Rooftop units, which is the full name of RTU, are situated on the roof of small commercial houses and shops to offer air conditioning to the distinct parts. The reason for a rooftop is to ensure the distribution of conditioned air within the distinct parts of the house.

RTU system is linked to ductwork that offers a distinct route for the conditioned air to pass along.

RTU system is a type of air manager; the basic difference is that they usually are extra compressed, and they are mounted on the roof so they should be a bit weatherproof and robust to overcome rain, sun, wind, snow and other weather conditions.


Also, AHU’s will often be linked to the basic plant like the boilers and chillers to offer cooling and heating. On the other hand, RTU’s are self-independent, and they have everything they require all in a single unit. That is the reason why they are known as package air conditioners. There are various types of hvac rtu which includes;

• RTU housing

• RTU air hood

RTU housing

Rooftop unit housing is responsible for protecting all the electrical and mechanical tools inside the unit from being affected by snow, sun, wind, or frost. Access panels will be built into this housing that will let engineers get access to the equipment inside and do maintenance.

RTU air hood


At a particular end, there will generally be an air hood. This is a point where ambient air from outside will be drawn into the device.

The air hood is made in this specific way to stop debris, snow, and water from getting into the unit. There will typically be a mesh located across the air hood unit inlet responsible for preventing objects and wildlife from getting into the unit; since this will result in blockages and destruct the fan.