Moving to 24v system, requires step down for house DC?

Just to clarify, I only run the HW heater off inverter in the afternoon if my batteries are topped up and I can leverage all my spare solar, which is usually the case. Typical overnight usage on batteries draws down to 75% or roughly 150 amp hrs consumption (running residential fridge, TV, Media player, NAS, coffee maker and LPAP), on a typical day I'm back up to 100 by 1 or 2 pm. Saves on LP when I can.