Fan-coil wall heaters are thermostatically controlled and use an internal blower to force air over a resistance coil. Since they provide heat through forced air, no fins are needed on the electric element. Wall heaters are available in a number of configurations and sizes to fit various space-heating considerations.
Because these units use large volumes of air as their heating medium, they are not as large as baseboard units of the same heat output, and location is not as critical. Electric wall heaters are easy to install, since wiring is the only connection needed. These units offer the advantage of individually-controlled heating zones throughout the house.
This system can decrease energy use while increasing "comfort". In the past, the major drawback of these units was fan noise. However, many of the new units are quiet enough to use in a bedroom.
Electric wall units contain resistance elements, similar to baseboard heaters, and rely on radiant heat and "natural" convection as well as "forced air". They are generally used for small rooms or areas (i.e. entryways or bathrooms). Wall heaters operate quietly; they distribute heat pretty quickly; and they make zoning a breeze.
Of course there are some disadvantages. Wall units are very visible. Installation can interfere with the wall Insulation and make furniture placement difficult; and less-expensive units can generate some fan noise