Ariston Clas HE Evo 24kW System Boiler & Flue

Item Code: 354920925

£349.00 Ex VAT £418.80 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. Plus, thanks to the multi-zone accessory, all ‘evo’ boilers are capable of managing three temperature zones.

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 boileruntil the room reaches the set temperature, whilst guaranteeing no excessive peaks.


  • Supplied with standard horizontal flue
  • SEDBUK A rated
  • 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
  • LPG conversion kit included
  • Low NOx, Class 5
  • Stainless steel heat exchanger
  • 5 year manufacturers guarantee


Warranty Period 5 Year Guarantee
Heating Output (kw) 21.6kw
Weight (kg) 32.5
Width 450mm
Length 360mm
Height 810mm
Use Internal



  • CE
  • KIWA


  1. CS354920925 Ariston-Boiler-Brochure.pdf
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