Ventilar Present Tense Conjugation in Spanish
The present tense of ventilar — “to ventilate” in English — is the form you need for what happens now, for habits and for general truths. This page gives you the full present conjugation table for ventilar with all six persons, explains exactly how the tense is formed for this verb, shows when to use it with real examples, and finishes with a quiz so you can test yourself. Ventilar means to ventilate, to let fresh air into a room or a building. It is a household and health verb, used with windows, fans and air systems, and it is fully regular. To see it in a real sentence: Ventilo la habitación antes de dormir. — “I ventilate the bedroom before sleeping.” Learn the six forms in the table below, and the present tense of ventilar will be ready for everyday conversation.
Present tense conjugation table: ventilar
Every person of ventilar in the present tense. The gerund is ventilando and the past participle is ventilado.
Present indicative
| Person | Form |
|---|---|
| yo | ventilo |
| tú | ventilas |
| él/ella/Ud. | ventila |
| nosotros/as | ventilamos |
| vosotros/as | ventiláis |
| ellos/ellas/Uds. | ventilan |
How the present indicative of ventilar is formed
The present indicative of ventilar is built from the stem plus the present indicative endings for -ar verbs. Take the infinitive, drop the -ar ending, and add the ending that matches the person. The table below shows the endings, and the full table above shows them attached to the stem.
| Person | Ending | Form |
|---|---|---|
| yo | -o | ventilo |
| tú | -as | ventilas |
| él/ella/Ud. | -a | ventila |
| nosotros/as | -amos | ventilamos |
| vosotros/as | -áis | ventiláis |
| ellos/ellas/Uds. | -an | ventilan |
Ventilar is a regular -ar verb in the present tense, so the table above is completely regular. The stem is ventil- and the endings are the normal -ar endings, so once you know the pattern you can produce every form on this page.
The gerund of ventilar is ventilando and the past participle is ventilado. Both are regular for this verb, and the participle is the form you need for all the perfect tenses with haber.
When to use the present tense of ventilar
The present tense is not one single use — it covers several situations, and ventilar appears in all of them. The five uses below are the ones you will meet most often, each with an example that shows the verb in a natural sentence.
Routines and habits
Use the present for things you do regularly, every day or every week. The present is the tense of routine, and ventilar fits naturally into daily life.
“Yo ventilo la habitación antes de dormir todos los días.” — “I ventilate the bedroom before sleeping every day.”
General facts
Use the present for facts that are true in general, not just today. When you state how something is, the present is the tense to use.
“Él ventila la casa por la mañana.” — “He/she ventilates the house in the morning.”
What is happening right now
Use the present for what is happening at this moment. Spanish often uses the simple present where English uses the progressive, so ventilo can mean both “I ventilate” and “I am ventilateing”.
“Ahora mismo, yo ventilo el aula entre las clases.” — “Right now, I ventilate the classroom between lessons.”
Fixed plans in the near future
Use the present for a plan that is already fixed, such as something arranged for tomorrow. Spanish uses the present for near-future plans much more freely than English does.
“Mañana, yo ventilo con las ventanas abiertas.” — “Tomorrow, I will ventilate with the windows open.”
Questions and negatives
Use the present to ask about habits and to say what does not happen. The question and the negative use exactly the same forms as the statement.
“¿Tú ventilas la habitación antes de dormir?” — “Do you ventilate the bedroom before sleeping?”
The present tense vs the closest tenses
Present — habit or general fact vs Preterite — one finished occasion
The present describes a habit, a routine or a general fact — something that happens again and again or that is true in general. The preterite reports one finished occasion in the past. Use the present when the action repeats or is still true, and the preterite when you are telling what happened once, on a specific day.
- Present — habit or general fact: Ventila la casa por la mañana. — “He/she ventilates the house in the morning.”
- Preterite — one finished occasion: Ventiló la casa por la mañana. — the same idea, placed in the preterite.
Present — now vs Imperfect — a past habit or background
The present talks about now. The imperfect talks about the past as a background — a repeated habit, an ongoing situation, something that used to happen. If you can add “used to” in English, the imperfect is usually the right choice; if it is happening now or always, use the present.
- Present — now: Ventilan el aula entre las clases. — “They ventilate the classroom between lessons.”
- Imperfect — a past habit or background: Ventilaban el aula entre las clases. — the same idea, placed in the imperfect.
Present — now or a fixed plan vs Future — what will happen
The present describes what happens now, what you do regularly, or a plan that is already fixed. The future describes what will happen later — a promise, a prediction, a plan that is not yet under way. Spanish often uses the present for near-future plans, but the future is the form for a clear statement about tomorrow.
- Present — now or a fixed plan: Ventilas con las ventanas abiertas. — “You ventilate with the windows open.”
- Future — what will happen: Ventilarás con las ventanas abiertas. — the same idea, placed in the future.
Examples: ventilar in the present tense
Seven sentences that show ventilar in the present tense only, across all six persons. Read each one aloud, notice the ending, and check the translation.
- Yo ventilo la habitación antes de dormir. — “I ventilate the bedroom before sleeping.”
- Tú ventilas la casa por la mañana. — “You ventilate the house in the morning.”
- Él ventila el aula entre las clases. — “He ventilates the classroom between lessons.”
- Nosotros ventilamos con las ventanas abiertas. — “We ventilate with the windows open.”
- Vosotros ventiláis la habitación antes de dormir. — “You (plural) ventilate the bedroom before sleeping.”
