Types of fan coil units: what they are and how to choose

Fan coil units differ by mounting type, number of pipes and casing design. The right type ensures efficient heating and cooling and blends neatly into the interior. Let’s go through the main types of fan coil units. For the basics, see What is a fan coil unit.

Fan coil types by mounting

This is the primary classification — it determines how the unit is installed and where it fits.

Ducted fan coils (DF)

Concealed above a suspended ceiling, with air supplied and returned through ducts. Completely hidden — only the grilles are visible. → Ducted fan coils DF

Cassette fan coils (CF)

Recessed into a suspended ceiling, distributing air in several directions. Ideal for offices, shops and large open rooms. → Cassette fan coils CF

Wall-mounted fan coils (HWF)

Compact units for wall mounting — a simple solution for individual rooms. → Wall-mounted fan coils HWF

Trench fan coils (FCH, FCHV)

Built into the floor along glazing and left invisible. Indispensable for panoramic windows and storefronts. → Trench fan coils FCH/FCHV

Fan coil types by number of pipes

• 2-pipe — one circuit; heating or cooling at a time. Simpler and cheaper.
• 4-pipe — separate heating and cooling circuits; simultaneous heating and cooling. For large facilities. More in 2-pipe vs 4-pipe fan coil units.

Fan coil types by casing

• With casing — a finished unit with a decorative cover, for exposed installation;
• Without casing (built-in) — installed concealed (above ceilings, in the floor), no cover needed.

How to choose a type

Consider the mounting location (ceiling, wall, floor), the required capacity, the interior (whether concealed mounting is needed), the number of pipes and the noise level (EC fans are quiet). More in How to choose a fan coil unit.

Konveka fan coils

Konveka is a European manufacturer of water-based fan coils and convectors since 2005. The range covers ducted, cassette, wall-mounted and trench fan coils with EC fans, a stainless-steel casing and testing to EN 442 and EN 16430. Browse the range.

Frequently asked questions

What types of fan coil units are there? By mounting — ducted, cassette, wall-mounted and trench; by pipes — 2-pipe and 4-pipe; by casing — with casing and built-in.

What is the difference between a ducted and a cassette fan coil? A ducted unit is fully concealed above the ceiling and works through ducts; a cassette unit is recessed into the ceiling and distributes air in several directions.

Which fan coil suits panoramic windows? A trench unit (FCH/FCHV) — it is built into the floor along the glazing and stays invisible.

Which fan coil is the quietest? Any type with EC fans; for quiet zones choose models with speed control.