Electric furnaces come in a variety of configurations and are similar to the more common gas-forced air furnaces. Most electric furnaces are multi-flow units (meaning that the same unit can be positioned in a variety of ways: up flow, down flow, or horizontal).
Compared to electric baseboard heating systems, forced-air electric furnaces provide the advantage of a centralized air handling system with air filtration, humidification, and control of air distribution.
The additional installed cost of a central electric furnace system over a zonal heating system is probably justified in only two instances, if you will be:
Filtering the Air, or
Installing a Central Cooling System.