A hydronic fan coil unit (FCU) is a piece of HVAC equipment designed to heat or cool a space using water as the primary medium for energy transfer. It is commonly used in hydronic HVAC systems for both residential and commercial applications.
How Does a Fan Coil Work?
- Hydronic Heating or Cooling:
- Hot or cold water is generated via an energy source such as a heat pump, boiler, or chiller.
- Heat Exchange Process:
- Heated or chilled water flows to the fan coil unit, and through a heat exchanger (coil) inside the FCU.
- Air is blown through the heat exchanger by a fan. As the air passes over the coil, it is heated or cooled depending on the water’s temperature. In cooling, condensation may form, which is collected and removed via the fan coil’s condensate drain.
- Air Distribution:
- The conditioned air is then distributed into the room, creating a comfortable indoor environment. Fan coil units come in many shapes and sizes, and may be ducted or non-ducted.
Key Features of Hydronic FCUs:
- Energy Efficiency: They use water, which is more efficient for heat transfer than air, reducing energy consumption.
- Zoning Capability: Each unit can be controlled independently, allowing for precise temperature control in different areas.
- Versatility: FCUs can be used for both heating and cooling, making them suitable for year-round comfort.
Paired with advanced controls like those offered by Messana, hydronic FCUs can deliver optimal comfort, better efficiency, and simplified management.
In this video, our Marketing Coordinator, Saul, breaks down the basics of hydronic fan coil units and how Messana’s advanced controls can optimize system performance.