Rooftop (RTU)
A rooftop air handling unit that typically combines heating, cooling and ventilation for commercial or institutional zones.
What is a rooftop on a commercial building?
The rooftop combines ventilation, heating and often cooling in a weatherproof outdoor enclosure, with air distribution through ductwork. It is common in retail, offices and schools where the design favors a single central unit and uniform comfort zones.
What are the operating challenges?
Exposure to weather, vibrations and seasonal cycles demands regular attention to filters, economizers, controls and inspections. Preventive maintenance reduces peak-season breakdowns and helps maintain the airflows and heat exchange rates specified in the original design.
How does the rooftop integrate with other systems?
Depending on the building, it may complement a central heat pump, a chiller or recovery strategies like an HRV. Coordination with building controls and fresh air requirements determines comfort, air quality and overall performance.