Danish pattern:

• main clause: verb + ikke
• subordinate clause: ikke
  • verb

Because hvis radiatoren ikke virker is a subordinate clause, and Danish normally puts a comma before subordinate clauses.

So:

• Viceværten hjælper hende, hvis radiatoren ikke virker.

That comma is standard Danish punctuation.

Yes. Even though the verbs are in the present tense, the sentence can describe a general rule, a habitual situation, or a future possibility.

So it can mean something like:

• The caretaker helps her if the radiator isn’t working
• The caretaker will help her if the radiator doesn’t work

Danish often uses the present tense where English might use either present or future, depending on context.

Hvis means if and introduces a condition.

• Viceværten hjælper hende, hvis radiatoren ikke virker.
  = The caretaker helps her if the radiator doesn’t work.

This means the help depends on that condition.

A related word is når, which often means when. Very roughly:

• hvis = if
• når = when

So hvis is used when something is conditional, not certain.

Yes. If the subordinate clause comes first, the main clause gets inversion: the verb comes before the subject.

Original order:

• Viceværten hjælper hende, hvis radiatoren ikke virker.

With the if clause first:

• Hvis radiatoren ikke virker, hjælper viceværten hende.

Notice the change:

• not viceværten hjælper
• but hjælper viceværten

That is normal Danish main-clause word order after an introductory clause.

A rough learner-friendly pronunciation is something like:

• VICE-vair-ten

But that is only approximate.

A few helpful notes:

• v in Danish is usually like English v
• æ is a vowel somewhat like the vowel in cat, but not exactly
• the r affects the vowel sound in Danish more than in English
• -en at the end is the definite ending the

If you want to sound natural, it is best to listen to native audio, because Danish pronunciation is often less phonetic than the spelling suggests.

It is a normal everyday word in Denmark, especially in housing contexts.

You will often see or hear it when talking about:

• apartment buildings
• rental housing
• maintenance problems
• keys, repairs, heating, leaks, and similar issues

So it is a very useful practical vocabulary word for daily life.