They'll need a dormant period and wouldn't like your indoor humidity so your house won't work.

Our climates are very different but I'll pass long the recommendation from plantsman Hinkley -
'For those wishing to grow hydrangeas in less benign climates, move a gallon sized plant directly into a 15-25 gal container using a bark-based soilless medium. Move the container into an unheated garage, porch, or greenhouse for the winter season, protecting only during the coldest temperatures. Fertilize and water as for those plants in the ground, replace the growing medium every three years or as needed'