Dimplex heater: combination of storage and convector heaters, the CXL/CXLS range

This range of heaters from Dimplex offers many of the benefits of the popular manual and automatic storage Dimplex heaters but with the addition of a built in top-up convector heater which  provides an independent heat source to supplement stored heat in severe weather, or as the sole heating if heat is required unexpectedly – for example in spring or autumn.

The Dimplex CXLS models incorporate the Dimplex Twin Sensor® automatic charging system, ensuring the correct charge is taken regardless of changing weather conditions without the need for user adjustments, and complying with Building Regulations Part L1, which requires all electric storage heaters installed in new build to be fitted with automatic charge controls.

By providing two heaters in one compact case, the Dimplex range of CXL/CXLS saves space, and its smooth curved styling complements XL storage heaters and PLX panel heaters. The top up convector requires its own electrical supply, has full thermostatic control and frost protection facility.

Energy saving features of the Dimplex CXL/CXLS

The Dimplex CXLS heaters range features automatic charge regulator, which automatically adjusts the level of input charge to compensate for changing weather conditions without user intervention.

Dimplex storage and convector heaters features

Provides a continuous source of warmth, primarily from cheap off peak electricity.

  • Convector gives completely silent top-up heating.
  • Convector thermostat can be set to maintain constant room temperatures and automatically switch on as necessary.
  • The CXL Dimplex range storage heater controls and components based on market leading XL range, including reliable manual input control and room temperature boost for optimum use of stored heat.
  • Conveniently positioned convector controls on the front panel.
  • Lower convector loadings selectable on installation.
  • Secure wall fixing for safety.
  • Feet may be fitted under carpet or on top of suitable floor covering.
  • Simple assembly for flexible positioning and quick installation.

Technical specifications

Internal Details – Storage Heater

  1. Storage Core
    Material: High density bonded magnetite bricks.
  2. Heating Element
    Type: Incoloy sheathed in units of 850W.
  3. Thermal Insulation
    Type (a) Front and Rear Panels – microporous silica.
    Type (b) Top and Ends – resin free mineral wool.
    Type (c) Base – calcium silicate slab.
  4. Supply Connection
    Located at front right hand end of base – accessible by removal of front panel assembly. Hidden cable support straps at rear of heater allow neat supply cable connection from either side of heater.
  5. Assembly
    Remove front panel assembly then front inner skin. Remove internal packing containing elements, position rear layer of bricks, heating elements, and front layer of bricks.

Storage Controls

The control knobs are positioned on the sloping rear top panel of the heater, and are therefore out of sight of young children. The knobs incorporate a cross bar and raised pointer for ease of operation.

  1. Charge Controller – CXL
    Type: Bi-metal, adjustable from zero charge to fully charged condition
  2. Charge Controller – CXLS
    Type: Hydraulic close differential room temperature sensing thermostat with external sensor.
  3. Thermal Safety Device
    Type: Bi-metal – manual reset.
  4. Damper Control
    Type: Bi-metal strip, selection variable from early to late or zero boost.

Internal Details – Convector Heater

  1. Element
    Type: Stitched Ribbon.
    Material: Nickel/Chrome/Iron. Element can be de-rated by 50% on installation.
  2. Supply Connection
    Located at front left end of heater base. Cable entry at left hand end. Cable support straps at rear of heater allows neat supply connection from either side of heater.

Convector Controls – Located to right of convector air outlet grille.

  • (A) Room Temperature Thermostat
    Type: Hydraulic, adjustable.
  • (B) Safety Cut-Out
    Type: Bi-metallic, disconnect supply to reset type.
  • (C) ON/OFF Switch
    Type: Single pole incorporating neon which illuminates when switch is in ON position.
  • (D) Neon
    An additional neon illuminates when convector heater is drawing current.
  • (E) Wall fixing bracket
    Please refer to diagram supplied with the heater for wall fixing detail.


Willow White top, sides and front panel. Contrasting Birch Grey grille, rear heat shield and wall spacer.

Construction Details

Galvanised finish sheet steel base, mounted on steel feet, supporting double skin front and outer panels. One piece front panel/grille assembly and front inner skin remove for brick loading.


  1. Case Assembly and Weights
    Containing assembled heater case and heating elements. Packed in single carton.
  2. Storage Bricks
    Supplied, 2 bricks per pack. Approx brick weight 7.5kg each. (See the table for weight of heater with and without bricks).
Model Weight without bricks Weight with bricks No. of bricks
CXL12/CXLS12 19.5kg 77kg 8
CXL18/CXLS18 24kg 111kg 12
CXL24/CXLS24 29.5kg 146kg 16

Shelf – An attractive shelf is available in 3 lengths.

Model CXL12/CXLS12 CXL18/CXLS18 CXL24/CXLS24
Storage Heater performance
Input Rating
1.7kW 2.55kW 3.4k
Charge Acceptance 11.9kWh 17.85kWh 23.8kWh
Convector Heater performance
Maximum Output
900W 1450W 2000W
Other outputs available
(Set on installation)
450W 450W, 1000W 650W, 1350W
Height (A) 706mm 706mm 706mm
Width (B) 565mm 793mm 1021mm
Depth (C) 193mm 193mm 193mm
Height above floor 88mm 88mm 88mm
Installed Weight 77kg 111kg 146kg

You can purchase Dimplex storage and convector heatersthe Dimplex CXL and CXLS series – from our online store, at the Heating and Ventilation section, Heating, Dimplex Heaters. The available models are:

All these models from the Dimplex Storage and Convector Heaters are available for in-store pick-up only, after you have placed an order on our website and we confirm the date when you can come and pick them up. The above article was taken from the official description of the Dimplex heaters, and can be found here.

One comment

  1. I have been asked by the council (for An H M O )to install
    A fan assisted combination storage heater with thermostatically controlled convector heater.with wall mounted electric panel with timer and electronic thermastats

    Is there such an animal and how much and delivery

    thank you

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