- Ellos ventilan la casa por la mañana. — “They ventilate the house in the morning.”
- ¿Tú ventilas el aula entre las clases? — “Do you ventilate the classroom between lessons?”
Common mistakes with ventilar in the present tense
These are the errors learners actually make with ventilar in the present tense. Each one shows the wrong form, the right form, and why the right form is right.
✗ Yo ventilar la habitación antes de dormir. (using the infinitive instead of a conjugated form).
✓ Correct: Yo ventilo la habitación antes de dormir.
The infinitive is not a conjugated form. With yo, the present tense of ventilar is ventilo, not the infinitive ventilar.
✗ Vosotros ventilais la habitación antes de dormir. (forgetting the accent on the vosotros form).
✓ Correct: Vosotros ventiláis la habitación antes de dormir.
The vosotros present form carries a written accent: ventiláis, not ventilais. The accent marks the stressed vowel, and leaving it out is a spelling mistake.
✗ Ayer, yo ventilo la casa por la mañana. (using the present for a finished past action).
✓ Correct: Ayer, yo ventilé la casa por la mañana.
The present and the preterite are different tenses: ventilo is happening now, while ventilé is a finished action in the past. Use the preterite with ayer.
✗ Treating ventilar and airear as identical in every context. (confusing ventilar with airear).
✓ Correct: Ventilar means to ventilate, while airear means to air out.
They overlap, but each has uses the other does not: ventilar fits sentences such as Ventilo la habitación antes de dormir, while airear belongs in a different sentence. Check the meaning you want before choosing.
Quiz: ventilar in the present tense
Eight questions on the present tense of ventilar. Choose the best answer for each one, then check the answer key below — every answer is explained.
1. Which is the correct present tense form of ventilar for tú?
- a) ventilas
- b) ventilo
- c) ventila
- d) ventilan
2. Complete the sentence: Yo ______ la habitación antes de dormir. — “I ventilate the bedroom before sleeping.”
- a) ventila
- b) ventilamos
- c) ventilas
- d) ventilo
3. Complete the sentence: Él ______ la casa por la mañana. — “He/she ventilates the house in the morning.” (present tense)
- a) ventilaba
- b) ventilará
- c) ventila
- d) ventiló
4. Which is the correct present tense form of ventilar for nosotros?
- a) ventilan
- b) ventilamos
- c) ventilo
- d) ventila
5. Which sentence uses ventilar correctly in the present tense?
- a) Él ventiló la casa por la mañana.
- b) Él ventila la casa por la mañana.
- c) Él ventilará la casa por la mañana.
- d) Ellos ventila la casa por la mañana.
6. Complete the sentence: Ellos ______ el aula entre las clases. — “They ventilate the classroom between lessons.”
- a) ventilo
- b) ventila
- c) ventilamos
- d) ventilan
7. Complete the question: ¿Tú ______ con las ventanas abiertas? — “Do you ventilate with the windows open?”
- a) ventila
- b) ventilarás
- c) ventilas
- d) ventilo
8. What is the gerund of ventilar?
- a) ventilé
- b) ventilando
- c) ventilado
- d) ventilo
Answer key
a) ventilas — The tú form is ventilas. The -s ending belongs to tú in the present; ventilo is yo, ventila is él/ella and ventilan is ellos/ellas.
d) ventilo — The sentence needs the yo form in the present: ventilo. The other options are the wrong person.
c) ventila — The sentence needs the él/ella/Ud. form in the present: ventila. The other options are the preterite, the imperfect and the future.
b) ventilamos — Nosotros takes ventilamos. In the present the nosotros ending for -ar verbs is -amos, attached to the stem.
b) Él ventila la casa por la mañana. — Él ventila la casa por la mañana. is correct: the verb agrees with its subject. The other sentences use the wrong person or the wrong tense.
d) ventilan — The subject is ellos/ellas/Uds., so the present form is ventilan.
c) ventilas — The question needs the tú form in the present: ventilas.
b) ventilando — The gerund is ventilando. It is the form you use with estar for the progressive (estar + gerund), and it is not the past participle ventilado.
Frequently asked questions
Is ventilar regular in the present tense?
Yes. Ventilar is a regular -ar verb in the present tense, so the forms follow the standard endings: ventilo, ventilas, ventila, ventilamos, ventiláis and ventilan.
What is the gerund and the past participle of ventilar?
The gerund is ventilando and the past participle is ventilado. Use the gerund with estar for the progressive, and the participle with haber for the perfect tenses.
How do you say “I ventilate” in Spanish?
Say ventilo. For example: Ventilo la habitación antes de dormir. — “I ventilate the bedroom before sleeping.”
What is the difference between ventilar and airear?
Ventilar means “to ventilate”, while airear means “to air out”. They are related words that learners often meet together, but they are not interchangeable — use ventilar when you mean “to ventilate” and airear when you mean “to air out”. The full conjugation of ventilar is on its own page.
Related links
- Full conjugation of ventilar — every tense and mood, with the complete tables.
- ventilar examples and quiz — more sentences, dialogues and a longer quiz.
- Spanish Present tense guide — how the present tense works for all Spanish verbs.
- Spanish verbs — the full list of Spanish verbs on VerbFlow.
- Airear conjugation — another -ar verb to compare with ventilar.
- Encerar conjugation — another -ar verb to compare with ventilar.
- Cabalgar conjugation — another -ar verb to compare with ventilar.
- Present Tense Conjugator — practise this verb in the interactive tool.
- Spanish Verb Quiz — test yourself on Spanish verbs.