Garanzia Italiana 24 mesi
SKU: Clas One System 24 Metano

Ariston CLAS ONE SYSTEM Condensing Boiler 24 kW Methane Heating Only Wi-Fi Optional 3301031 Complete with Fume Exhaust Kit

€1.015,00 VAT included
Tax included Shipping calculated at checkout.
Costi di spedizione calcolati in fase di checkout

How shipping works

I costi di spedizione variano a seconda del peso dell'ordine.

Consulta le tabelle con i pesi per l'Italia e per le Isole Minori e Zone Disagiate.

Servizio clienti

Il nostro servizio di assistenza è dedicato a fornire supporto ai nostri clienti per qualsiasi problema o domanda che possano avere prima o dopo l’acquisto dei nostri prodotti.

Utilizza il canale di comunicazione diretta per parlare con un nostro operatore, oppure inviaci una mail ad uno degli indirizzi elencati nella pagina contattaci.

Il nostro team di assistenza clienti è composto da professionisti altamente qualificati e sempre pronti ad aiutare i clienti a risolvere qualsiasi problema o rispondere a qualsiasi domanda in modo rapido ed efficiente. Ci impegniamo a garantire la massima soddisfazione del cliente e a fornire un servizio di assistenza post-vendita di altissima qualità. Quindi, se hai bisogno di assistenza, non esitare a contattarci; saremo lieti di aiutarti in ogni modo possibile.


  • Product code: 3301031
Energy label specifications according to the European ErP directive
  • Class A heating energy efficiency

Combustion and Efficiency:

  • Nominal heat input max/min heating: kW 22.0-3.7
  • Nominal DHW max/min heat output: 26.0-3.7 kW
  • Max/min useful heating power: kW 21.4-3.4
  • Efficiency at nominal heat input (60/80°C): 97.5%
  • Efficiency at 30% (30°C): 109.8%


  • Max/min heating temperature (high temperature) °C 82-35
  • Max/min heating temperature (low temperature) °C 45-20
  • Max/min domestic hot water temperature °C 60-40
  • Minimum operating temperature (-5°C with antifreeze kit)**> 0°


  • Total electrical power absorbed W 77.0
  • Degree of protection of the electrical system IP X5D
  • Dimensions 24 kW mm (HxWxD) 745 x 400 x 315
  • Installation in partially protected places
  • Fuel: methane

ONE series, the new generation of condensing boilers

ONE Series is the new generation of Ariston condensing boilers, designed down to the smallest detail to guarantee maximum performance for a long time.

New XTRATECH™ exchanger: Maximum quality.

XtraTech™ is the new exclusive* Ariston stainless steel exchanger, the heart of ONE condensing boilers, developed to guarantee reliability and performance over time.

Increased passage sections: +142% compared to the previous exchanger. Higher prevalence, lower risk of clogging, more performance. Every day, as if it were the first.

  • Every single component has been designed to guarantee performance and durability over time: Ariston guarantee, shown in every component.
  • Every single component has been rigorously tested and controlled on the production line. 100% of the boilers are retested before being shipped to our customers.
  • The best materials have been selected to work for a long time even in the most critical situations. Excellent results, over time.

Always connected with Ariston NET

Wherever you are, always within reach of your smartphone. Managing the comfort of home has never been so simple! Wherever you are, you can control the climate in your home using your smartphone.

It only uses the energy it needs. Easy to manage weekly time programming, directly from the app. Furthermore, choose the savings "leaf" for a real reduction in bill costs!

Always ON technical support. Thanks to the innovative remote control system, the app alerts your customer in case of operating problems. By signing a maintenance contract, the Assistance Center will be able to intervene in the event of faults even remotely. Customer peace of mind is at the center of Ariston NET.

Absolute efficiency: Thermoregulation in class A+

ONE condensing boilers achieve very high seasonal performance and thanks to thermoregulation they reach class A+ !

Alteas and Genus ONE are also equipped with the innovative IGNITION system, which makes combustion always perfect thanks to electronic control. Gas transformation? No problem, from the technical menu in just one touch.

Total Comfort: Innovative functions to meet your needs

ONE is equipped with an innovative set of smart functions to ensure comfort every day with minimal energy waste.

  • Auto function: Patented function that allows you to automatically optimize the operation of the boiler, eliminating continuous switching on and off and reducing the stress on the components to a minimum.
    Comfort function: Hot water without any waiting! Lots of water with minimal energy consumption.
  • Integrated Programming: Weekly hourly programming integrated into the Alteas and Genus ONE products.
  • Care function: Automatic reminder of routine maintenance.

New Clas One System

Clas ONE system is the condensing boiler with AUTO heating only function.

Available in 24 and 35 kW heating only versions.


  • New XtraTech™ exchanger in exclusive* Ariston stainless steel, with high head
  • Exchanger passage sections +142% compared to the previous version
  • LCD display
  • Class A+ in heating achievable with thermoregulation
  • Modulation ratio 1:7
  • Prepared for Ariston NET connectivity
  • BusBridgeNet® communication protocol
  • AUTO, Comfort function
  • Optimized internal silencer
  • Installation in partially protected places
  • Smoke outlet 80, 60, 50 mm

Product Warranty All products on sale on our site are new and packaged. The warranty on this item is 24 months from the date of purchase.

Scheda Tecnica

  • peso: 35.0 kg
  • classe energetica riscaldamento: A
  • gas: Methane
  • marca: Ariston
  • metri quadri : 120
  • modello: Clas One System 24 Metano
  • potenza in kw: 24
  • potenza nominale: 24
  • superficie riscaldabile mq: 120
View product