Are Ash Guardians Daedra?

An Ash Guardian is a summoned Daedra found in The Elder Scrolls V: Dragonborn.

How many ash guardians can you have?

The Conjure Ash Guardian spell is not affected by the Twin Souls perk, meaning you can only have one Ash Guardian out at once.

Is Ash a guardian?

Ash Guardians are atronach-like ash creatures summoned by certain mages on Solstheim. They resemble the Storm Atronach except they are encased in stone rather than lightning. They will attack unless they feed on heart stones. Ash Guardians can be conjured once you have completed the quest From the Ashes.