Tu vei porni aspiratorul din dormitor, iar eu voi deschide geamul.

This is the standard Romanian future: an auxiliary + the infinitive of the main verb.

• voi = I will
• vei = you (singular) will

So:

• vei porni = you will start / turn on
• voi deschide = I will open

The full set is:

• voi = I will
• vei = you will
• va = he/she will
• vom = we will
• veți = you all will
• vor = they will

The main verb stays in its infinitive form here: porni, deschide.

Yes. Romanian often drops subject pronouns because the verb form already shows who is doing the action.

So you could also say:

• Vei porni aspiratorul..., iar voi deschide geamul.

In your sentence, tu and eu are there for emphasis and contrast:

• you will do this,
• I will do that.

That fits the meaning of dividing tasks between two people.

Iar is a conjunction. In this sentence it means something like:

• and
• while
• whereas

It often links two parallel ideas with a slight contrast or comparison.

So here:

• Tu vei porni aspiratorul..., iar eu voi deschide geamul.

feels like:

• You will start the vacuum cleaner, and I will open the window.
• or more literally, You will do X, while I will do Y.

It is usually more contrastive than și and less oppositional than dar.

Because Romanian usually puts the definite article at the end of the noun, not before it.

• aspirator = a vacuum cleaner

• aspiratorul = the vacuum cleaner

• geam = glass / windowpane
• geamul = the window / the pane

So -ul here is the masculine/neuter singular definite article.

This is one of the biggest differences from English: instead of a separate word like the, Romanian often adds it to the noun.

Here a porni means to start or to turn on.

With machines and appliances, it often has the sense of:

• start
• switch on
• set going

So vei porni aspiratorul means you will start/turn on the vacuum cleaner.

Good question. Romanian has both:

• fereastră = window
• geam = glass, pane, and very often window in everyday speech

In natural spoken Romanian, people very often say:

• deschide geamul = open the window

even though geam originally refers more literally to the glass/pane.

So in this sentence, geamul is a very normal everyday choice.

This is a useful point, because din usually means from / out of.

So din dormitor can suggest:

• from the bedroom
• or it can describe which vacuum cleaner you mean: the vacuum cleaner from/in the bedroom

In this sentence, a learner might wonder whether din dormitor modifies:

1. the action
   
   • you will start the vacuum cleaner from the bedroom

or

2. the noun
   
   • the vacuum cleaner from/in the bedroom

If you want to clearly say in the bedroom as the location where the action happens, Romanian usually prefers:

• în dormitor

So:

• Tu vei porni aspiratorul în dormitor...

is clearer for You will turn on the vacuum cleaner in the bedroom.

Yes, voi can be confusing because it has two different uses:

1. voi as a pronoun = you all
2. voi as a future auxiliary = I will

In voi deschide, it is the future auxiliary, so it means:

• I will open

You can tell from the structure:

• voi + infinitive = future tense

So when voi is followed by a verb like deschide, porni, merge, etc., it is usually the future marker, not the pronoun you all.

No. It is a very standard and correct future, but Romanian also often uses o să in everyday speech.

For example:

• Tu vei porni aspiratorul
  can also be
• Tu o să pornești aspiratorul

And:

• Eu voi deschide geamul
  can also be
• Eu o să deschid geamul

Very roughly:

• voi / vei / va... + infinitive = standard, clear, neutral
• o să + verb = very common in speech, often a bit more conversational

Both are normal Romanian.

Not completely. Romanian word order is fairly flexible, but the given version is natural and neutral:

• Tu vei porni aspiratorul din dormitor, iar eu voi deschide geamul.

Putting tu and eu near the start helps highlight the contrast between the two people.

You could drop the pronouns:

• Vei porni aspiratorul din dormitor, iar voi deschide geamul.

But the original sounds more explicit and balanced, especially when assigning tasks.