Derby Heatbanks

FXLi Range


  • Compact design, with simple controls for ease of use.
  • Requires little or no top up from day energy, resulting in lower annual running costs.
  • Built-in boost element for supplementary heating.
  • High fan speed selectable for faster discharge.
  • Accurate thermostat control of room temperature.
  • Securely wall mountable for safety.
  • Made in the UK.

1. User Controls
Manually adjustable room temperature thermostat. On/Off switch for boost.

2. Installer Set Controls
For commercial applications, installer can permanently select higher fan speed for faster core heat extraction.

1. Case assembly and Weights
Containing assembled heater case and heating elements. Packed in single carton.

2. Storage

Supplied, 2 bricks per pack. Approx weight of each brick 7.5kg.


  • Exceptional user controllability
  • Energy efficient
  • Instantaneous fan controlled heat output, allowing heat on demand
  • 2 speed fan
  • Built in room sensor controlling fan
  • Low case emission, retains heat until required later in the evening
  • Boost element to maintain heat output
  • Separate heat source when required, using boost element
  • WMF heaters can be customised to suit commercial or domestic applications

Download PDF

Download FXL Brochure

Installation Additional Requirements

FXLi Heater

MODEL Weight without Bricks Weight with bricks No. of
FXL 18i 26kg 116kg 12
FXL 24i 32kg 152kg 16

MODEL No. FXL 18i FXL 24i
Height 700mm 700mm
Width 788mm 1016mm
Depth 183mm 183mm
Storage input loading 2.55kW 3.4kW
Direct acting loading 1.5kW 1.5kW
No. of bricks 12 16
Weight 116kg 152kg
Heat Area 26m2 34m2