Hemos de revisar el mobiliario y la salida de emergencia.

Hemos de + infinitive means we have to / we must + verb.

So Hemos de revisar means we have to check/review/inspect.

In this sentence, it expresses obligation or necessity. In Spain, haber de + infinitive is a real structure, although it can sound a bit more formal, written, or administrative than the very common tener que + infinitive.

So:

• Hemos de revisar... = We have to check...
• Very close in meaning to Tenemos que revisar...

Both can express obligation, but they are slightly different in tone.

• Hemos de revisar... → a bit more formal, sometimes more impersonal or official
• Tenemos que revisar... → very common in everyday speech

A native speaker in Spain might say either, but hemos de can sound more like something you might hear in instructions, procedures, reports, or formal conversation.

So the difference is mostly style and register, not basic meaning.

No. This is a very common point of confusion.

• Hemos revisado = we have reviewed / we have checked
  This is the present perfect: haber + past participle

• Hemos de revisar = we have to review / check
  This is haber de + infinitive, which expresses obligation

So even though both start with hemos, they are completely different structures:

• hemos revisado → completed action
• hemos de revisar → obligation / something still to do

Because the structure is haber de + infinitive.

This is a fixed grammatical pattern:

• he de
• has de
• ha de
• hemos de
• habéis de
• han de

Then you add an infinitive:

• Hemos de revisar
• Han de salir
• Has de estudiar

You cannot normally remove the de in this structure.

It can mean to review, but in this sentence it more likely means to check, inspect, or look over carefully.

Revisar is often broader than English review. Depending on context, it can mean:

• to check
• to inspect
• to examine
• to review

With el mobiliario y la salida de emergencia, the most natural meaning is probably inspect/check.

So here it sounds like:

• We have to inspect the furniture and the emergency exit or
• We have to check the furnishings and the emergency exit

Both refer to furniture, but they are not exactly the same.

• el mobiliario = the furnishings / the furniture as a whole
• los muebles = the pieces of furniture

Mobiliario is often a bit more formal or technical. It can sound like the furniture is being considered as a category or as part of an inventory, inspection, or official report.

So:

• revisar el mobiliario sounds natural in formal, administrative, or inspection-style language
• revisar los muebles would focus more on the actual individual items

Because the standard expression is salida de emergencia: emergency exit.

In Spanish, the second noun in a de phrase often stays singular when it describes the type or purpose of something.

Examples:

• gafas de sol = sunglasses
• cepillo de dientes = toothbrush
• salida de emergencia = emergency exit

So de emergencia works like for emergencies / emergency-type. It describes the function of the exit.

Because these are two separate nouns, and each one has its own article:

• el mobiliario
• la salida de emergencia

Spanish often keeps the article with each noun when listing things, especially when the nouns are different in gender or clearly separate items.

You would not normally say:

• el mobiliario y salida de emergencia

That sounds incomplete here. The full, natural form is:

• el mobiliario y la salida de emergencia

Because Spanish often omits subject pronouns when the verb already makes the subject clear.

• Hemos already tells you the subject is we
• So nosotros is not needed

You could say:

• Nosotros hemos de revisar...

But that usually adds emphasis or contrast. In normal Spanish, leaving out nosotros is the natural option.

Yes, it exists and is fully correct in Spain, but it is not always the most everyday option.

In modern spoken Spanish, especially casual conversation, many speakers would more often use:

• tenemos que revisar...

But hemos de revisar... is still natural, especially in:

• formal speech
• written instructions
• official contexts
• careful or slightly elevated style

So a learner should understand it well, even if they personally use tener que more often at first.

Yes. Depending on context, Hemos de revisar... can be translated as:

• We have to review/check...
• We must review/check...

In many cases, English must sounds a bit stronger or more formal, while have to sounds more neutral and everyday. Since hemos de has a somewhat formal feel, must can sometimes fit well.

Still, the best translation depends on tone:

• neutral meaning → we have to
• more formal or directive tone → we must

The sentence breaks down like this:

• Hemos de revisar = verb phrase expressing obligation
• el mobiliario y la salida de emergencia = the two things that must be checked

More specifically:

• Hemos = first person plural present of haber
• de revisar = fixed obligation structure with infinitive
• el mobiliario = direct object 1
• y = and
• la salida de emergencia = direct object 2

So the pattern is basically:

[Obligation phrase] + [thing to be checked] + [and] + [another thing to be checked]