The Holy Spirit is He. He must not be denigrated as an it of an inferior. Can you see God the Father? do you see God the Son, and do you see God the Holy zspirit? In the iconography of the Orthodox Church, the Three Persons are God are represented as the Three Angels who visited Abraham. These Angels represent the Three divine Persons or Hypostases. Neither of them are an 'IT'. Also, the Trinity is expressed in various forms during the Divine Liturgy of the Orthodox Church, such as, "Holy God, Holy Mighty, Holy Immortal..."
In the Nicene Creed, we recite:
We believe in one God ....
We believe in one Lord, Jesus Christ, the only Son of God, eternally begotten of the Father, God from God, light from light, true God from true God, begotten, not made, of one Being with the Father; through him all things were made...
We believe in the Holy Spirit, the Lord, the giver of life, who proceeds from the Father, who with the Father and the Son is worshiped and glorified,
who has spoken through the prophets.
So, the Holy Spirit is the Lord, not an "it".