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Hydronic Heating Systems

Trench Heating & Fan Convectors

Concealed in floor channels under glazing, or wall-mounted as fan-coil units. The premium solution for floor-to-ceiling glass and architectural builds where you don't want a visible radiator.

Galletti Art-U fan coil heater unit

Trench heaters sit in a recessed floor channel with a decorative grille flush to the floor surface. They're the gold standard for floor-to-ceiling glazing — keeping the glass clear of condensation while preserving the architectural intent.

Fan convectors are the wall-mounted alternative — compact units that combine a finned heat exchanger with a quiet fan, delivering rapid warm-up in spaces that need it.

Where they shine

Trench heaters are specified for: living rooms with floor-to-ceiling glazing, conservatories and orangeries, pool houses, hotel lobbies, anywhere glass-to-floor architecture is desired.

Fan convectors work where wall space is limited but you need heating presence — kitchens, bathrooms, study nooks, hallways.

Key benefits

  • Beats condensation on full-height glazing
  • Walk-on grilles — flush with floor
  • Faster response than radiator panels
  • Quiet — modern units rated below 30dB
  • Pairs with cooling for year-round use
  • Wide range of grille finishes

Featured products & systems

Galletti Art-U Fan Coil

Galletti Art-U Fan Coil

Premium Italian fan-coil unit with sculptural design — slimline wall mount that delivers fast hydronic heating + cooling in a small footprint.

FAQs

Common questions

Why use trench heaters instead of radiators?

Trench heaters are the gold standard for floor-to-ceiling glazing — they prevent condensation on the glass while staying invisible. Perfect for living rooms with large windows, conservatories and architectural builds where wall radiators would interrupt the design.

How deep does the floor channel need to be?

Typical channel depth is 100–150mm. We design the channel into the floor build-up before the slab is poured (new builds) or cut a recess in screed (renovations). Covered with a walk-on grille flush to the floor surface.

Are fan convectors noisy?

Modern fan convectors run below 30dB on low speed — quieter than ambient room noise in most homes. They have multiple fan speeds and automatic cycle control to balance heat output and noise.