Yes, BLOWERS is a Scrabble word!

Letter values in Scrabble US: B 3, L 1, O 1, W 4, E 1, R 1, S 1.

Is it a valid word?

BLOWERS is a valid word in the official Scrabble dictionary (US), the UK Scrabble Dictionary and Words with Friends (ENABLE).

a device that produces a current of air
a fan run by an electric motor
large aquatic carnivorous mammal with fin-like forelimbs no hind limbs, including: whales; dolphins; porpoises; narwhals

Also: electric fan, cetacean mammal.