Ariston Clas HE Evo 24kW Combination Boiler & Flue

Item Code: 354920923

£359.00 Ex VAT £430.80 Inc VAT

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Features a new user-friendly interface, improved electrical connections and upgraded control options. At the heart of the CLAS HE evo lies a stainless steel heat exchange for maximum durability

The Advanced 'AUTO' function ensures intelligent management of the room temperature whilst guaranteeing maximum energy efficiency and offering energy savings.

By pressing the 'AUTO' button on the control panel, the boiler will automatically choose the ideal output for the central heating circuit by gradually increasing the power of the boiler until the room reaches the settemperature, whilst guaranteeing no excessive peaks.


  • Supplied with built-in clock and standard horizontal flue
  • SEDBUK A rated
  • 10.3 L/m flow rate @ 35°C
  • Anti-frost and anti-scale device
  • Connection kit and filling loop as standard
  • Auto-diagnostic system & LCD display
  • Unique ‘AUTO’ function optimises efficiency of boiler & system
  • Low NOx, Class 5
  • LPG conversion kit included
  • 5 year manufacturers guarantee


Warranty Period 5 Year Guarantee
Heating Output (kw) 21kw
Weight (kg) 33.5
Width 450mm
Length 360mm
Height 810mm
Use Internal



  • CE
  • KIWA


  1. CS354920923 Ariston-Boiler-Brochure.pdf
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