One of the greatest innovations of the Okapi Systems is their ability to push the heat out at floor level, because that is the best and most efficient way to heat a room. The heat needs to be stored in the thermal mass of the room (floors, furniture, cushions, pillows, fittings) in order to really keep the room warm. When the heat is blown out at ceiling level, it tends to pool at the ceiling and then conduct outwards through the walls to the outside where it is basically lost and wasted.
Traditionally, solar air heaters always had the heat coming out at ceiling level because they were passive designs using only the action of natural convection to get the heat into the room. Then people started adding fan systems. Except, to get a fan system to turn on automatically and stay on with a simple snap-disc switch system or thermostat control, it is usually hard to set it all up and get it to blow air out at floor level without the single temperature sensor thinking the collector has cooled down.
With a lot of research and specialized programming of a micro-controller chip, the Okapi Systems utilize information from inlet, outlet and ambient room temperature sensors to calculate when the fan should turn on, how fast the fan should run to optimize the heat-transfer to the passing air within the collector, and when the fan should turn off, without leaving any significant amount of heat (that is above the room temperature) left in the collector to be wasted.
This is a technological approach designed to optimize the heating effects within the space you are trying to heat. It truly maximizes your solar air heater's abilities. We are certain you will find that heat coming out near floor-level will definitely heat up your room better and faster.
Check out this video explaining more about thermo-conductivity and how to best heat a room: